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Product Information Bulletin Date: 2018-02-02 Bulletin Number: 1000012440-PIB

Revision: 01

EGA BONNET SEALS

Subject:

EGA BOP, BONNET SEAL

Product Model:

ALL EGA BOPs

Effectivity:

ALL EGA BOPs with Bonnet Seal P601013447 Rev. 01

Affected Assemblies:

EGA Bonnet Seal P601013447

Objective To notify all users of EGA BOPs of a change to the BONNET SEAL. (P601013447) Issue Texas Oil Tools was notified that the Bonnet Seal (P601013447) for the EGA BOP was not consistently sealing properly. Through various field reports, it was determined that the seal was on the high side of the hardness range for operations in certain areas of the world. The seal was revised to a softer compound that would work for all operations globally. As TOT had not been notified by any operations, other than those in Alaska, the decision to use the original compound for all other users until stock was depleted was made. Solution Texas Oil Tools is scrapping all P601013447 Revision ‘01’ seals. They are to be replaced with the current revision of ‘02’. Please contact TOT for replacement parts.

1000012440-PIB/Rev 01

Page 1 of 3

Product Information Bulletin DO NOT USE REV 01 SEAL, REPLACE WITH REV 02

USE REV 02 SEAL, CORRECT

1000012440-PIB/Rev 01

Page 2 of 3

Product Information Bulletin Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center.

Texas Oil Tools – US

Marvin Manosca - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 PH# 936 777 6100

NOV Elmar Middle East B-60, Oilfields Supply Center R/A No.9, Jebel Ali, Dubai United Arab Emirates PH# 971 8100 212

Stuart Roberts - UK

Choon Fei Wong- SINGAPORE

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom PH# 44 1493 651801 FAX# 44 1493 651805

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721 Singapore PH# 65 65460928 FAX# 65 65460927

Mark Palka- CANADA Pressure Control Group Manager Rig Solutions – Service and Repair 780 991 9850

Revision History Revision

Date

01

2018-02-02

Change Description (vertical line to the side of a paragraph indicates a change) Initial Release

02

1000012440-PIB/Rev 01

Page 3 of 3

Product Information Bulletin Date: 14 May, 2018 Bulletin Number: 1000012523-PIB

Revision: 03

CLOSING PRESSURE REGARD TO COIL

Subject:

Coiled Tubing BOP Actuator Hydraulic Closing Pressure related to Coil Wall Thickness and Grade Guideline

Product Model:

All TOT BOP Coiled Tubing Models Configured Slip or Pipe Slip

Effectivity:

All BOP’s with Slip or Pipe Slip

Affected Assemblies:

All BOP Assemblies Configured Slip or Pipe Slip

Objective Coiled Tubing advancements in material, yield strength and manufacturing processes continue to be one main area of focus for TOT when developing and sustaining delivered product. Testing numerous combinations of coiled tubing produced is a very challenging task. BOP slip and pipe slip product testing is done onsite in our Lab to determine effects of slip engagement on coil. Hydraulic force applied to an actuator will affect holding capacity and sealing and should be adjusted depending upon coiled tubing being used. Resolution Texas Oil Tools is making the below recommendation when using larger size actuators beginning at 7.00” piston diameter rated to 3,000 psi hydraulic pressure and higher, if applicable. •

Minimum - Maximum hydraulic pressure: ALL CT pipe ODs, with wall thicknesses ranging from 0.109 to 0.165 must adjust the hydraulic pressure to a range = 1,300 psi - 1,500-psi.

•

Minimum - Maximum hydraulic pressure: ALL CT pipe ODs, with wall thicknesses ranging from 0.175 and heavier can leave the normal hydraulic settings on the system = 2,700 psi - 3,000-psi

1000012523-PIB/Rev03

Page 1 of 2

Product Information Bulletin Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center.

Texas Oil Tools – US

Marvin Manosca - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 PH# 936 777 6100

NOV Elmar Middle East B-60, Oilfields Supply Center R/A No.9, Jebel Ali, Dubai United Arab Emirates PH# 971 8100 212

Stuart Roberts - UK

Choon Fei Wong- SINGAPORE

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom PH# 44 1493 651801 FAX# 44 1493 651805

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721 Singapore PH# 65 65460928 FAX# 65 65460927

Mark Palka- CANADA Pressure Control Group Manager Rig Solutions – Service and Repair 780 991 9850

Revision History Revision

Date

01

2018-05-10

Initial Release

02

2018-05-11

Removed Yield

03

2018-05-11

Revise resolution bullet points

1000012523-PIB/Rev03

Change Description

Page 2 of 2

Product Information Bulletin Date: 2018-08-23 Bulletin Number: 1000012661-PIB Revision: 02 RECOMMENDED BONNET BOLT TORQUE

Subject:

TOT recommended bonnet bolt torque per BOP model

Product Model:

All ES, EH, EC, EG, and EGA BOPs.

Effectivity:

All Bonnet Bolts on actuators for ES, EH, EC, EG, and EGA BOPs

Objective

To inform customers of TOT’s recommended torque values for bonnet bolts across all BOP models.

Issue TOT has produced a document with up-to-date recommended torque ranges spaning our BOP models. Reference chart on page 2.

1000012661-PIB/Rev02

Page 1 of 4

Product Information Bulletin

Bop Model

Bonnet Bolting Torque Values Tech Manual Torque (ft.lbs.)

ES34/36 ES44/46 ES54/56 ES64 ES74 EH24 EH34/36 EH44/46 EH54/56 EH64 EH74 EC24 EC34/36 EC44/46 EC54/56 EC74 EK34 EG52 EG54 EGA72

200 200 500 500 500 650 650 2040 1300-1500 1300 700-2040 650 650 2040 325 N/A 650 500 500 1000-1100

100012661-PIB/Rev02

TOT Recommended Torque (ft.lbs.) 200-500 200-500 500-700 500-700 500-700 650-750 650-750 1500-2000 1500-2000 1500-2000 1500-2000 650-750 650-750 1500-2000 1500-2000 1500-2000 650-800 500-700 500-700 1000-1100

Page 2 of 4

Product Information Bulletin

Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center.

Texas Oil Tools – US

Marvin Manosca - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 PH# 936 777 6100

NOV Elmar Middle East B-60, Oilfields Supply Center R/A No.9, Jebel Ali, Dubai United Arab Emirates PH# 971 8100 212

Stuart Roberts - UK

Choon Fei Wong- SINGAPORE

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom PH# 44 1493 651801 FAX# 44 1493 651805

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721 Singapore PH# 65 65460928 FAX# 65 65460927

Mark Palka- CANADA Pressure Control Group Manager Rig Solutions – Service and Repair 780 991 9850

100012661-PIB/Rev02

Page 3 of 4

Product Information Bulletin Revision History Rev 01 02

Date Reason for Issue 2018-08-23 Initial Release N/A 2018-09-07 Revision Add Date/Doc Name in Header; Reformat.

100012661-PIB/Rev02

Prepared TB

Checked KM

Approved JD

CP

TB

KM

Page 4 of 4

Product Improvement Notification Date: 2018-09-12 Bulletin Number: 1000012717-PIN Revision: 01

EIA74 CLEVIS & LOCKING WEDGE Subject:

EIA74 SSR Clevis and Locking Wedge Improvement

Product Model:

Texas Oil Tools EIA74 Series SSR BOP

Effectivity:

EIA74 Series SSR BOP Actuators

Affected Assemblies:

EIA74 Series SSR BOP Actuators

Objective Outline EIA74 SSR product Bill of Material modification to reduce hydraulic pressure required to open actuator set after closing and locking. Issue Field has reported SSR actuators that are unable to function Open utilizing working hydraulic pressure. Investigation TOT conducted a variety of tests, including a 20-cycle test with an accumulator and low volume pump with wellbore pressure being applied at the end of the Close cycles. A modification was made to the overall stroke length of the wedge lock system. Improvements Implemented A 0.5” spacer was implemented in addition to the improvements listed in the 1000012215-PIN Product Improvement Notification. The 1000012215-PIN is still applicable to all EIA74 Actuators, but this PIN is to be considered an addendum to the EIA74 SSR actuators with 8.5” diameter main pistons. All EIA74 GSR actuators with 7.0” diameter pistons are not covered by this PIN. This PIN is only for use on actuators where the 1000012215-PIN has already been implemented and are still unable to function Open using working hydraulic pressure.

Product Improvement Bulletin

Page 2 of 3

The spacer is shown installed on the wedge piston with the revised wedge and clevis design from the 1000012215-PIN Product Improvement Notification.

Image 1 – Spacer installed on EIA74 SSR

Product Improvement Bulletin

Page 3 of 3

Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center, or TOT sales department.

Texas Oil Tools – US

Marvin Manosca - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 PH# 936 777 6100

NOV Elmar Middle East B-60, Oilfields Supply Center R/A No.9, Jebel Ali, Dubai United Arab Emirates PH# 971 8100 212

Stuart Roberts - UK

Choon Fei Wong- SINGAPORE

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom PH# 44 1493 651801 FAX# 44 1493 651805

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721 Singapore PH# 65 65460928 FAX# 65 65460927

Mark Palka- CANADA Pressure Control Group Manager Rig Solutions – Service and Repair 780 991 9850

Product improvement bulletins are intended to inform the customer of available upgrades to existing equipment. To view other product bulletins please sign in to your MYNOV account at https://portal.mynov.com

Product Information Bulletin Date: 14 December, 2018 Bulletin Number: 1000012817-PIB

Revision: 01

SLIP INSERT INSTALLATION

Subject:

Awareness of ram body size specific slip inserts. (4.06 vs. 5.12)

Product Model:

All slip inserts

Effectivity:

Part number specific slip insert to bore specific ram bodies

Affected Assemblies:

All Slip ram assemblies

Objective Issue Texas Oil Tools was made aware of an incident where a slip insert (2000-3044) from a 4.06 ram was installed into a 5.12 ram body (2002-3777B). This resulted in the 4.06 slip insert pinching the coil tubing to the point of fracture and the string was lost downhole. This PIB is to notify customers how this can occur and to make users aware of which slips are designed for which ram bodies. Upon engineering review, it was determined that it is possible to install the 4.06 slip insert 2000-3044B into the 5.12 ram body 2002-3777B. The 4.06 slip insert is not large enough to cover the ram bore of the larger 5.12 BOPs. This could allow for the coil to be off center enough to where the 4.06 slip insert will pinch and possibly shear the coil tubing. When originally conceived the 5.12 slip ram and insert design was based off the 4.06 slip ram and insert, where the insert was made larger to accommodate the larger ram bore to ensure no pinching of the coil tubing if off center. The recess and retention system for the insert remained the same allowing for the possibility of the wrong inserts being installed. Illustrations of the slip inserts are seen in the figures below.

1000012817-PIB/Rev01

Page 1 of 4

Product Information Bulletin Solution To ensure the slip inserts for the 4.06 and 5.12 (or any other slip sizes) do not get mixed up is to confirm the correct part numbers are being used. This can always be located in the accompanying tech manuals, bill of materials, trace sheets, databooks or part number descriptions as well as physical size differences. Each ram body and each slip insert for the 4.06 or 5.12 have their own unique part numbers and assembly numbers for easy identification and differentiation between the parts. Images

Figure 1 - 5.12 ram body 2002-3777B with 4.06 slip Figure 2 – 5.12 ram body 2002-3777B with 5.12 slip insert 2000-3044. INCORRECT SET UP.

insert 9206-2544. CORRECT SET UP

.

1000012817-PIB/Rev01

Page 2 of 4

Product Information Bulletin

Figure 3 – Slip insert comparison. Top: 5.12 slip insert 9206-2520. Bottom: 4.06 slip insert 2000-3044.

1000012817-PIB/Rev01

Page 3 of 4

Product Information Bulletin Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center.

Texas Oil Tools – US

Marvin Manosca - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 PH# 936 777 6100

NOV Elmar Middle East B-60, Oilfields Supply Center R/A No.9, Jebel Ali, Dubai United Arab Emirates PH# 971 8100 212

Stuart Roberts - UK

Choon Fei Wong- SINGAPORE

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom PH# 44 1493 651801 FAX# 44 1493 651805

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721 Singapore PH# 65 65460928 FAX# 65 65460927

Mark Palka- CANADA Pressure Control Group Manager Rig Solutions – Service and Repair 780 991 9850

Revision History Revision

Date (00 Month 0000)

Change Description (vertical line to the side of a paragraph indicates a change)

01 02

1000012817-PIB/Rev01

Page 4 of 4

Product Information Bulletin Date: 14 December, 2018 Bulletin Number: 1000012817-PIB

Revision: 01

SLIP INSERT INSTALLATION

Subject:

Awareness of ram body size specific slip inserts. (4.06 vs. 5.12)

Product Model:

All slip inserts

Effectivity:

Part number specific slip insert to bore specific ram bodies

Affected Assemblies:

All Slip ram assemblies

Objective Issue Texas Oil Tools was made aware of an incident where a slip insert (2000-3044) from a 4.06 ram was installed into a 5.12 ram body (2002-3777B). This resulted in the 4.06 slip insert pinching the coil tubing to the point of fracture and the string was lost downhole. This PIB is to notify customers how this can occur and to make users aware of which slips are designed for which ram bodies. Upon engineering review, it was determined that it is possible to install the 4.06 slip insert 2000-3044B into the 5.12 ram body 2002-3777B. The 4.06 slip insert is not large enough to cover the ram bore of the larger 5.12 BOPs. This could allow for the coil to be off center enough to where the 4.06 slip insert will pinch and possibly shear the coil tubing. When originally conceived the 5.12 slip ram and insert design was based off the 4.06 slip ram and insert, where the insert was made larger to accommodate the larger ram bore to ensure no pinching of the coil tubing if off center. The recess and retention system for the insert remained the same allowing for the possibility of the wrong inserts being installed. Illustrations of the slip inserts are seen in the figures below.

1000012817-PIB/Rev01

Page 1 of 4

Product Information Bulletin Solution To ensure the slip inserts for the 4.06 and 5.12 (or any other slip sizes) do not get mixed up is to confirm the correct part numbers are being used. This can always be located in the accompanying tech manuals, bill of materials, trace sheets, databooks or part number descriptions as well as physical size differences. Each ram body and each slip insert for the 4.06 or 5.12 have their own unique part numbers and assembly numbers for easy identification and differentiation between the parts. Images

Figure 1 - 5.12 ram body 2002-3777B with 4.06 slip Figure 2 – 5.12 ram body 2002-3777B with 5.12 slip insert 2000-3044. INCORRECT SET UP.

insert 9206-2544. CORRECT SET UP

.

1000012817-PIB/Rev01

Page 2 of 4

Product Information Bulletin

Figure 3 – Slip insert comparison. Top: 5.12 slip insert 9206-2520. Bottom: 4.06 slip insert 2000-3044.

1000012817-PIB/Rev01

Page 3 of 4

Product Information Bulletin Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center.

Texas Oil Tools – US

Marvin Manosca - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 PH# 936 777 6100

NOV Elmar Middle East B-60, Oilfields Supply Center R/A No.9, Jebel Ali, Dubai United Arab Emirates PH# 971 8100 212

Stuart Roberts - UK

Choon Fei Wong- SINGAPORE

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom PH# 44 1493 651801 FAX# 44 1493 651805

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721 Singapore PH# 65 65460928 FAX# 65 65460927

Mark Palka- CANADA Pressure Control Group Manager Rig Solutions – Service and Repair 780 991 9850

Revision History Revision

Date (00 Month 0000)

Change Description (vertical line to the side of a paragraph indicates a change)

01 02

1000012817-PIB/Rev01

Page 4 of 4

Product Information Bulletin Date: 24 January, 2019 Bulletin Number: 1000012819-PIB

Revision: 02

SLIP INSERT RETENTION REVISION

Subject:

New method of Slip Retention (top ram body vs. side ram body)

Product Model:

EH, EK, EC & ES BOPS

Effectivity:

Pipe/Slip Ram Assemblies

Affected Assemblies:

All Models - 10K: 3.06” EH, EC, EK & ES; 4.06” EH, EC & ES; 5.12” EH & EC 15K: 3.06” & 4.06” ES

Objective Awareness of new design pipe/slip ram bodies and slip inserts with upper locking screws. This Product Information Bulletin shall also serve as a secondary notice for the Obsoletion of Product Improvement Notice (1000011850-PIN). Description Field failures have been reported regarding slip inserts with the side retention method design. Side loading created by the locking screws each side of the ram and slip insert have resulted in instances where cracking of the slips occur. TOT has tested these slips to 80% of the pipe body yield without cracking; do not exceed 80% of the pipe body yield on slips with side retention screws. During continued use of these slips, monitor with a visual and/or magnetic particle examination after each job (slip areas to inspect referenced on page 4). Solution To correct the issue, TOT is replacing the affected slip inserts (side retention method design only) with new designed slip inserts and upper locking screws. Existing Ram bodies may be reworked to accept the upper retention lock screws. The continued use of original design field proven slips (single retention of the spirolok ring) is acceptable as well.

1000012819-PIB/Rev02

Page 1 of 5

Product Information Bulletin Acceptable Pipe/Slip Ram Assemblies fit for service: Pipe/Slip Ram with Spirolok Ring for Slip Retention (field proven slip inserts, single retention method)

Upper Locking Screws, Secondary Retention Method; TOT Recommended for secondary retention.

1000012819-PIB/Rev02

Page 2 of 5

Product Information Bulletin NON-Preferred Side Retention Pipe/Slip Ram Assemblies: Discontinued Design: Side Locking Screws, Secondary Retention Method. For secondary retention, the slip insert and locking screws will be replaced with the new design utilizing upper locking screws. (referenced previous page). Existing ram bodies may be reworked to accept new upper retention locking screws and new slip inserts.

Non-Preferred Slip Insert Part Numbers / Revision Levels: 8440-6733, 8440-6734, 8440-6735, 8440-6737, 8440-6741, 8440-6742, 8440-6743, 8440-6744, 84406751, 8440-6701; Revision Levels: N, P & R 8440-6761; Revision Levels: F & G 8440-6773; Revision Levels: E & F 8440-6775; Revision Levels: C & D 8440-6779; Revision Level: 02

1000012819-PIB/Rev02

Page 3 of 5

Product Information Bulletin

Side Retention Slip Inspection Area: Area shown in red both sides of slip insert to be visually and/or magnetic particle examined after each job.

1000012819-PIB/Rev02

Page 4 of 5

Product Information Bulletin Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center. Texas Oil Tools – US

Marvin Manosca - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 T: 936 777 6100

ISE - Aftermarket P.O. Box 61490, Plot S 50601 Jebel Ali Free Zone | Dubai, UAE T: +971.4.8016225 M: +971.56.5460115 E: [email protected] Choon Fei Wong - SINGAPORE

Stuart Roberts - UK

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom T: 44 1493 651801 FAX: 44 1493 651805

Singapore T: 65 65460928 FAX: 65 65460927

Wael Semaan - Saudi Arabia Mark Palka - CANADA Pressure Control Group Manager Rig Solutions – Service and Repair T: 780 991 9850

ISE – Aftermarket Road 120/73, Dammam 2nd Industrial City Eastern Province, KSA. T: +966 13 8353061 Ext: 601 M: +966 53 6000859 E: [email protected]

Revision History Revision 01

Date 2018-12-17

02

2019-01-17

1000012819-PIB/Rev02

Change Description Initial Release Added contact information; Add non preferred slip insert part numbers and revs; do not exceed 80% pipe body yield on side retention ram assemblies; Visual and Mag Particle examination after each job.

Page 5 of 5

Product Information Bulletin Date: 24 January, 2019 Bulletin Number: 1000012819-PIB

Revision: 02

SLIP INSERT RETENTION REVISION

Subject:

New method of Slip Retention (top ram body vs. side ram body)

Product Model:

EH, EK, EC & ES BOPS

Effectivity:

Pipe/Slip Ram Assemblies

Affected Assemblies:

All Models - 10K: 3.06” EH, EC, EK & ES; 4.06” EH, EC & ES; 5.12” EH & EC 15K: 3.06” & 4.06” ES

Objective Awareness of new design pipe/slip ram bodies and slip inserts with upper locking screws. This Product Information Bulletin shall also serve as a secondary notice for the Obsoletion of Product Improvement Notice (1000011850-PIN). Description Field failures have been reported regarding slip inserts with the side retention method design. Side loading created by the locking screws each side of the ram and slip insert have resulted in instances where cracking of the slips occur. TOT has tested these slips to 80% of the pipe body yield without cracking; do not exceed 80% of the pipe body yield on slips with side retention screws. During continued use of these slips, monitor with a visual and/or magnetic particle examination after each job (slip areas to inspect referenced on page 4). Solution To correct the issue, TOT is replacing the affected slip inserts (side retention method design only) with new designed slip inserts and upper locking screws. Existing Ram bodies may be reworked to accept the upper retention lock screws. The continued use of original design field proven slips (single retention of the spirolok ring) is acceptable as well.

1000012819-PIB/Rev02

Page 1 of 5

Product Information Bulletin Acceptable Pipe/Slip Ram Assemblies fit for service: Pipe/Slip Ram with Spirolok Ring for Slip Retention (field proven slip inserts, single retention method)

Upper Locking Screws, Secondary Retention Method; TOT Recommended for secondary retention.

1000012819-PIB/Rev02

Page 2 of 5

Product Information Bulletin NON-Preferred Side Retention Pipe/Slip Ram Assemblies: Discontinued Design: Side Locking Screws, Secondary Retention Method. For secondary retention, the slip insert and locking screws will be replaced with the new design utilizing upper locking screws. (referenced previous page). Existing ram bodies may be reworked to accept new upper retention locking screws and new slip inserts.

Non-Preferred Slip Insert Part Numbers / Revision Levels: 8440-6733, 8440-6734, 8440-6735, 8440-6737, 8440-6741, 8440-6742, 8440-6743, 8440-6744, 84406751, 8440-6701; Revision Levels: N, P & R 8440-6761; Revision Levels: F & G 8440-6773; Revision Levels: E & F 8440-6775; Revision Levels: C & D 8440-6779; Revision Level: 02

1000012819-PIB/Rev02

Page 3 of 5

Product Information Bulletin

Side Retention Slip Inspection Area: Area shown in red both sides of slip insert to be visually and/or magnetic particle examined after each job.

1000012819-PIB/Rev02

Page 4 of 5

Product Information Bulletin Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center. Texas Oil Tools – US

Marvin Manosca - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 T: 936 777 6100

ISE - Aftermarket P.O. Box 61490, Plot S 50601 Jebel Ali Free Zone | Dubai, UAE T: +971.4.8016225 M: +971.56.5460115 E: [email protected] Choon Fei Wong - SINGAPORE

Stuart Roberts - UK

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom T: 44 1493 651801 FAX: 44 1493 651805

Singapore T: 65 65460928 FAX: 65 65460927

Wael Semaan - Saudi Arabia Mark Palka - CANADA Pressure Control Group Manager Rig Solutions – Service and Repair T: 780 991 9850

ISE – Aftermarket Road 120/73, Dammam 2nd Industrial City Eastern Province, KSA. T: +966 13 8353061 Ext: 601 M: +966 53 6000859 E: [email protected]

Revision History Revision 01

Date 2018-12-17

02

2019-01-17

1000012819-PIB/Rev02

Change Description Initial Release Added contact information; Add non preferred slip insert part numbers and revs; do not exceed 80% pipe body yield on side retention ram assemblies; Visual and Mag Particle examination after each job.

Page 5 of 5

Product Information Bulletin Date: 2019-03-01 Bulletin Number: 1000012853-PIB

Revision: 04

5.12 8505 SHEAR/SEAL BLADE IMPROVEMENT

Subject:

5.12” Shear/Seal Ram Blade Design Improvement

Product Model:

ES54, ES56, EH54, EH56, EC54 BOP

Effectivity:

Model Specific Ram Assembly Blades

Affected Part:

All 5.12” Shear/Seal Ram Blades; 8505-82**, 8505-81**, 8505-59**B, 850557**B, 8505-59**, 8505-57**

Incident Texas Oil Tools has been notified of incidents involving 5.12” shear seals blades exhibiting signs of cracks in seal areas along the cutting edge post pressure test. The occurrence was typically related to lower temperatures; however, cases were reported related to ambient temperature as well. Description Texas Oil Tools Engineering has performed an analysis on shear seal blades reported with crack like indications and has determined the need to incorporate a lower durometer Viton in order to eliminate a reoccurrence of this issue. Implementation of this change on part numbers 8505-57** and 8505-59** will maintain current operating parameters, 40˚F (4.5˚C) to 350˚F (176.7˚C) with no required changes to Tech Units. Compound implemented has been in use by TOT on other products and has performed as well if not better than the Viton it is replacing. Effective implementation of this change will be noticed on the label attached to the bag the blade comes in with a cure date of March 2019. Additionally, we are introducing another Viton for lower temperature ranges when the need arises. Low Temp Viton designed for a temperature range of -25°F (-31.7˚C) to 250°F (121.1˚C) will be designated as 8505-57**B and 8505-59**B.

Solution 1000012853-PIB/Rev04

Page 1 of 3

Product Information Bulletin Texas Oil Tools will issue new temperature operating guidelines for elastomers used in the 5.12” Shear Seal blade part number series 8505 as reference in the chart below. In the interim TOT is recommending the use of “B” noted shear seal blades as listed below to eliminate the issue as describe in this PIB. Compound Low Temp Nitrile Low Temp Viton Viton

Duro 70 70 80

Temperature Range -50˚F (-45.5˚C) to 250˚F (121.1˚C) -25˚F (-31.7˚C) to 250˚F (121.1˚C) 40˚F (4.5˚C) to 350˚F (176.7˚C)

Part Numbers 8505-82** and 8505-81** 8505-59**B and 8505-57**B 8505-59** and 8505-57** Replace ** with CT size code CT Size Code** ** Coil O.D. Range 44 1.00” thru 1.75” 61 2.00” thru 2.375” 73 2.625” thru 2.875” 88 3.50”

1000012853-PIB/Rev04

Page 2 of 3

Product Information Bulletin Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center. Texas Oil Tools – US

Marvin Manosca - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 T: 936 777 6100

ISE - Aftermarket P.O. Box 61490, Plot S 50601 Jebel Ali Free Zone | Dubai, UAE T: +971.4.8016225 M: +971.56.5460115 E: [email protected] Choon Fei Wong - SINGAPORE

Stuart Roberts - UK

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom T: 44 1493 651801 FAX: 44 1493 651805

Singapore T: 65 65460928 FAX: 65 65460927

Wael Semaan - SAUDI ARABIA Mark Palka – CANADA Pressure Control Group Manager Rig Solutions – Service and Repair

ISE – Aftermarket Road 120/73, Dammam 2nd Industrial City Eastern Province, KSA.

T: 780 991 9850

T: +966 13 8353061 Ext: 601 M: +966 53 6000859 E: [email protected] Revision History Revision 01 02 03 04

Date 2019-01-30 2019-02-01 2019-02-01 2019-03-01

1000012853-PIB/Rev04

Change Description Initial Release Part numbers in chart Part reference Add EC54; Add 3.50”

Page 3 of 3

Product Information Bulletin Date: 07 March 2019 Bulletin Number: 1000012906-PIB Revision: 01 DSA6 STRIPPER PACKER EXTRA SEAL

Subject:

DSA6 Stripper Packer Modified Change Cylinder to Accept Additional Seal

Product Model:

Texas Oil Tools Stripper Packers DSA6

Effectivity:

Stripper Packer

Affected Assemblies:

DSA6-1463Y, DSA6-8463, DSA6-1463, DSA6-D463, DSA6-0463, DSA6-1463YB, DSA6-1463B, DSA6-0463XB, DSA6-1JU6B, DSA6-8463B, DSA6-0463XL, M60DSA6-W565X, DSA6-0463L, DSA6-1465X, DSA6-5463X, DSA6-8465X, M60DSA6-0563, DSA6-8463X, M60DSA6-0463X, DSA6-1463X, M60DSA68463XL, DSA6-8463XB, DSA6-8XG5XL, DSA6-1JU6X, M60DSA6-E463X, M60DSA6-1463XL, M60DSA6-8465XL, DSA6-UK01

Objective To minimize the chance of wellbore pressure compromising the hydraulic circuit. Description In response to a one time isolated incident, Texas Oil Tools has revised the packer change cylinder (9710-1923* Revision F) to accept an additional seal (M601015044) and to add a weep hole. The purpose of this extra seal is to provide an additional barrier in an area of the piston that is not normally exposed to wellbore pressure. Resolution All newly manufactured DSA6 Stripper Packers listed above will have the modified packer change cylinder with extra seal and weep hole. All previously manufactured DSA6 Stripper Packers may be modified to accept the new seal. This will only be done upon request. All seals kits will be capable of use for all DSA6 Stripper Packers, regardless of which packer change cylinder revision is installed.

1000012906-PIB/Rev01

Page 1 of 4

Product Information Bulletin

PIP Seal (M601015044)

Polypak (M601015056)

Weep Hole

Packer Change Cylinder Rev “F” with added PIP Seal & Weep Hole

1000012906-PIB/Rev01

Page 2 of 4

Product Information Bulletin Customers should also refer to previous NOV Product Bulletins for additional information regarding safe operation, maintenance, and inspection criteria by signing in to your MYNOV account at https://portal.mynov.com and then searching with the Product Bulletin Search available below the heading ‘Application Groups’. For information on registering, please visit https://www.nov.com/Search/register.aspx.

Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center if you have any questions regarding this bulletin.

Texas Oil Tools – US Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 T: 936 777 6100

Stuart Roberts - UK Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom T: 44 1493 651801 FAX: 44 1493 651805

Mark Palka - CANADA Pressure Control Group Manager Rig Solutions – Service and Repair T: 780 991 9850

1000012906-PIB/Rev01

Marvin Manosca - DUBAI ISE - Aftermarket P.O. Box 61490, Plot S 50601 Jebel Ali Free Zone | Dubai, UAE T: +971.4.8016225 M: +971.56.5460115 E: [email protected]

Choon Fei Wong - SINGAPORE NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721 Singapore T: 65 65460928 FAX: 65 65460927

Wael Semaan - Saudi Arabia ISE – Aftermarket Road 120/73, Dammam 2nd Industrial City Eastern Province, KSA T: +966 13 8353061 Ext: 601 M: +966 53 6000859 E: [email protected]

Page 3 of 4

Product Information Bulletin Revision History Revision 01

Date 2019-03-07

1000012906-PIB/Rev01

Change Description Initial Release

Page 4 of 4

Product Information Bulletin Date: 11 July 2019 Bulletin Number: 1000014390-PIB

Revision: 03

JIC3 CONNECTOR BOLT TORQUE

Subject:

JIC3 Critical Bolting Torque Requirements

Product Model:

JIC3 Injector Connectors

Effectivity:

Bolting Required Torque, Optional Longer Bolting, Addition of Lock Washers

Affected Assemblies:

All JIC3 Injector Connectors

Objective All bolting listed must adhere to the torque requirements referenced: Torque Specification Bolting Part Numbers

Recommended Torque Value

7935-1408, 7935-1408B, 7935-1408G 7931-1610, 7931-1610B, 7931-2412, 7931-2412B, 79351610, 7935-1610B, 7935-1612, 7935-1612B, 7935-1612G, 7935-1613 7935-2314

300-350 ft.lbs. 500-550 ft.lbs. 700-750 ft.lbs.

Page 1 of 3

Product Information Bulletin Legacy Bolting may be replaced with the optional Bolting part numbers as well as the additional Lock Washer Sets for secondary retention. All bolting must adhere to the torque requirements listed: Recommended

Lock Washer Sets for Optional Bolting

Optional Bolting (longer bolt)

Legacy Bolting Part Numbers

P601015301

7935-1409G

7935-1408, 7935-1408B, 7935-1408G

300-350 ft.lbs.

P601015302 P601015303

7935-1614 7931-2414

7935-1612, 7935-1612B, 7935-1612G

500-550 ft.lbs.

7931-2412, 7931-2412B

500-550 ft.lbs.

Torque Value

Customers should also refer to previous NOV Product Bulletins for additional information regarding safe operation, maintenance, and inspection criteria by signing in to your MYNOV account at https://portal.mynov.com and then searching with the Product Bulletin Search available below the heading ‘Application Groups’. For information on registering, please visit https://www.nov.com/Search/register.aspx. Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center if you have any questions regarding this bulletin. UNITED STATES: TOT Texas Oil Tools 3770 Pollok Dr. Conroe, TX 77303 T: 936 777 6100

DUBAI: ISE Aftermarket ISE Aftermarket P.O. Box 61490, Plot S 50601 Jebel Ali Free Zone | Dubai, UAE T: +971.4.8016225

UNITED KINGDOM: Hydra Rig Hydra Rig, Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom T: 44 1493 651801

SINGAPORE: NOV Elmar NOV Elmar PTE LTD #129 No. 7 Loyang Way 508721 Singapore T: 65 65460928

CANADA: PCG Pressure Control Group Rig Solutions – Service and Repair T: 780 991 9850

SAUDI ARABIA: ISE Aftermarket Road 120/73, Dammam 2nd Industrial City Eastern Province, KSA T: +966 13 8353061 Ext: 601

1000014390-PIB/Rev 03

Page 2 of 3

Product Information Bulletin Revision History Revision Date 01 2019-05-31 02 2019-06-24 03

2019-07-11

1000014390-PIB/Rev 03

Change Description Initial Release Change part number 7935-1048 to 7935-1408 Add additional chart referencing optional longer bolting, lock washer sets; revised subject and effectivity

Page 3 of 3

Product Information Bulletin Date: 12 August 2019 Bulletin Number: 1000033495-PIB

Revision: 02

ET SAFETYHEAD INDICATOR HOUSING

Subject:

Indicator Housing Assembly New Design

Product Model:

All ET Safetyhead

Effectivity:

Indicator Housing New Design vs. Legacy Design

Affected Assemblies:

All ET Safteyhead Assemblies

Objective Texas Oil Tools has simplified the design of the tail rod indicator housing assembly. The M1N1000452 indicator is the preferred design and all new builds will utilize this new part in place of the legacy indicator housing assembly. New design vs. legacy design may be visually referenced in figures 1 & 2. Ram closed position is determined by the wedge indicator being in the Locked position, whereas ram open position is determined by the Exposed tail rod. This is referenced in figures 3 & 4.

Page 1 of 5

Product Information Bulletin Figure 1: M1N1000452 – New Simplified Design Indicator Housing

Figure 2: 2006-8040 – Legacy Indicator Housing

1000033495-PIB/Rev 02

Page 2 of 5

Product Information Bulletin

Figure 3: Rams Closed, indicated by Wedge Lock in “Lock” Position.

Figure 4: Rams Open, indicated by Tail Rod in “Extended” Position (flush to end of indicator housing).

1000033495-PIB/Rev 02

Page 3 of 5

Product Information Bulletin

Customers should also refer to previous NOV Product Bulletins for additional information regarding safe operation, maintenance, and inspection criteria by signing in to your MYNOV account at https://portal.mynov.com and then searching with the Product Bulletin Search available below the heading ‘Application Groups’. For information on registering, please visit https://www.nov.com/Search/register.aspx.

Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center if you have any questions regarding this bulletin.

UNITED STATES: TOT Texas Oil Tools 3770 Pollok Dr. Conroe, TX 77303 T: 936 777 6100

DUBAI: ISE Aftermarket ISE Aftermarket P.O. Box 61490, Plot S 50601 Jebel Ali Free Zone | Dubai, UAE T: +971.4.8016225

UNITED KINGDOM: Hydra Rig Hydra Rig, Excalibur Road Beacon Park Gorleston Great Yarmouth Norfolk England, United Kingdom T: 44 1493 666200

SINGAPORE: NOV Elmar NOV Elmar PTE LTD #129 No. 7 Loyang Way 508721 Singapore T: 65 65460928

CANADA: PCG Pressure Control Group Rig Solutions – Service and Repair T: 780 991 9850

SAUDI ARABIA: ISE Aftermarket Road 120/73, Dammam 2nd Industrial City Eastern Province, KSA T: +966 13 8353061 Ext: 601

1000033495-PIB/Rev 02

Page 4 of 5

Product Information Bulletin Revision History Revision Date 01 2019-08-06 02 2019-08-12

1000033495-PIB/Rev 02

Change Description Initial Release Update Tail Rod positions; add flush to end of indicator housing – figure 4

Page 5 of 5

Product Information Bulletin Date: 12 August 2019 Bulletin Number: 1000033496-PIB

Revision: 01

EIA SUBSEA ACTUATOR INDICATOR HOUSING

Subject:

Indicator Housing Assembly New Design

Product Model:

Subsea EIA Actuators

Effectivity:

Indicator Housing New Design vs. Legacy Design

Affected Assemblies:

All EIA Subsea Actuator Assemblies

Objective Texas Oil Tools has simplified the design of the tail rod indicator housing assembly. The M1N1000366 indicator is the preferred design and all new builds will utilize this new part in place of the legacy indicator housing assembly. New design vs. legacy design may be visually referenced in figures 1 & 2. Ram closed position is determined by the wedge indicator being in the Locked position, whereas ram open position is determined by the Exposed tail rod. This is referenced in figures 3 & 4.

Page 1 of 5

Product Information Bulletin Figure 1: M1N1000366 – New Simplified Design Indicator Housing

Figure 2: M601009953B – Legacy Indicator Housing

1000033496-PIB/Rev 01

Page 2 of 5

Product Information Bulletin Figure 3: Rams Closed, indicated by Wedge Lock in “Lock” Position.

Figure 4: Rams Open, indicated by Tail Rod in “Extended” Position (flush to end of indicator housing).

1000033496-PIB/Rev 01

Page 3 of 5

Product Information Bulletin

Customers should also refer to previous NOV Product Bulletins for additional information regarding safe operation, maintenance, and inspection criteria by signing in to your MYNOV account at https://portal.mynov.com and then searching with the Product Bulletin Search available below the heading ‘Application Groups’. For information on registering, please visit https://www.nov.com/Search/register.aspx.

Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center if you have any questions regarding this bulletin.

UNITED STATES: TOT Texas Oil Tools 3770 Pollok Dr. Conroe, TX 77303 T: 936 777 6100

DUBAI: ISE Aftermarket ISE Aftermarket P.O. Box 61490, Plot S 50601 Jebel Ali Free Zone | Dubai, UAE T: +971.4.8016225

UNITED KINGDOM: Hydra Rig Hydra Rig, Excalibur Road Beacon Park Gorleston Great Yarmouth Norfolk England, United Kingdom T: 44 1493 666200

SINGAPORE: NOV Elmar NOV Elmar PTE LTD #129 No. 7 Loyang Way 508721 Singapore T: 65 65460928

CANADA: PCG Pressure Control Group Rig Solutions – Service and Repair T: 780 991 9850

SAUDI ARABIA: ISE Aftermarket Road 120/73, Dammam 2nd Industrial City Eastern Province, KSA T: +966 13 8353061 Ext: 601

1000033496-PIB/Rev 01

Page 4 of 5

Product Information Bulletin Revision History Revision Date 01 2019-08-12

1000033496-PIB/Rev 01

Change Description Initial Release

Page 5 of 5

Product Information Bulletin Date: 05 February 2020 Bulletin Number: 1000033622-PIB

Revision: 01

EIA Series BOP

Subject:

EIA Lock Piston Polypak Spacer

Product Model:

EIA Series BOP

Effectivity:

All EIA Series BOP Actuators

Affected Assemblies:

All EIA Series BOP Actuators

Objective Outline EIA product Bill of Material modification to reduce free space between lock piston Polypak rod seals in seal carrier. Issue Field has reported accelerated wear to Polypak rod seals in seal carriers. Investigation Customer reported accelerated wear to Polypak rod seal while cycling actuator. It was discovered that the damage could be caused by the seals “rolling” within the additional space between the two rod seals in the seal carriers. TOT has performed a series of cyclical loading tests using the spacer M1N1000655 between seals P607821-1182J. The seal arrangement was tested and qualified per API 6A Annex F PR2. Testing included 200 cycles, hydraulically closed with 5,000 psi, and hydraulically opened with 5,000 psi. [Reference D1N1000658-REP-001 for testing details]

Page 1 of 6

Product Information Bulletin Recommendations This arrangement is considered a product improvement for the EIA series actuators. TOT recommends the addition of the spacer, but it is not required as the original seal arrangement, with no spacer, was tested and qualified per API 6A Annex F PR2. Also, TOT recommends that the Polypak seals are to be replaced when the spacer (M1N1000655) is being added to the system.

The spacer has been added to take up the space between the two seals and prevent any “rolling” that might occur. Figure 1: Seal/Spacer Layout

1000033622-PIB/Rev 01

Page 2 of 6

Product Information Bulletin Figure 2: Polypak Energizer Direction in relation to Spacer

Figure 3: Seals/Spacer Qualification Photos

1000033622-PIB/Rev 01

Page 3 of 6

Product Information Bulletin

1000033622-PIB/Rev 01

Page 4 of 6

Product Information Bulletin Customers should also refer to previous NOV Product Bulletins for additional information regarding safe operation, maintenance, and inspection criteria by signing in to your MYNOV account at https://portal.mynov.com and then searching with the Product Bulletin Search available below the heading ‘Application Groups’. For information on registering, please visit https://www.nov.com/Search/register.aspx.

Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center if you have any questions regarding this bulletin.

UNITED STATES: TOT Texas Oil Tools 3770 Pollok Dr. Conroe, TX 77303 T: 936 777 6100

DUBAI: ISE Aftermarket ISE Aftermarket P.O. Box 61490, Plot S 50601 Jebel Ali Free Zone | Dubai, UAE T: +971.4.8016225

UNITED KINGDOM: Hydra Rig Hydra Rig, Excalibur Road Beacon Park Gorleston Great Yarmouth Norfolk England, United Kingdom T: 44 1493 666200

SINGAPORE: NOV Elmar NOV Elmar PTE LTD #129 No. 7 Loyang Way 508721 Singapore T: 65 65460928

CANADA: PCG Pressure Control Group Rig Solutions – Service and Repair T: 780 991 9850

SAUDI ARABIA: ISE Aftermarket Road 120/73, Dammam 2nd Industrial City Eastern Province, KSA T: +966 13 8353061 Ext: 601

1000033622-PIB/Rev 01

Page 5 of 6

Product Information Bulletin Revision History Revision Date 01 2020-02-05

1000033622-PIB/Rev 01

Change Description Initial Release

Page 6 of 6

Product Information Bulletin Date: 18 May 2020 Bulletin Number: 1000033701-PIB

Revision: 01

LUBRICATOR, RISER INCORRECT TAG

Subject:

API 6A spools: Incorrectly marked tags

Product Model:

Lubricator and Risers

Effectivity:

Lubricators and Risers marked PR1 or PR2

Affected Assemblies:

TOT Lubricators and Risers manufactured November 2019 to May 2020

Issue TOT sent out incorrectly stamped Tags on some API 6A spools. Action If a Tag on a Lubricator or Riser references a 1 or 2 in the PR section, mark it out and replace with N/A. This applies to all API 6A spools shipped starting November of 2019. If you find a tag that is marked either PR1 or PR2 for an API 6A spool and are unsure of the aforementioned, please contact Texas Oils Tools for clarification. Serial Numbers Affected: 194-52686 194-52690 194-52691 194-52692 194-52693 194-52694 194-52695 194-52696 194-52697 194-52698 194-52699 194-52700 194-52701 194-52702 194-52703 194-52704

194-52705 194-52781 194-52782 194-52783 194-52784 194-52785 194-52786 194-52787 194-52788 194-52789 194-52790 194-52791 194-52792 194-52767 194-52768 194-52769

194-52770 201-52934 201-53158 201-53159 201-53160 201-53161 201-53162 201-53163 201-53164 201-53165 201-53166 201-53167 201-53168 201-53260 201-53261 201-53262

201-53263 201-53264 201-53265 201-53266 201-53267 201-53269 201-53270 201-53271 201-53272 201-53273 201-53274 201-53274 201-53275 201-53276 201-53277 201-53278

201-53279 201-53280 201-53281 201-53282 201-53283 201-53284 201-53285 201-53286 201-53287 201-53288 201-53289 201-53290 201-53291 201-53292 201-53293 201-53294

201-53295 201-53296 201-53297 201-53298 201-53299 201-53300 201-53301 201-53302 201-53303 201-53218

Page 1 of 3

Product Information Bulletin

Customers should also refer to previous NOV Product Bulletins for additional information regarding safe operation, maintenance, and inspection criteria by signing in to your MYNOV account at https://portal.mynov.com and then searching with the Product Bulletin Search available below the heading ‘Application Groups’. For information on registering, please visit https://www.nov.com/Search/register.aspx.

Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center if you have any questions regarding this bulletin.

UNITED STATES: TOT Texas Oil Tools 3770 Pollok Dr. Conroe, TX 77303 T: 936 777 6100

DUBAI: ISE Aftermarket ISE Aftermarket P.O. Box 61490, Plot S 50601 Jebel Ali Free Zone | Dubai, UAE T: +971.4.8016225

UNITED KINGDOM: Hydra Rig Hydra Rig, Excalibur Road Beacon Park Gorleston Great Yarmouth Norfolk England, United Kingdom T: 44 1493 666200

SINGAPORE: NOV Elmar NOV Elmar PTE LTD #129 No. 7 Loyang Way 508721 Singapore T: 65 65460928

CANADA: PCG Pressure Control Group Rig Solutions – Service and Repair T: 780 991 9850

SAUDI ARABIA: ISE Aftermarket Road 120/73, Dammam 2nd Industrial City Eastern Province, KSA T: +966 13 8353061 Ext: 601

1000033701-PIB/Rev 01

Page 2 of 3

Product Information Bulletin Revision History Revision Date 01 2020-05-15

1000033701-PIB/Rev 01

Change Description Initial Release

Page 3 of 3

Product Information Bulletin Date: 2 June 2020 Bulletin Number: 1000033710-PIB

Revision: 01

EGA RAM TOP SEAL & BLADE SEAL INSTALLATION

Subject:

Proper installation of Top Seal and Blade Seal in EGA Ram Assemblies

Product Model:

ALL EGA BOPs

Effectivity:

Top Seal: M601013282M, Blade Seal: 2005-2015

Affected Assemblies:

ALL EGA SHEAR SEAL RAM ASSEMBLIES

Objective To notify all users of EGA BOP’s top seals and blade seal installation to improve product seal life. Issue Improper install of top seals and blade seal on M60EGA72-N72S caused premature wear. An incident reported the top seals and blade seal had significant wear after minimal function tests and pressure tests. The top seal and blade seal held pressure and functioned properly, but had to be removed upon inspection. The inspection showed significant wear to the top seal and blade seal as seen in the pictures below. Solution TOT recommends that installation of seals be performed with the most updated version of EGA tech manuals. Ram assembly manual D601015010-MAN-001 was created to clarify in detailed instructions, the proper installation of EGA top seals and blade seal. EGA tech manuals have been revised to incorporate updated ram installation procedure described in D601015010-MAN-001.

Page 1 of 4

Product Information Bulletin Figure 1. – Blade Seal showing extensive wear and tear with little use and function.

Figure 2. – Top Seal metal to rubber bonding not joined with abnormal damage on brass.

1000033710-PIB/Rev 01

Page 2 of 4

Product Information Bulletin Customers should also refer to previous NOV Product Bulletins for additional information regarding safe operation, maintenance, and inspection criteria by signing in to your MYNOV account at https://portal.mynov.com and then searching with the Product Bulletin Search available below the heading ‘Application Groups’. For information on registering, please visit https://www.nov.com/Search/register.aspx.

Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center if you have any questions regarding this bulletin.

UNITED STATES: TOT Texas Oil Tools 3770 Pollok Dr. Conroe, TX 77303 T: 936 777 6100

DUBAI: ISE Aftermarket ISE Aftermarket P.O. Box 61490, Plot S 50601 Jebel Ali Free Zone | Dubai, UAE T: +971.4.8016225

UNITED KINGDOM: Hydra Rig Hydra Rig, Excalibur Road Beacon Park Gorleston Great Yarmouth Norfolk England, United Kingdom T: 44 1493 666200

SINGAPORE: NOV Elmar NOV Elmar PTE LTD #129 No. 7 Loyang Way 508721 Singapore T: 65 65460928

CANADA: PCG Pressure Control Group Rig Solutions – Service and Repair T: 780 991 9850

SAUDI ARABIA: ISE Aftermarket Road 120/73, Dammam 2nd Industrial City Eastern Province, KSA T: +966 13 8353061 Ext: 601

1000033710-PIB/Rev 01

Page 3 of 4

Product Information Bulletin Revision History Revision Date 01 2020-06-02

1000033710-PIB/Rev 01

Change Description Initial Release

Page 4 of 4

PRODUCT SERVICE BULLETINS Index

NOV TEXAS OIL TOOLS INDEX OF PRODUCT BULLETINS

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 T: 936.777.6100

Document Number

Rev

D601005758-IDX-001

52

This document contains proprietary and confidential information which belongs to National Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as “NOV”). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV. ©National Oilwell Varco

D601005758-IDX-001 Revision 52

NOV TEXAS OIL TOOLS PRODUCT BULLETINS BULLETIN NUMBER SUBJECT ISSUE DATE PSB-014-PIB 5” JHS CONNECTOR 1993-05 EFFECTIVITY: All 5” JHS Connectors: Modification to Seal Retainer PSB-028-PIB 4.06 10K & 15K QUAD SLIP 1995-10 EFFECTIVITY: Slip Rams purchased Jan to Oct. 1995; Part nos. 9206-2335 thru 9206-2573; Slip Insert drill & pin mod PSB-035-PIB 2.50 TANDEM SIDEDOOR S/P 1996-09 EFFECTIVITY: All 2.50” Tandem Side Door Strippers; Step Ring 9101-2926 to 9628-2120 PSB-029-PIB 3.06 COMBI BOP GUIDE PINS 1996-10 EFFECTIVITY: All 3.06” Combi BOP; Guide Pin Rev C PSB-032-PIB DTS4 & DTS6 SIDEWINDER S/P 1997-01 EFFECTIVITY: All DST Sidewinder Strippers; Excessive Packer & Bushing wear; Re-designed Packer and Energizer PSB-036-PIB ALL 3.06 EL WIRELINE BOP 1997-05 EFFECTIVITY: ALL 3.06” EL SERIES WIRELINE BOPs PSB-037-PIB FIELD PAINTING OF TOT EQUIP 1997-05 EFFECTIVITY: TOT RECOMMENDATION FOR FIELD PAINTING OF TOT EQUIPMENT PSB-038-PIB ALL BOP W/BOOSTER CYLINDER 1997-06 EFFECTIVITY: ALL BOPs WITH BOOSTER CYLINDER ON SHEAR RAM ACTUATORS PSB-040-PIB ALL 3.06 QUAD BOP 1997-10 EFFECTIVITY: ALL 3.06” QUAD BOPs PSB-005-PIB EQUALIZING VALVE SEAT 1998-02 EFFECTIVITY: ALL EL SERIES BOPs: EQUALIZING VALVE SEAT PSB-008-PIB 3.06 QUAD BOP SHEAR RAMS 1998-02 EFFECTIVITY: 3.06” QUAD BOPs: SHEAR RAMS AND BOOSTER CYLINDERS PSB-009-PIB 2.50 QUAD BOP SHEAR RAMS 1998-02 EFFECTIVITY: 2.50” QUAD BOPs: SHEAR RAMS AND BOOSTER CYLINDERS PSB-018-PIB LIFT SWIVELS 1998-02 EFFECTIVITY: LIFT SWIVELS PSB-019-PIB 2.00 HAMMER UNION CK VALVE 1998-02 EFFECTIVITY: 2.00” HAMMER UNION CHECK VALVE PSB-020-PIB EQUALIZING VALVE BONNET 1998-02 EFFECTIVITY: EQUALIZING VALVE BONNET P/N 7808-1422L PSB-021-PIB 2.50 QUAD SLIP RAM GUIDE 1998-02 EFFECTIVITY: 2.50” QUAD BOP: SLIP RAM GUIDE FOR 1.50” COILED TUBING PSB-023-PIB 3.06 HYDRACONN LOCK DOGS 1998-02 EFFECTIVITY: 3.06” HYDRACONN LOCK DOGS P/N 9104-1025, B OR L PSB-025-PIB 5.12 HYDRACONN LOCK DOGS 1998-02 EFFECTIVITY: 5.12” HYDRACONN LOCK DOGS P/N 9106-1725, B OR L PSB-026-PIB 4.06 HYDRACONN LOCK DOGS 1998-02 EFFECTIVITY: 4.06” HYDRACONN LOCK DOGS P/N 9106-1025, B OR L PSB-027-PIB 3.06 4.06 5.12 HYDRACONN 1998-02 EFFECTIVITY: 3.06”, 4.06” & 5.12” HYDRACONN UNLATCH PSB-033-PIB 3.00 COMBI BOP HYD CAPS 1998-02 EFFECTIVITY: ALL 3.00 COMBI BOP: HYDRAULIC CAPS P/N 8801-1422 & 8801-1422G PSB-034-PIB 4.06 10K QUAD/COMBI SLIP 1998-02 EFFECTIVITY: ALL 4.06” 10K QUAD AND COMBI BOP: SLIP RAM ASSEMBLIES PSB-022-PIB RAM CREEP RESIDUAL PRESSURE 1998-03 2

D601005758-IDX-001 Revision 52

EFFECTIVITY: ALL BOPs EQUIPPED WITH BOOSTER CYLINDER ASSEMBLIES ON THE SHEAR ACTUATOR: RAM CREEP DUE TO RESIDUAL PRESSURE PSB-030-PIB 4.06 10K EH/EC QUAD BOP 1998-03 EFFECTIVITY: ALL 4.06” 10K EH & EC SERIES QUAD Bops: CONTAINING PISTON RODS WITH GUIDE P/N 8412-2843 PSB-031-PIB JIC2/JIC3 INJECTOR CONN 1998-03 EFFECTIVITY: ALL JIC2 & JIC3 INJECTOR CONNECTORS FOR USE ON 3.06” & 4.06” 10K & 15K STRIPPER PACKERS PSB-039-PIB 2.50 10K DS74 SIDEDOOR S/P 1998-03 EFFECTIVITY: ALL 2.50” 10K DS74 SIDEDOOR STRIPPER PACKERS PSB-041-PIB 3.06 10K EH/EC QUAD BOP 1998-06 EFFECTIVITY: ALL 3.06” 10K EH & EC SERIES QUAD BOPs: NEW WEDGE SLIP DESIGN PSB-042-PIB 7.06 5K ANNULAR BOP PISTON 1998-06 EFFECTIVITY: ALL 7.06” 5K ANNULAR BOP: PISTON REMOVAL PSB-044-PIB 7.06 5K EG SLIP RAM ASSY 1998-11 EFFECTIVITY: ALL 7.06” 5K EG SERIES BOP: SLIP RAM ASSEMBLY INSERTS PSB-045-PIB 4.06 15K COMBI PIPE SLIP 1999-01 EFFECTIVITY: ALL 4.06” 15K COMBI: PIPE SLIP RAMS PSB-046-PIB 4.06 10K SIDEDOOR S/P 1999-10 EFFECTIVITY: ALL 4.06” 10K SIDEDOOR STRIPPER PACKER PSB-017-PIB 2.50/4.06 TANDEM & S/D S/P 2000-02 EFFECTIVITY: 2.50” 4.06” TANDEM AND SIDEDOOR STRIPPER PACKER PSB-043-PIB ALL LOCKING COLLARS 2000-05 EFFECTIVITY: ALL LOCKING COLLARS PSB-047-PIB 4.06 10K EH/EC QUAD PISTON 2000-05 EFFECTIVITY: ALL 4.06” 10K EH & EC SERIES QUAD Bops: HYDRAULIC ACTUATOR ASSEMBLY PSB-048-PIB 4.06 10K EH/EC SLIP RAM 2000-05 EFFECTIVITY: ALL 4.06” 10K EH/EC SERIES QUAD BOP: SLIP RAM ASSEMBLY PSB-049-PIB LOCKING COLLAR 8704-0931L 2000-07 EFFECTIVITY: LOCKING COLLAR 8704-0931L PSB-050-PIB ALL 15K ES BOP PISTON ROD 2001-02 EFFECTIVITY: ALL 15K ES SERIES BOP: PISTON ROD HEAD PSB-054-PIB 3.06/4.06 15K ES PIPE/SLIP 2001-07 EFFECTIVITY: ALL 3.06” & 4.06” 15K ES SERIES BOP: PIPE/SLIP RAM INSTALLATION PROBLEM PSB-055-PIB JIC3 INJECTOR CONNECTOR 2001-11 EFFECTIVITY: 3.06” JIC3 INJECTOR CONNECTORS: JIC3-HH00, JIC3-BH00, JIC2-HH00 PSB-056-PIB 4.06 10K EH/EC BOP 2002-01 EFFECTIVITY: 4.06” 10K EH & EC SERIES QUAD AND COMBI BOP PSB-057-PIB 3.06 10K/15K COMBI S/S 2002-01 EFFECTIVITY: 3.06” 10K & 15K COMBI BOP: SHEAR/SEAL BLADES PSB-058-PIB 7.06 5K ANNULAR BOP 2002-05 EFFECTIVITY: 7.06” 5K ANNULAR BOP: PACKER ELEMENT PSB-059-PIB 3.06 10K EK QUAD BOP 2002-07 EFFECTIVITY: 3.06 10K EK SERIES QUAD BOP: SLIP AND SHEAR ACTUATORS ONLY PSB-060-PIB CABLE SIDE ENTRY SUB 2002-09 EFFECTIVITY: CABLE SIDE ENTRY SUB (CSES): MATCHED CLAMP PLATE ASSEMBLY PSB-062:PIB NEW NACE SPECIFICATION 2003-02 EFFECTIVITY: NEW NACE SPECIFICATION: H2S APPLICATIONS PSB-063-PIB 4.06 10K DTS4 TANDEM S/P 2003-03 EFFECTIVITY: ALL 4.06” 10K DTS4 SERIES TANDEM STRIPPER PACKER: MAIN PISTON 3

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PSB-064-PIB SLIP INSERTS W/WELDED GUIDE 2003-11 EFFECTIVITY: ALL SLIP INSERTS WITH WELDED GUIDE IN 4.06” AND LARGER SLIP RAMS PSB-061-PIB 3.06/4.06 OVER/UNDER S/P 2004-01 EFFECTIVITY: 3.06” & 4.06” OVER/UNDER STRIPPER PACKER ALERT:DSV6, DSU4 & DSU6 PSB-065-PIB SHEAR BOOSTER BREATHER 2004-01 EFFECTIVITY: ALL SHEAR BOOSTER BREATHER P/N 7912-2551 PSB-066-PIB 7.06 10K PIPE/SLIP RAM ASSY 2004-04 EFFECTIVITY: 7.06” 10K PIPE/SLIP RAM ASSEMBLY PSB-067-PIB 7.06 10K PIPE/SLIP RAM ASSY 2004-06 EFFECTIVITY: 7.06” 10K PIPE/SLIP RAM ASSEMBLY PSB-068-PIB 4.06 10K DTZ4 TANDEM S/P 2004-08 EFFECTIVITY: 4.06” 10K DTZ4 SERIES TANDEM STRIPPER PACKER:DYNAMIC O-RING REPLACEMENT PSB-071-PIB 4.06 10K DTS4 TANDEM S/P 2004-08 EFFECTIVITY: 4.06” 10K DTS4 SERIES TANDEM STRIPPER PACKER:DYNAMIC O-RING REPLACEMENT PSB-070-PIB 4.06 10K DTB/DTA TANDEM S/P 2004-08 EFFECTIVITY: 4.06” 10K DTB4 & DTA4 TANDEM STRIPPER PACKER O-RING REPLACEMENT PSB-069-PIB 4.06 10K EH/EC BOP P/S ACT 2004-09 EFFECTIVITY: 4.06” 10K EH44 & EC44 SERIES BOP: PIPE/SLIP ACTUATOR PSB-072-PIB 3.06 EL WIRELINE RAMS 2004-12 EFFECTIVITY: 3.06” EL SERIES WIRELINE RAMS FOR 3/16” & 7/32” WL PSB-073-PIB 7.06 15K EG72 PIPE/SLIP 2005-01 EFFECTIVITY: 7.06” 15K EG72 SERIES BOP: PIPE/SLIP FRONT SEALS FOR 2 5/8” AND LARGER TUBING SIZES PSB-075-PIB 4.06 10K/15K SLIP INSERTS 2005-04 EFFECTIVITY: 4.06” 10K/15K EH/EC SERIES SLIP RAM INSERTS PSB-076-PIB 4.06 DSX SIDEWINDER S/P 2005-08 EFFECTIVITY: 4.06” 10K/15K DSX4 & DSX6 SERIES SIDEWINDER STRIPPER PACKER PSB-077-PIB 3.06 10K SHEAR/SEAL PISTON 2005-11 EFFECTIVITY: 3.06” 10K SHEAR/SEAL PISTON ROD P/N 9706-1145 & 9706-1145B PSB-078-PIB 3.00 10K SHEAR/SEAL PISTON 2005-12 EFFECTIVITY: 3.00” SHEAR/SEAL PISTON ROD P/N 9706-1145 & 9706-1145B PSB-081-PIB 5.12 ES P/S RAM FRONT SEAL 2006-02 EFFECTIVITY: 5.12” ES BOP PIPE/SLIP RAM ASSEMBLY: FRONT SEAL P/N 8505-5300 BATCH # 102282 COMPRESSION PIN 2002-3793B PSB-082-PIB 5.12 ES P/S COMPRESSION 2006-02 EFFECTIVITY: 5.12” ES BOP PIPE/SLIP RAM ASSEMBLY: COMPRESSION PIN 2002-3793B PSB-083-PIB CABLE SIDE ENTRY SUB BODY 2006-03 EFFECTIVITY: 3.5 & 4.5 CABLE SIDE ENTRY SUB BODY AND ADAPTER SUBS PSB-085-PIB 4.06 10K EH PISTON KEEPER 2006-04 EFFECTIVITY: 4.06” 10K EH SERIES SHEAR/SEAL ACTUATOR W/BOOSTER CYLINDER: PISTON KEEPER P/N 9701-2027 PSB-086-PIB 4.06 10K PIPE/SLIP RAM 2006-04 EFFECTIVITY: 4.06” 10K PIPE/SLIP RAM ASSEMBLIES 8440-57**A AND 8440-57**AB (*CT SIZE) PSB-087 SUBSEA ACTUATOR BALL CK 2007-01 EFFECTIVITY: SUBSEA ACTUATOR BALL CHECK HOUSING PSB-088 4.06 REAR SEAL 7804-2537 2007-06 EFFECTIVITY: 4.06 REAR SEAL 7804-2537 D601000180-PIB-001 DSV4/6 W/J-SLOT SLIP BOWL 2007-06 EFFECTIVITY: DSV4/6 SERIES W/J-SLOT SLIP BOWL MOUNTED TO HR680 INJECTOR D601000111-PIB-001 PIPE/SLIP RAMS 4.06 5.12 BOP 2008-03 4

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EFFECTIVITY: 4.06” & 5.12” 10K & 15K BOP: PIPE/SLIP RAMS D601000649-PIB-001 3.06 ES, EU & EY SHEAR ACT 2008-03 EFFECTIVITY: 3.06” ES, EU & EY SERIES BOP: SHEAR ACTUATOR D601000454-PIB-001 RAM GUIDE 8841-0128B 2008-06 EFFECTIVITY: RAM GUIDE 8841-0128B TRACE # 402251 D601001227-PIB-001 JK46 QUICK DISCONNECT 2009-11 EFFECTIVITY: Lock Dogs/Stinger D601002005-PIB-001 CB44 UNION BACKUP RING 2010-01 EFFECTIVITY: CB44 UNION BACKUP RING P/N 7992-1644 D601002023-PIB-001 BOP FRONT SEAL 7804-3600 2010-01 EFFECTIVITY: BOP FRONT SEAL 7804-3600, 7804-3700 & 7804-3900 D601002510-PIB-001 BLADE TO BLADE SEAL EZ44 2010-06 EFFECTIVITY: BLADE TO BLADE SEAL EZ44 P/N 503682/005 D601005432-PIB-001 4.06 10K DSQ4 STRIPPER 2011-03 EFFECTIVITY: 4.06” 10K DSQ4 STRIPPER PACKER SECONDARY M-SEAL LEAKAGE PISTON P/N 2002-0148 M-SEAL GROOVE D601005576-PIB-001 3.06 4.06 SHEAR/SEAL BLADES 2011-03 EFFECTIVITY: 3.06” & 4.06” SHEAR/SEAL BLADES P/N 8801-1144 & 8801-0144 EZ4R-VS61A-PIB-001 EZ4R BLADE MODIFICATION 2011-05 EFFECTIVITY: EZ44 BOWEN SLIDELOCK 4.06” 10M DUAL BOP SHEAR/SEAL RAM ASSEMBLY BLADE MODIFICATION: BLADE – 503679/005 BLADE TO BLADE SEAL – 503682/005 D601009503-PIB-001 EZ44 SLIDE LOK BOP HANDLE 2012-02 EFFECTIVITY: EZ44 SLIDE-LOK BOP HANDLE PART NO 2005-0267 D601009804-PIB-001 EZ44 S/S RAM OUTER SEAL 2012-05 EFFECTIVITY: M601009621 EZ44 SLIDE-LOK SHEAR/SEAL RAM OUTER SEAL D601009806-PIB-001 EZ44 SEAL BLADE TO RAM BODY 2012-05 EFFECTIVITY: EZ44 SLIDE-LOK SEAL BLADE TO RAM BODY 503683-005 D601009873-PIB-001 3.06 10M ES TRIPLE BOP 2012-06 EFFECTIVITY: Guide Rod M601005300B-PIB-001 7.06 15M BX156 X BX 169 2012-06 EFFECTIVITY: M601005300B - 7.06 15M BX156 X 5.12 15M BX169 SPOOL D601010144-PIB-001 SH 7.06” PEEK SIDEPACKERS 2012-08 EFFECTIVITY: 2002-1481P, 2002-1482P, 2002-1483P, 2002-1484P, 2002-1481-MLK-694K & 2002-1482-MLK-694K REPLACEMENT OF SAFETY HEAD MLK SIDE PACKERS WITH PEEK SIDE PACKERS D601010444-PIB-001 4.06 8801 SHEAR BLADE MOD 2013-03 EFFECTIVITY: 4.06” SHEAR SEAL RAM BLADE DESIGN IMPROVEMENT; BLADES: LOW TEMP NITRILE: 8801-05** & 880106**; LOW TEMP VITON: 8801-07**B & 8801-08**B; VITON: 8801-07** & 8801-08** D601010882-PIB-001 BOP MANUAL LOCKS, TORQUE 2013-05 EFFECTIVITY: BOP MANUAL LOCKS, TORQUE RATING D601011008-PIB-001 ES64 MANUAL LOCK SCREW 2013-06 EFFECTIVITY: ES64 PIPE, PIPE/SLIP ACTUATOR M60ES64-ACT2XL & M60ES64-ACT3XL MANUAL LOCK SCREW 7949-3221B-PIB-001 7949-3221B BONNET BOLT 2014-01 EFFECTIVITY: 7949-3221B BONNET BOLT SPLIT DOWN CENTER D601012441-PIB-001 SLIP INSERT PROD. IMPROVE 2014-08 EFFECTIVITY: 9206-25** SLIP INSERT DESIGN IMPROVEMENT M60EGA72-PIB-001 EGA72 PISTON SET SCREW 2014-11-12 EFFECTIVITY: ADDITION SET SCREW 7942-0402 PISTON/PISTON ROD D601012729-PIB-001 COMBI SHEAR BLADE 1.75 2.38 2014-12-18 5

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EFFECTIVITY: COMBI SHEAR BLADE PROCUREMENT D601012627-PIB-001 RAM ELASTOMER VARIANCE 2015-01-23 EFFECTIVITY: COMPOUND USED FOR SSR AND GSR SEALS IN SUBSEA APPLICATIONS 2005-2020-PIB-001 TOP SEAL INSERTS 2015-04-08 EFFECTIVITY: 2005-2020, TOP SEAL 7.06 5M ‘EG’ SHEAR/SEAL FAILURE 9801-1222-PIB-001 9801-1222 DE-BOOSTER CYL 2015-05-26 EFFECTIVITY: REPLACEMENT OF DE-BOOSTER CYLINDER 9801-1222B D601013126-PIB-001 5.12” S/S BLADES 2.88 & 3.5 2015-06-12 EFFECTIVITY: 5.12” SHEAR SEAL BLADES OF SIZES 2 7/8” AND 3.50”; 8505-5973, 8505-5988, 9622-0788 D601013236-PIB-001 5.12 ES ACT9 WELL RATIO 2015-07-30 EFFECTIVITY: M60ES56-ACT9, M60ES56-ACT9B, M60ES56-ACT9ZL, M60ES56-ACT17YL D60EGA72-PIB-002 EGA72 TOP SEAL FOR S/S RAMS 2015-09-01 EFFECTIVITY: TOP SEAL FROM 2005-2020 TO M601013282M; RAM ASSEMBLIES FROM EG72-TS88XB, EG72-TS88X TO M60EGA72-MS88XB D601013344-PIB-001 5.12 EC/EH SSR 2.875 & 3.50 2015-09-17 EFFECTIVITY: 5.12” 10K RAM BODIES FOR 2.875 COIL MODIFICATION; 5.12 SHEAR/SEAL RAM BODY RH: 9211-1188 5.12 SHEAR/SEAL RAM BODY LH: 9211-1288 D601013435-PIB-001 HAL 7.06 10K SLIP RAM 2015-11-05 EFFECTIVITY: 7.06 10K ES SLIP RAMS M60ES7R-0G51AL D60EGA72-PIB-003 EGA72 BONNET SEAL 2015-12-02 EFFECTIVITY: THE BONNET SEAL FOR ALL EGA BOPS CHANGED. OLD SEAL: 7813-J377; NEW SEAL: P601013447 D601013499-PIB-001 SLIP RAM PIN RETAINER 2016-01-08 EFFECTIVITY: NOTICE TO CUSTOMERS USING SLIP RAMS ON BOPS WITH RETAINER PINS. ALL SLIP RAMS DSO6-1469-PIB-001 DSO6 RR S/W 2016-03-02 EFFECTIVITY: INSTALLATION OF TUBING GUIDES AFFECTED ASSEMBLIES: DSKR-UW**AL , DSKR-UA**AL 9705-2022-PIB-001 HYDRACONN LOCK DOGS 2016-03-03 EFFECTIVITY: 5.12” JU56 HYDRACONN LOCK DOGS 9705-2022 D601013667-PIB-001 SAFETYHEAD SIDEPACKER 2016-04-20 EFFECTIVITY: SAFETYHEAD SIDE PACKER SEALS: 2002-1481P, 2002-1482P, 2002-1483P, 2002-1484P D601013702-PIB-001 JK46 CONNECTOR 2016-05-11 EFFECTIVITY: Product Service Bulletin for JK46 Quick Disconnect Connectors:JK46-1GL6X, M60JK46-146WL, M60JK461A1WL, M60JK46-1A2WL, M60JK46-1A3WL, M60JK46-1A4WL, M60JK46-1F40L ES56-ACT2-PIB-001 ES56 5.12 15K SLIP RAM QUAD BOP 2016-07-08 EFFECTIVITY: ES54 Slip Ram Assemblies; New Spacer Bushing 1000011781-PIN STRIPPER PACKER BRASS BUSHING 2016-08-26 EFFECTIVITY: Stripper Packer Bushings; Decrease Bushing Friction 1000011850-PIN PIPE/SLIP-SLIP INSERT RETENTION 2016-10-04 EFFECTIVITY: OBSOLETE reference 1000012819-PIB 1000011840-PIN BOP STEM SEAL SST ENERGIZER 2016-10-21 EFFECTIVITY: All Models Texas Oil Tools BOPs; BOP Stem Seal Stainless Steel Energizer 1000011858-PIB ES GUIDE ROD MATERIAL 9905-2936 2016-11-03 EFFECTIVITY: ES46 and ES44 shear/seal and pipe/slip actuators. DD46 shear/seal actuators; Required Replacement of Guide Rods 9905-2424 and 9905-2936 1000011981-PIB STRIPPER PACKER RELIEF VALVE 2017-03-13 EFFECTIVITY: Texas Oil Tools Stripper Packers; DSA4, DSA6, DSH4, DSH6, DSQ4, DSU4, DSU6, DSV4, DSV6, DSW4, DSW6 1000012006-PIB SAFETYHEAD RAM SEAL INSTALLATION 2017-04-04 EFFECTIVITY: All Safetyhead Shear/Seal Ram Assemblies 1000012190-PIB PISTON SEAL EH MODEL BOP 2017-07-11 6

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EFFECTIVITY: Texas Oil Tools EH54 Blowout Preventer; Piston Seal 1000012215-PIN EIA74 EXTENDED CLEVIS 2017-08-11 EFFECTIVITY: All EIA74 Series BOP Actuators; Clevis and Locking Wedge Improvement 1000011935-PIB EIA SERIES BOP WEDGE BORE CLEANUP 2017-08-15 EFFECTIVITY: All EIA74 Series BOP Actuators; Corrosion clean up and Maintenance/Preservation in EIA Wedge lock bore 1000012236-PIB JU56 CONNECTOR SAFETY LATCH 2017-09-14 EFFECTIVITY: Upgrades available; Torsion Spring: 9705-2629; Gland Nut: 9705-2627; Lock Piston: 9705-2628 1000012281-PIB CT CONDITION EVAL HYDRAULIC PSI 2017-10-19 EFFECTIVITY: All BOPs with Slip or Pipe/Slip Rams; Coiled Tubing Condition Evaluation, Slip and Pipe/Slip Rams; Anticipated Minimum and Maximum Hydraulic Pressures 1000012342-PIB EH44 BOP ACTUATOR ROD NUT 2017-11-09 EFFECTIVITY: All EH44 & EC44 Quad BOPs; Actuator Rod Nut Evaluation and Possible Replacement 1000012378-PIB DD46-ACT2X 15M SNUBBING ACT 2017-12-21 EFFECTIVITY: DD46 Snubbing BOPs; required torque values on threaded connections, change rod 1000012440-PIB EGA BONNET SEALS 2018-02-02 EFFECTIVITY: ALL EGA BOPs with Bonnet Seal P601013447 Rev. 01 1000012523-PIB CLOSING PRESSURE IN REGARD TO COIL 2018-05-10 EFFECTIVITY: All BOP’s with Slip or Pipe Slip 1000012661-PIB RECOMMENDED BONNET BOLT TORQUE 2018-08-25 EFFECTIVITY: All Bonnet Bolts on actuators for ES, EH, EC, EG, and EGA BOPs 1000012717-PIN EIA74 CLEVIS & LOCKING WEDGE 2018-09-12 EFFECTIVITY: EIA74 Series SSR BOP Actuators; EIA74 SSR Clevis and Locking Wedge Improvement 1000012817-PIB SLIP INSERT INSTALLATION 2018-12-14 EFFECTIVITY: Awareness of ram body size specific slip inserts. (4.06 vs. 5.12) All Slip ram assemblies 1000012819-PIB SLIP INSERT RETENTION REVISION 2018-12-19 EFFECTIVITY: Pipe-slip ram, All Models - 10K: 3.06” EH, EC, EK & ES; 4.06” EH, EC & ES; 5.12” EH & EC 15K: 3.06” & 4.06” ES 1000012853-PIB 5.12 8505 SHEAR/SEAL BLADE MOD 2019-01-31 EFFECTIVITY: All 5.12” Shear/Seal Ram Blades; 8505-82**, 8505-81**, 8505-59**B, 8505-57**B, 8505-59**, 8505-57** 1000012906-PIB DSA6 STRIPPER PACKER EXTRA SEAL 2019-03-07 EFFECTIVITY: Texas Oil Tools Stripper Packers DSA6 1000014390-PIB JIC3 CONNECTOR BOLT TORQUE 2019-05-31 EFFECTIVITY: Bolting: 7935-1408, 7935-1408B, 7935-1408G, 7931-1610, 7931-1610B, 7931-2412, 7931-2412B, 79351610, 7935-1610B, 7935-1612, 7935-1612B, 7935-1612G, 7935-1613, 7935-2314 1000033495-PIB INDICATOR HOUSING ASSEMBLY NEW DESIGN 2019-8-06 EFFECTIVITY: ET SafetyHead Indicator Housing New Design vs. Legacy Design 1000033496-PIB INDICATOR HOUSING ASSEMBLY NEW DESIGN 2019-8-12 EFFECTIVITY: EIA Subsea Actuator Indicator Housing New Design vs. Legacy Design 1000033595-PIB SPLIT SLIP INSERTS 9328-04** 2019-12-20 EFFECTIVITY: Notification of Pre-split slip inserts for 5.12” ES BOPs 1000033622-PIB EIA SERIES BOP LOCK PISTON SPACER 2020-02-05 EFFECTIVITY: All EIA series actuators; addition of lock piston rod seal spacer between polypak rod seals 1000033697-PIB GICH PACK-OFF ASSEMBLY PACKERS 2020-05-15 EFFECTIVITY: Line Rubber 503449-***; DB4K 10K 1000033701-PIB LUBRICATORS, RISERS INCORRECT TAG 2020-05-18 EFFECTIVITY: API 6A SPOOL TAGGING; November 2019 – May 2020 lubricator and riser assemblies 1000033710-PIB EGA RAM TOP SEAL & BLADE SEAL INSTALLATION 2020-06-02 EFFECTIVITY: Top Seal: M601013282M, Blade Seal: 2005-2015; All EGA Shear Seal Ram Assemblies 7

PRODUCT SERVICE BULLETINS Index

NOV TEXAS OIL TOOLS INDEX OF PRODUCT BULLETINS

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 T: 936.777.6100

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This document contains proprietary and confidential information which belongs to National Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as “NOV”). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV. ©National Oilwell Varco

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NOV TEXAS OIL TOOLS PRODUCT BULLETINS BULLETIN NUMBER SUBJECT ISSUE DATE PSB-014-PIB 5” JHS CONNECTOR 1993-05 EFFECTIVITY: All 5” JHS Connectors: Modification to Seal Retainer PSB-028-PIB 4.06 10K & 15K QUAD SLIP 1995-10 EFFECTIVITY: Slip Rams purchased Jan to Oct. 1995; Part nos. 9206-2335 thru 9206-2573; Slip Insert drill & pin mod PSB-035-PIB 2.50 TANDEM SIDEDOOR S/P 1996-09 EFFECTIVITY: All 2.50” Tandem Side Door Strippers; Step Ring 9101-2926 to 9628-2120 PSB-029-PIB 3.06 COMBI BOP GUIDE PINS 1996-10 EFFECTIVITY: All 3.06” Combi BOP; Guide Pin Rev C PSB-032-PIB DTS4 & DTS6 SIDEWINDER S/P 1997-01 EFFECTIVITY: All DST Sidewinder Strippers; Excessive Packer & Bushing wear; Re-designed Packer and Energizer PSB-036-PIB ALL 3.06 EL WIRELINE BOP 1997-05 EFFECTIVITY: ALL 3.06” EL SERIES WIRELINE BOPs PSB-037-PIB FIELD PAINTING OF TOT EQUIP 1997-05 EFFECTIVITY: TOT RECOMMENDATION FOR FIELD PAINTING OF TOT EQUIPMENT PSB-038-PIB ALL BOP W/BOOSTER CYLINDER 1997-06 EFFECTIVITY: ALL BOPs WITH BOOSTER CYLINDER ON SHEAR RAM ACTUATORS PSB-040-PIB ALL 3.06 QUAD BOP 1997-10 EFFECTIVITY: ALL 3.06” QUAD BOPs PSB-005-PIB EQUALIZING VALVE SEAT 1998-02 EFFECTIVITY: ALL EL SERIES BOPs: EQUALIZING VALVE SEAT PSB-008-PIB 3.06 QUAD BOP SHEAR RAMS 1998-02 EFFECTIVITY: 3.06” QUAD BOPs: SHEAR RAMS AND BOOSTER CYLINDERS PSB-009-PIB 2.50 QUAD BOP SHEAR RAMS 1998-02 EFFECTIVITY: 2.50” QUAD BOPs: SHEAR RAMS AND BOOSTER CYLINDERS PSB-018-PIB LIFT SWIVELS 1998-02 EFFECTIVITY: LIFT SWIVELS PSB-019-PIB 2.00 HAMMER UNION CK VALVE 1998-02 EFFECTIVITY: 2.00” HAMMER UNION CHECK VALVE PSB-020-PIB EQUALIZING VALVE BONNET 1998-02 EFFECTIVITY: EQUALIZING VALVE BONNET P/N 7808-1422L PSB-021-PIB 2.50 QUAD SLIP RAM GUIDE 1998-02 EFFECTIVITY: 2.50” QUAD BOP: SLIP RAM GUIDE FOR 1.50” COILED TUBING PSB-023-PIB 3.06 HYDRACONN LOCK DOGS 1998-02 EFFECTIVITY: 3.06” HYDRACONN LOCK DOGS P/N 9104-1025, B OR L PSB-025-PIB 5.12 HYDRACONN LOCK DOGS 1998-02 EFFECTIVITY: 5.12” HYDRACONN LOCK DOGS P/N 9106-1725, B OR L PSB-026-PIB 4.06 HYDRACONN LOCK DOGS 1998-02 EFFECTIVITY: 4.06” HYDRACONN LOCK DOGS P/N 9106-1025, B OR L PSB-027-PIB 3.06 4.06 5.12 HYDRACONN 1998-02 EFFECTIVITY: 3.06”, 4.06” & 5.12” HYDRACONN UNLATCH PSB-033-PIB 3.00 COMBI BOP HYD CAPS 1998-02 EFFECTIVITY: ALL 3.00 COMBI BOP: HYDRAULIC CAPS P/N 8801-1422 & 8801-1422G PSB-034-PIB 4.06 10K QUAD/COMBI SLIP 1998-02 EFFECTIVITY: ALL 4.06” 10K QUAD AND COMBI BOP: SLIP RAM ASSEMBLIES PSB-022-PIB RAM CREEP RESIDUAL PRESSURE 1998-03 2

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EFFECTIVITY: ALL BOPs EQUIPPED WITH BOOSTER CYLINDER ASSEMBLIES ON THE SHEAR ACTUATOR: RAM CREEP DUE TO RESIDUAL PRESSURE PSB-030-PIB 4.06 10K EH/EC QUAD BOP 1998-03 EFFECTIVITY: ALL 4.06” 10K EH & EC SERIES QUAD Bops: CONTAINING PISTON RODS WITH GUIDE P/N 8412-2843 PSB-031-PIB JIC2/JIC3 INJECTOR CONN 1998-03 EFFECTIVITY: ALL JIC2 & JIC3 INJECTOR CONNECTORS FOR USE ON 3.06” & 4.06” 10K & 15K STRIPPER PACKERS PSB-039-PIB 2.50 10K DS74 SIDEDOOR S/P 1998-03 EFFECTIVITY: ALL 2.50” 10K DS74 SIDEDOOR STRIPPER PACKERS PSB-041-PIB 3.06 10K EH/EC QUAD BOP 1998-06 EFFECTIVITY: ALL 3.06” 10K EH & EC SERIES QUAD BOPs: NEW WEDGE SLIP DESIGN PSB-042-PIB 7.06 5K ANNULAR BOP PISTON 1998-06 EFFECTIVITY: ALL 7.06” 5K ANNULAR BOP: PISTON REMOVAL PSB-044-PIB 7.06 5K EG SLIP RAM ASSY 1998-11 EFFECTIVITY: ALL 7.06” 5K EG SERIES BOP: SLIP RAM ASSEMBLY INSERTS PSB-045-PIB 4.06 15K COMBI PIPE SLIP 1999-01 EFFECTIVITY: ALL 4.06” 15K COMBI: PIPE SLIP RAMS PSB-046-PIB 4.06 10K SIDEDOOR S/P 1999-10 EFFECTIVITY: ALL 4.06” 10K SIDEDOOR STRIPPER PACKER PSB-017-PIB 2.50/4.06 TANDEM & S/D S/P 2000-02 EFFECTIVITY: 2.50” 4.06” TANDEM AND SIDEDOOR STRIPPER PACKER PSB-043-PIB ALL LOCKING COLLARS 2000-05 EFFECTIVITY: ALL LOCKING COLLARS PSB-047-PIB 4.06 10K EH/EC QUAD PISTON 2000-05 EFFECTIVITY: ALL 4.06” 10K EH & EC SERIES QUAD Bops: HYDRAULIC ACTUATOR ASSEMBLY PSB-048-PIB 4.06 10K EH/EC SLIP RAM 2000-05 EFFECTIVITY: ALL 4.06” 10K EH/EC SERIES QUAD BOP: SLIP RAM ASSEMBLY PSB-049-PIB LOCKING COLLAR 8704-0931L 2000-07 EFFECTIVITY: LOCKING COLLAR 8704-0931L PSB-050-PIB ALL 15K ES BOP PISTON ROD 2001-02 EFFECTIVITY: ALL 15K ES SERIES BOP: PISTON ROD HEAD PSB-054-PIB 3.06/4.06 15K ES PIPE/SLIP 2001-07 EFFECTIVITY: ALL 3.06” & 4.06” 15K ES SERIES BOP: PIPE/SLIP RAM INSTALLATION PROBLEM PSB-055-PIB JIC3 INJECTOR CONNECTOR 2001-11 EFFECTIVITY: 3.06” JIC3 INJECTOR CONNECTORS: JIC3-HH00, JIC3-BH00, JIC2-HH00 PSB-056-PIB 4.06 10K EH/EC BOP 2002-01 EFFECTIVITY: 4.06” 10K EH & EC SERIES QUAD AND COMBI BOP PSB-057-PIB 3.06 10K/15K COMBI S/S 2002-01 EFFECTIVITY: 3.06” 10K & 15K COMBI BOP: SHEAR/SEAL BLADES PSB-058-PIB 7.06 5K ANNULAR BOP 2002-05 EFFECTIVITY: 7.06” 5K ANNULAR BOP: PACKER ELEMENT PSB-059-PIB 3.06 10K EK QUAD BOP 2002-07 EFFECTIVITY: 3.06 10K EK SERIES QUAD BOP: SLIP AND SHEAR ACTUATORS ONLY PSB-060-PIB CABLE SIDE ENTRY SUB 2002-09 EFFECTIVITY: CABLE SIDE ENTRY SUB (CSES): MATCHED CLAMP PLATE ASSEMBLY PSB-062:PIB NEW NACE SPECIFICATION 2003-02 EFFECTIVITY: NEW NACE SPECIFICATION: H2S APPLICATIONS PSB-063-PIB 4.06 10K DTS4 TANDEM S/P 2003-03 EFFECTIVITY: ALL 4.06” 10K DTS4 SERIES TANDEM STRIPPER PACKER: MAIN PISTON 3

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PSB-064-PIB SLIP INSERTS W/WELDED GUIDE 2003-11 EFFECTIVITY: ALL SLIP INSERTS WITH WELDED GUIDE IN 4.06” AND LARGER SLIP RAMS PSB-061-PIB 3.06/4.06 OVER/UNDER S/P 2004-01 EFFECTIVITY: 3.06” & 4.06” OVER/UNDER STRIPPER PACKER ALERT:DSV6, DSU4 & DSU6 PSB-065-PIB SHEAR BOOSTER BREATHER 2004-01 EFFECTIVITY: ALL SHEAR BOOSTER BREATHER P/N 7912-2551 PSB-066-PIB 7.06 10K PIPE/SLIP RAM ASSY 2004-04 EFFECTIVITY: 7.06” 10K PIPE/SLIP RAM ASSEMBLY PSB-067-PIB 7.06 10K PIPE/SLIP RAM ASSY 2004-06 EFFECTIVITY: 7.06” 10K PIPE/SLIP RAM ASSEMBLY PSB-068-PIB 4.06 10K DTZ4 TANDEM S/P 2004-08 EFFECTIVITY: 4.06” 10K DTZ4 SERIES TANDEM STRIPPER PACKER:DYNAMIC O-RING REPLACEMENT PSB-071-PIB 4.06 10K DTS4 TANDEM S/P 2004-08 EFFECTIVITY: 4.06” 10K DTS4 SERIES TANDEM STRIPPER PACKER:DYNAMIC O-RING REPLACEMENT PSB-070-PIB 4.06 10K DTB/DTA TANDEM S/P 2004-08 EFFECTIVITY: 4.06” 10K DTB4 & DTA4 TANDEM STRIPPER PACKER O-RING REPLACEMENT PSB-069-PIB 4.06 10K EH/EC BOP P/S ACT 2004-09 EFFECTIVITY: 4.06” 10K EH44 & EC44 SERIES BOP: PIPE/SLIP ACTUATOR PSB-072-PIB 3.06 EL WIRELINE RAMS 2004-12 EFFECTIVITY: 3.06” EL SERIES WIRELINE RAMS FOR 3/16” & 7/32” WL PSB-073-PIB 7.06 15K EG72 PIPE/SLIP 2005-01 EFFECTIVITY: 7.06” 15K EG72 SERIES BOP: PIPE/SLIP FRONT SEALS FOR 2 5/8” AND LARGER TUBING SIZES PSB-075-PIB 4.06 10K/15K SLIP INSERTS 2005-04 EFFECTIVITY: 4.06” 10K/15K EH/EC SERIES SLIP RAM INSERTS PSB-076-PIB 4.06 DSX SIDEWINDER S/P 2005-08 EFFECTIVITY: 4.06” 10K/15K DSX4 & DSX6 SERIES SIDEWINDER STRIPPER PACKER PSB-077-PIB 3.06 10K SHEAR/SEAL PISTON 2005-11 EFFECTIVITY: 3.06” 10K SHEAR/SEAL PISTON ROD P/N 9706-1145 & 9706-1145B PSB-078-PIB 3.00 10K SHEAR/SEAL PISTON 2005-12 EFFECTIVITY: 3.00” SHEAR/SEAL PISTON ROD P/N 9706-1145 & 9706-1145B PSB-081-PIB 5.12 ES P/S RAM FRONT SEAL 2006-02 EFFECTIVITY: 5.12” ES BOP PIPE/SLIP RAM ASSEMBLY: FRONT SEAL P/N 8505-5300 BATCH # 102282 COMPRESSION PIN 2002-3793B PSB-082-PIB 5.12 ES P/S COMPRESSION 2006-02 EFFECTIVITY: 5.12” ES BOP PIPE/SLIP RAM ASSEMBLY: COMPRESSION PIN 2002-3793B PSB-083-PIB CABLE SIDE ENTRY SUB BODY 2006-03 EFFECTIVITY: 3.5 & 4.5 CABLE SIDE ENTRY SUB BODY AND ADAPTER SUBS PSB-085-PIB 4.06 10K EH PISTON KEEPER 2006-04 EFFECTIVITY: 4.06” 10K EH SERIES SHEAR/SEAL ACTUATOR W/BOOSTER CYLINDER: PISTON KEEPER P/N 9701-2027 PSB-086-PIB 4.06 10K PIPE/SLIP RAM 2006-04 EFFECTIVITY: 4.06” 10K PIPE/SLIP RAM ASSEMBLIES 8440-57**A AND 8440-57**AB (*CT SIZE) PSB-087 SUBSEA ACTUATOR BALL CK 2007-01 EFFECTIVITY: SUBSEA ACTUATOR BALL CHECK HOUSING PSB-088 4.06 REAR SEAL 7804-2537 2007-06 EFFECTIVITY: 4.06 REAR SEAL 7804-2537 D601000180-PIB-001 DSV4/6 W/J-SLOT SLIP BOWL 2007-06 EFFECTIVITY: DSV4/6 SERIES W/J-SLOT SLIP BOWL MOUNTED TO HR680 INJECTOR D601000111-PIB-001 PIPE/SLIP RAMS 4.06 5.12 BOP 2008-03 4

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EFFECTIVITY: 4.06” & 5.12” 10K & 15K BOP: PIPE/SLIP RAMS D601000649-PIB-001 3.06 ES, EU & EY SHEAR ACT 2008-03 EFFECTIVITY: 3.06” ES, EU & EY SERIES BOP: SHEAR ACTUATOR D601000454-PIB-001 RAM GUIDE 8841-0128B 2008-06 EFFECTIVITY: RAM GUIDE 8841-0128B TRACE # 402251 D601001227-PIB-001 JK46 QUICK DISCONNECT 2009-11 EFFECTIVITY: Lock Dogs/Stinger D601002005-PIB-001 CB44 UNION BACKUP RING 2010-01 EFFECTIVITY: CB44 UNION BACKUP RING P/N 7992-1644 D601002023-PIB-001 BOP FRONT SEAL 7804-3600 2010-01 EFFECTIVITY: BOP FRONT SEAL 7804-3600, 7804-3700 & 7804-3900 D601002510-PIB-001 BLADE TO BLADE SEAL EZ44 2010-06 EFFECTIVITY: BLADE TO BLADE SEAL EZ44 P/N 503682/005 D601005432-PIB-001 4.06 10K DSQ4 STRIPPER 2011-03 EFFECTIVITY: 4.06” 10K DSQ4 STRIPPER PACKER SECONDARY M-SEAL LEAKAGE PISTON P/N 2002-0148 M-SEAL GROOVE D601005576-PIB-001 3.06 4.06 SHEAR/SEAL BLADES 2011-03 EFFECTIVITY: 3.06” & 4.06” SHEAR/SEAL BLADES P/N 8801-1144 & 8801-0144 EZ4R-VS61A-PIB-001 EZ4R BLADE MODIFICATION 2011-05 EFFECTIVITY: EZ44 BOWEN SLIDELOCK 4.06” 10M DUAL BOP SHEAR/SEAL RAM ASSEMBLY BLADE MODIFICATION: BLADE – 503679/005 BLADE TO BLADE SEAL – 503682/005 D601009503-PIB-001 EZ44 SLIDE LOK BOP HANDLE 2012-02 EFFECTIVITY: EZ44 SLIDE-LOK BOP HANDLE PART NO 2005-0267 D601009804-PIB-001 EZ44 S/S RAM OUTER SEAL 2012-05 EFFECTIVITY: M601009621 EZ44 SLIDE-LOK SHEAR/SEAL RAM OUTER SEAL D601009806-PIB-001 EZ44 SEAL BLADE TO RAM BODY 2012-05 EFFECTIVITY: EZ44 SLIDE-LOK SEAL BLADE TO RAM BODY 503683-005 D601009873-PIB-001 3.06 10M ES TRIPLE BOP 2012-06 EFFECTIVITY: Guide Rod M601005300B-PIB-001 7.06 15M BX156 X BX 169 2012-06 EFFECTIVITY: M601005300B - 7.06 15M BX156 X 5.12 15M BX169 SPOOL D601010144-PIB-001 SH 7.06” PEEK SIDEPACKERS 2012-08 EFFECTIVITY: 2002-1481P, 2002-1482P, 2002-1483P, 2002-1484P, 2002-1481-MLK-694K & 2002-1482-MLK-694K REPLACEMENT OF SAFETY HEAD MLK SIDE PACKERS WITH PEEK SIDE PACKERS D601010444-PIB-001 4.06 8801 SHEAR BLADE MOD 2013-03 EFFECTIVITY: 4.06” SHEAR SEAL RAM BLADE DESIGN IMPROVEMENT; BLADES: LOW TEMP NITRILE: 8801-05** & 880106**; LOW TEMP VITON: 8801-07**B & 8801-08**B; VITON: 8801-07** & 8801-08** D601010882-PIB-001 BOP MANUAL LOCKS, TORQUE 2013-05 EFFECTIVITY: BOP MANUAL LOCKS, TORQUE RATING D601011008-PIB-001 ES64 MANUAL LOCK SCREW 2013-06 EFFECTIVITY: ES64 PIPE, PIPE/SLIP ACTUATOR M60ES64-ACT2XL & M60ES64-ACT3XL MANUAL LOCK SCREW 7949-3221B-PIB-001 7949-3221B BONNET BOLT 2014-01 EFFECTIVITY: 7949-3221B BONNET BOLT SPLIT DOWN CENTER D601012441-PIB-001 SLIP INSERT PROD. IMPROVE 2014-08 EFFECTIVITY: 9206-25** SLIP INSERT DESIGN IMPROVEMENT M60EGA72-PIB-001 EGA72 PISTON SET SCREW 2014-11-12 EFFECTIVITY: ADDITION SET SCREW 7942-0402 PISTON/PISTON ROD D601012729-PIB-001 COMBI SHEAR BLADE 1.75 2.38 2014-12-18 5

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EFFECTIVITY: COMBI SHEAR BLADE PROCUREMENT D601012627-PIB-001 RAM ELASTOMER VARIANCE 2015-01-23 EFFECTIVITY: COMPOUND USED FOR SSR AND GSR SEALS IN SUBSEA APPLICATIONS 2005-2020-PIB-001 TOP SEAL INSERTS 2015-04-08 EFFECTIVITY: 2005-2020, TOP SEAL 7.06 5M ‘EG’ SHEAR/SEAL FAILURE 9801-1222-PIB-001 9801-1222 DE-BOOSTER CYL 2015-05-26 EFFECTIVITY: REPLACEMENT OF DE-BOOSTER CYLINDER 9801-1222B D601013126-PIB-001 5.12” S/S BLADES 2.88 & 3.5 2015-06-12 EFFECTIVITY: 5.12” SHEAR SEAL BLADES OF SIZES 2 7/8” AND 3.50”; 8505-5973, 8505-5988, 9622-0788 D601013236-PIB-001 5.12 ES ACT9 WELL RATIO 2015-07-30 EFFECTIVITY: M60ES56-ACT9, M60ES56-ACT9B, M60ES56-ACT9ZL, M60ES56-ACT17YL D60EGA72-PIB-002 EGA72 TOP SEAL FOR S/S RAMS 2015-09-01 EFFECTIVITY: TOP SEAL FROM 2005-2020 TO M601013282M; RAM ASSEMBLIES FROM EG72-TS88XB, EG72-TS88X TO M60EGA72-MS88XB D601013344-PIB-001 5.12 EC/EH SSR 2.875 & 3.50 2015-09-17 EFFECTIVITY: 5.12” 10K RAM BODIES FOR 2.875 COIL MODIFICATION; 5.12 SHEAR/SEAL RAM BODY RH: 9211-1188 5.12 SHEAR/SEAL RAM BODY LH: 9211-1288 D601013435-PIB-001 HAL 7.06 10K SLIP RAM 2015-11-05 EFFECTIVITY: 7.06 10K ES SLIP RAMS M60ES7R-0G51AL D60EGA72-PIB-003 EGA72 BONNET SEAL 2015-12-02 EFFECTIVITY: THE BONNET SEAL FOR ALL EGA BOPS CHANGED. OLD SEAL: 7813-J377; NEW SEAL: P601013447 D601013499-PIB-001 SLIP RAM PIN RETAINER 2016-01-08 EFFECTIVITY: NOTICE TO CUSTOMERS USING SLIP RAMS ON BOPS WITH RETAINER PINS. ALL SLIP RAMS DSO6-1469-PIB-001 DSO6 RR S/W 2016-03-02 EFFECTIVITY: INSTALLATION OF TUBING GUIDES AFFECTED ASSEMBLIES: DSKR-UW**AL , DSKR-UA**AL 9705-2022-PIB-001 HYDRACONN LOCK DOGS 2016-03-03 EFFECTIVITY: 5.12” JU56 HYDRACONN LOCK DOGS 9705-2022 D601013667-PIB-001 SAFETYHEAD SIDEPACKER 2016-04-20 EFFECTIVITY: SAFETYHEAD SIDE PACKER SEALS: 2002-1481P, 2002-1482P, 2002-1483P, 2002-1484P D601013702-PIB-001 JK46 CONNECTOR 2016-05-11 EFFECTIVITY: Product Service Bulletin for JK46 Quick Disconnect Connectors:JK46-1GL6X, M60JK46-146WL, M60JK461A1WL, M60JK46-1A2WL, M60JK46-1A3WL, M60JK46-1A4WL, M60JK46-1F40L ES56-ACT2-PIB-001 ES56 5.12 15K SLIP RAM QUAD BOP 2016-07-08 EFFECTIVITY: ES54 Slip Ram Assemblies; New Spacer Bushing 1000011781-PIN STRIPPER PACKER BRASS BUSHING 2016-08-26 EFFECTIVITY: Stripper Packer Bushings; Decrease Bushing Friction 1000011850-PIN PIPE/SLIP-SLIP INSERT RETENTION 2016-10-04 EFFECTIVITY: OBSOLETE reference 1000012819-PIB 1000011840-PIN BOP STEM SEAL SST ENERGIZER 2016-10-21 EFFECTIVITY: All Models Texas Oil Tools BOPs; BOP Stem Seal Stainless Steel Energizer 1000011858-PIB ES GUIDE ROD MATERIAL 9905-2936 2016-11-03 EFFECTIVITY: ES46 and ES44 shear/seal and pipe/slip actuators. DD46 shear/seal actuators; Required Replacement of Guide Rods 9905-2424 and 9905-2936 1000011981-PIB STRIPPER PACKER RELIEF VALVE 2017-03-13 EFFECTIVITY: Texas Oil Tools Stripper Packers; DSA4, DSA6, DSH4, DSH6, DSQ4, DSU4, DSU6, DSV4, DSV6, DSW4, DSW6 1000012006-PIB SAFETYHEAD RAM SEAL INSTALLATION 2017-04-04 EFFECTIVITY: All Safetyhead Shear/Seal Ram Assemblies 1000012190-PIB PISTON SEAL EH MODEL BOP 2017-07-11 6

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EFFECTIVITY: Texas Oil Tools EH54 Blowout Preventer; Piston Seal 1000012215-PIN EIA74 EXTENDED CLEVIS 2017-08-11 EFFECTIVITY: All EIA74 Series BOP Actuators; Clevis and Locking Wedge Improvement 1000011935-PIB EIA SERIES BOP WEDGE BORE CLEANUP 2017-08-15 EFFECTIVITY: All EIA74 Series BOP Actuators; Corrosion clean up and Maintenance/Preservation in EIA Wedge lock bore 1000012236-PIB JU56 CONNECTOR SAFETY LATCH 2017-09-14 EFFECTIVITY: Upgrades available; Torsion Spring: 9705-2629; Gland Nut: 9705-2627; Lock Piston: 9705-2628 1000012281-PIB CT CONDITION EVAL HYDRAULIC PSI 2017-10-19 EFFECTIVITY: All BOPs with Slip or Pipe/Slip Rams; Coiled Tubing Condition Evaluation, Slip and Pipe/Slip Rams; Anticipated Minimum and Maximum Hydraulic Pressures 1000012342-PIB EH44 BOP ACTUATOR ROD NUT 2017-11-09 EFFECTIVITY: All EH44 & EC44 Quad BOPs; Actuator Rod Nut Evaluation and Possible Replacement 1000012378-PIB DD46-ACT2X 15M SNUBBING ACT 2017-12-21 EFFECTIVITY: DD46 Snubbing BOPs; required torque values on threaded connections, change rod 1000012440-PIB EGA BONNET SEALS 2018-02-02 EFFECTIVITY: ALL EGA BOPs with Bonnet Seal P601013447 Rev. 01 1000012523-PIB CLOSING PRESSURE IN REGARD TO COIL 2018-05-10 EFFECTIVITY: All BOP’s with Slip or Pipe Slip 1000012661-PIB RECOMMENDED BONNET BOLT TORQUE 2018-08-25 EFFECTIVITY: All Bonnet Bolts on actuators for ES, EH, EC, EG, and EGA BOPs 1000012717-PIN EIA74 CLEVIS & LOCKING WEDGE 2018-09-12 EFFECTIVITY: EIA74 Series SSR BOP Actuators; EIA74 SSR Clevis and Locking Wedge Improvement 1000012817-PIB SLIP INSERT INSTALLATION 2018-12-14 EFFECTIVITY: Awareness of ram body size specific slip inserts. (4.06 vs. 5.12) All Slip ram assemblies 1000012819-PIB SLIP INSERT RETENTION REVISION 2018-12-19 EFFECTIVITY: Pipe-slip ram, All Models - 10K: 3.06” EH, EC, EK & ES; 4.06” EH, EC & ES; 5.12” EH & EC 15K: 3.06” & 4.06” ES 1000012853-PIB 5.12 8505 SHEAR/SEAL BLADE MOD 2019-01-31 EFFECTIVITY: All 5.12” Shear/Seal Ram Blades; 8505-82**, 8505-81**, 8505-59**B, 8505-57**B, 8505-59**, 8505-57** 1000012906-PIB DSA6 STRIPPER PACKER EXTRA SEAL 2019-03-07 EFFECTIVITY: Texas Oil Tools Stripper Packers DSA6 1000014390-PIB JIC3 CONNECTOR BOLT TORQUE 2019-05-31 EFFECTIVITY: Bolting: 7935-1408, 7935-1408B, 7935-1408G, 7931-1610, 7931-1610B, 7931-2412, 7931-2412B, 79351610, 7935-1610B, 7935-1612, 7935-1612B, 7935-1612G, 7935-1613, 7935-2314 1000033495-PIB INDICATOR HOUSING ASSEMBLY NEW DESIGN 2019-8-06 EFFECTIVITY: ET SafetyHead Indicator Housing New Design vs. Legacy Design 1000033496-PIB INDICATOR HOUSING ASSEMBLY NEW DESIGN 2019-8-12 EFFECTIVITY: EIA Subsea Actuator Indicator Housing New Design vs. Legacy Design 1000033595-PIB SPLIT SLIP INSERTS 9328-04** 2019-12-20 EFFECTIVITY: Notification of Pre-split slip inserts for 5.12” ES BOPs 1000033622-PIB EIA SERIES BOP LOCK PISTON SPACER 2020-02-05 EFFECTIVITY: All EIA series actuators; addition of lock piston rod seal spacer between polypak rod seals 1000033697-PIB GICH PACK-OFF ASSEMBLY PACKERS 2020-05-15 EFFECTIVITY: Line Rubber 503449-***; DB4K 10K 1000033701-PIB LUBRICATORS, RISERS INCORRECT TAG 2020-05-18 EFFECTIVITY: API 6A SPOOL TAGGING; November 2019 – May 2020 lubricator and riser assemblies 1000033710-PIB EGA RAM TOP SEAL & BLADE SEAL INSTALLATION 2020-06-02 EFFECTIVITY: Top Seal: M601013282M, Blade Seal: 2005-2015; All EGA Shear Seal Ram Assemblies 7

PRODUCT SERVICE BULLETIN

PSBL-5” JHS CONNECTOR

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-014-PIB

B

www.nov.com

PSB-014-PIB Rev / B P a g e | 2 of 4 REVISION HISTORY

B

14/June/2011

A

Feb 1998

Rev

Date (dd.mm.yyyy)

Revision

CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A B

Change Description Initial Release Corrected doc name; Re-format

www.nov.com

JTM

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N/A

N/A

Prepared

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PSB-014-PIB Rev / B P a g e | 3 of 4 PSBL-5” JHS CONNECTOR Product All 5" JHS Connectors Reference Tech Unit 1141 Discussion Following a one-off malfunction of a 5" JHS Connector during routine operations, Texas Oil Tools wishes to advise customers using such equipment of the problem and of the design modifications which have been made to rectify this, to avoid any repetition of this problems. The Malfunction: A 5" Lift Swivel which has been used regularly over several years, and has been well maintained could not be made to fully engage and to latch. The Explanation: Detail A is of the seal arrangement when the equipment is in a new condition and shows how the seal retainer screws onto the stinger, and how it bottoms out then the 45Echamfer on the Acme thread contacts the 90E step on the stinger. This leaves a nominal gap between the seal and the seal retainer, and also a gap between the nose of the stinger and the seal retainer. The problem as shown in Detail B was found to be that the seal retainer/guide was screwing too far onto the stinger at assembly, and was squeezing the first seal. This seal was swollen outwards and could not be made to enter the seal bore in the skirt, even when considerable force was used. The Investigation: Revealed that over a period of time the 90E step on the alloy stinger had gradually worn a groove into the 45E chamfer on the soft brass seal retainer. Each time the seal retainer is screwed on, the groove is worn deeper and the seal retainer screws further onto the stinger, until eventually the seal retainer starts to compress the top seal. The Remedy: Has been to modify the seal retainer, changing the overall length and the thread detail, so that it now bottoms out flat onto the top nose of the stinger, leaving adequate clearance between the seal retainer and the top seal. This has been achieved by an engineering change to drawing 8404-0121 changing it from Rev. A to Rev. B.. All new seal retainers will be supplied to Rev. B. These will be direct replacements for the original parts (Rev. A). Revision A parts can still be used if they are in good condition using the recommendations below, however, Texas Oil Tools would strongly recommend parts be returned to be modified to Rev. B to avoid problems

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PSB-014-PIB Rev / B P a g e | 4 of 4 Note: Revision A parts are identifiable by an overall length of 2.35" Note: Revision A parts are identifiable by an overall length of 2.20" Recommendations Prior to each usage, check wthat there is a gap of approximately 1/32" or 1/16" between the seal retainer/guide and the top seal. If possible, test the latching function of the JHS prior to mobilization. When workloads permit, the seal retainer 8404-0121 Rev. A originally supplied should be returned to Texas Oil Tools where it will be modified to 8404-0121 Rev. B to ensure that this problem will not occur. This applies only to units supplied before May 1993. Contact your TOT Salesman for further details.

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PRODUCT SERVICE BULLETIN

PSBL-4.06 10K & 15K QUAD SLIP

4.06”, 10,000 & 15,000 PSI WORKING PRESSURES, QUAD BOP SLIP RAMS PURCHASED SINCE JANUARY 1995 WITH SLIP P/N 9206-2335 & 9206-2573

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-028-PIB

B

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PSB-028-PIB Rev / B P a g e | 2 of 7 REVISION HISTORY

B

14/June/2011

A

March 1998

Rev

Date (dd.mm.yyyy)

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CHANGE DESCRIPTION Revision A B

Change Description Initial Release Corrected doc name; Re-format

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PSB-028-PIB Rev / B P a g e | 3 of 7 PSBL-4.06 10K & 15K QUAD SLIP 4.06”, 10,000 & 15,000 PSI WORKING PRESSURES, QUAD BOP SLIP RAMS PURCHASED SINCE JANUARY 1995 WITH SLIP P/N 9206-2335 & 9206-2573

Product All 4.06" 10M & 15M Quad BOP Slip Rams purchased since January 1995 with Slip part numbers 9206-2335 through 9206-2573. Reference Tech Manuals: 1185, 1211 Discussion Recently, a customer reported an incident involving a 4.06" 10M Quad BOP slip ram in which the weld between the slip insert and pipe guide separated, allowing the slip insert to fall down the well. The slip insert involved was an extended grip design with the tubing guide welded to the insert, part number 9206-2337 for 1.25" diameter tubing. Solution Existing slip inserts can be drilled and pinned to anchor the guide to the insert to prevent separation. To modify parts in the field, modification drawings are included with this bulletin. Parts are to be modified to note 5 on each drawing using two pins, part number 9206-2421, for each slip insert. As an option to field modification, the slip inserts may be returned to Texas Oil Tools for modification or, new slip inserts may be ordered and the faulty slips returned for credit.

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PRODUCT SERVICE BULLETIN

PSBL-2.50 TANDEM SIDEDOOR S/P

ALL 2.50”, TANDEM SIDEDOOR STRIPPER PACKERS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-035-PIB

A

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PSB-035-PIB Rev / A P a g e | 2 of 3 REVISION HISTORY

A

14/June/2011

-

Sept 1996

Rev

Date (dd.mm.yyyy)

Revision

CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Corrected doc name; Re-format

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PSB-035-PIB Rev / A P a g e | 3 of 3

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PRODUCT SERVICE BULLETIN

PSBL-3.06 COMBI BOP GUIDE PINS

ALL 3.06” COMBI BOPs REPLACEMENT GUIDE PINS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-029-PIB

A

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PSB-029-PIB Rev / A P a g e | 2 of 4 REVISION HISTORY

A

14/June/2011

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Oct 1996

Rev

Date (dd.mm.yyyy)

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CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Corrected doc name; Re-format

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PSB-029-PIB Rev / A P a g e | 3 of 4 PSBL-3.06 COMBI BOP GUIDE PINS Product All Texas Oil Tools 31/16" COMBI BOP's. Discussion It is possible to encounter a situation with 31/16" combi BOP's where the ram can be actuated to the extended (closed) position, and can come off the guidance pin in the rambore. This could cause problems on subsequent retraction if the ram were to have experienced any rotation. No such problem has been reported and this PSB is issued as a proactive measure, before any such problem should occur. The original guide pin 8801-1439 Rev A was replaced by an improved pin (Rev B) in October 1995, (see PSB-029). The latest (Rev C) pin introduced in this PSB incorporates the advantages of the Rev B pin while giving full guidance of the ram throughout it's entire stroke. Recommendation Drexel recommends that users of 31/16" combi BOP's should upgrade their BOP's immediately with the replacement of guide pins as instructed below. Pin Replacement Procedure 1. Remove all the actuators from the BOP by first removing the cap nuts which secure the bonnets. For ease of access it may be beneficial to also remove the studs from the body using a soft strap wrench. 2. Clean the pin and the rambore; then remove the pin taking great care not to damage the rambore, the face of the BOP block onto which the bonnet seals, or the hole into which the pin fits. To remove the pin may require that it be drilled and tapped so as to enable the use of a dowel extractor. 3. Clean the hole out removing any corrosion or debris. 4. Install the replacement pins taking care to align them correctly (otherwise the rams will rub on the pin excessively). A proprietary compound such as Loctite may be used to ensure permanent installation. 5. Check the ram movement on the guide pin without the actuator in place and preferably without the ram seals to ensure correct movement within the rambore over the pin. 6. If any drilling was performed to remove the old pins, ensure that the BOP internals are clean and free of any swarf. 7. Re-assemble the BOP and hydraulically function all actuators to check correct operation.

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PRODUCT SERVICE BULLETIN

PSBL-DST4 & DST6 SIDEWINDER S/P

ALL DST4 & DST6 SERIES SIDEWINDER STRIPPER PACKERS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollock Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-032-PIB

B

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PSB-032-PIB Rev / B P a g e | 2 of 7 REVISION HISTORY

B

24/June/2014

Revision

CP

KM

MD

A

14/June/2011

Revision

CP

N/A

JTM

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Jan 1997

Rev

Date (dd.mm.yyyy)

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A B

Change Description Initial Release Corrected doc name; Re-format Correct DTS references

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PSB-032-PIB Rev / B P a g e | 3 of 7

Product DST4 and DST6 Texas Oil Tools Sidewinder Stripper Packer Discussion Excessive packer and bushing wear, leading to failure in the packer element. In our study we have found problems with the packer and energizer. We are continuing our investigation into the bushings and their life expectancy. The ram change rods do not allow enough clearance to access the packer. The T-seal on the manual caps are prone to damage during installation and disassembly. Recommendation We have redesigned the packer and energizer to increase their wear charactistics. The new energizer has a brass ring on the upper section interlocking with the packer. This brass ring prevents extrusion of the packer and the energizer. We have certain locations that have run 140,000' through one set of packer and energizers. The packer is a red, blue, and white interlocking packer. The colors must coincide with each other. To prevent any confusion just remember red goes up. To increase the life of the packers make sure the upper and lower bushings are not worn too much. Texas Oil Tools recommends a maximum amount of wear of .100 inch larger than the tubing outside diameter. For example if the coil tubing is 1.500 the maximum inside diameter of the bushings should be 1.600 maximum. We have new bushings that hold up better than the original equipment. The material on these is aluminum bronze and is shown on the chart below. Previous Changes: We have made longer ram change rods that allow more access to change out the packer elements. The T-Seal must be replaced with an o-ring. See Item 34 on drawing DST4-T002 rev. A.

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PRODUCT SERVICE BULLETIN

PSBL-ALL 3.06 EL WIRELINE BOP

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-036-PIB

A

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PSB-036-PIB Rev / A P a g e | 2 of 4 REVISION HISTORY

A

14,June/2011

-

May 1997

Rev

Date (dd.mm.yyyy)

Revision

CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Corrected doc name; Re-format

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PSB-036-PIB Rev / A P a g e | 3 of 4 PSBL-ALL 3.06 EL WIRELINE BOP Product All 3.06", "EL" Wireline BOP’s Discussion It is possible to encounter a situation with a 31/16", "EL" Wireline BOP where the wireline may become trapped in the guides and pinch or cut. We have had one instance where wire was actually cut. Tests have been duplicated in the shop where the guides do not allow the wireline to move into the sealing slot in the ram. The wireline becomes lodged between the wireline guide on one ram and the ram body. The situation occured when the line was pulled to one side of the bore. Since there is no way to determine if the line is centered during operations, all of the wireline valves must be inspected for any sharp edges on the wireline guides. Recommendation Texas Oil Tools recommends that the rams be modified to the drawings shown below to prevent this from occuring. This modification can be done in the field or the rams can be returned to Texas Oil Tools for the necessary modification. The main concern when modifying the guides on the rams is to remove any sharp edges that might catch the wire.

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PRODUCT SERVICE BULLETIN

PSBL-FIELD PAINTING OF TOT EQUIP

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-037-PIB

A

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PSB-037-PIB Rev / A P a g e | 2 of 3 REVISION HISTORY

A

14/June/2011

-

May 1997

Rev

Date (dd.mm.yyyy)

Revision

CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Corrected doc name; Re-format

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PSB-037-PIB Rev / A P a g e | 3 of 3 PSBL-FIELD PAINTING OF TOT EQUIP

Product Painting pressure control equipment Discussion Painting equipment in the field. Recommendation Texas Oil Tools recommends that when the equipment in the field must be painted that the following guidelines be followed: Sand the areas that need to be painted, feathering out the edges. Do not blast any pressure control equipment. Mask off areas that must not be painted. Mask off the weep holes, ring grooves exposed threads, indicator rods, Side Door piston, and any sealing surface. Prime and paint the equipment to your primer, top coat and clear coat specifications.

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PRODUCT SERVICE BULLETIN

PSBL-ALL BOP W/BOOSTER CYLINDER

ALLL BOPs W/ BOOSTER CYLINDER ON SHEAR RAM ACTUATORS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-038-PIB

A

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PSB-038-PIB Rev / A P a g e | 2 of 4 REVISION HISTORY

A

14/June/2011

-

June 1997

Rev

Date (dd.mm.yyyy)

Revision

CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Corrected doc name; Re-format

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PSB-038-PIB Rev / A P a g e | 3 of 4 PSBL-ALL BOP W/BOOSTER CYLINDER Product: All Texas Oil Tools BOP’s equipped with Booster Cylinder Assemblies installed on the Shear Ram Actuators Operational Observation: The possibility exists for partial closure of the Shear Rams if hydraulic pressure is not maintained on the "open" side of the BOP actuators. The check valve on the booster cylinder is mounted on the front of the cylinder, 180E from the grease fitting. The purpose of this valve is to allow the air to escape during closing operations of the shear rams. When opening the rams the possibility exists for this chamber to act as a vacuum. When the hydraulic pressure is released the ram has a tendency to creep closed. When the shear ram moves any significant amount the blades will project into the bore of the BOP. Tools will therefore catch on the tip of the blades and break the blades. Previous recommendations were to maintain hydraulic pressure on the open side of the hydraulic system. However this is not always a practical solution and could lead to other problems. Solution: TOT is recommending that if the shear ram on your booster cylinder has a tendency to move inward after the hydraulic pressure is released, the check valve should be removed. Remove the check valve (TOT part number 7934-8404) and replace it with a breather element (TOT part number 7912-2551). TOT will discontinue the use of the check valves on the Boosters and begin using the breather. The breather will not prevent water or moisture from getting into this chamber; therefore it will be more important now to maintain the grease in this chamber. The correct way to fill this chamber with grease is to close the actuator and then fill the chamber with grease until it starts to come out of the breather. Open the actuator and the grease will now have a coating on all of the surfaces in the chamber.

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PSB-038-PIB Rev / A P a g e | 4 of 4

Locations of the grease fitting and the breather - part number 7912-2551. www.nov.com

PRODUCT SERVICE BULLETIN

PSBL-ALL 3.06 QUAD BOP

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-040-PIB

A

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PSB-040-PIB Rev / A P a g e | 2 of 4 REVISION HISTORY

A

14/June/2011

-

Oct 1997

Rev

Date (dd.mm.yyyy)

Revision

Cp

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Corrected doc name; Ree-format

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PSB-040-PIB Rev / A P a g e | 3 of 4 PSBL-ALL 3.06 QUAD BOP

Product: Texas Oil Tools 3.06 Quad Blowout Preventer

Incident: The heavy wall coiled tubing has expanded and reached a point where our blades are not sufficient. We have had two incidents where the shear blades have broken when trying to cut 1.75" .203 wall and 2.00" .190 wall coiled tubing. We have just finished testing new shear blades on the heavy wall coiled tubing. We have come up with a blade design that will fit into the existing 2.00" ram bodies and will cut the full range of tubing from 1.00" through 2.00" .203 wall. Effective November 01, 1997 all 3.06" quad blowout preventers manufactured by TOT will be supplied with these new rams. The following table is a list of the new assembly numbers and details for the new ram assemblies. Drawing EC3R-T001 shows how to identify if the Ram is a 2.00" ram body or a 1.75" ram body. All the dimensions are the same except for the radius cut for the coiled tubing. The 2.00" blades will fit the 1.75" Rams but it will not cut the 2.00" coiled tubing. Please make sure you have the correct rams when using these blades.

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PRODUCT SERVICE BULLETIN

PSBL-EQUALIZING VALVE SEAT

ALL EL SERIES BOPs EQUALIZING VALVE SEAT

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-005-PIB

A

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PSB-005-PIB Rev / A P a g e | 2 of 4 REVISION HISTORY

A

16/June/2011

-

Feb 1998

Rev

Date (dd.mm.yyyy)

Revision

CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Corrected doc name; Re-format

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PSB-005-PIB Rev / A P a g e | 3 of 4 PSBL-EQUALIZING VALVE SEAT Product Equalizing Valve Seat Reference All "EL" BOPs. Tech Manuals: 1155 & 1156. Discussion The Valve Seat (Part No. 8809-0127) in early style Rams were installed with a NPT pipe thread. With wear, the make up position of the Valve Seat may change. The tapered pipe thread may also be over-torqued, causing difficulty in removal with the small size Allen wrench. Reference Drawing #9005-2293. The design was changed in July 1991 to include a new Valve Seat (Part No. 8809-0147), utilizing a #5 SAE straight thread with O-Ring. This is a shoulder type fitting, eliminating the positioning, over-torquing, and removal problems at assembly . Reference Drawing #9005-2293 rev A. Older model Rams can be machined to convert to the #5 SAE. Since Rams can be moved to various BOPs, the serial number of the BOP can not be relied upon to determine the type of Valve Seat in the Ram. Inspect the Ram to determine if it has an O-Ring on the Valve Seat. Seals Kits must be ordered by specific number to assure that the desired Seals Kit is delivered. Note that Seals Kit part numbers ending in 0 have the old style NPT thread Valve Seat. Seals Kit part numbers ending in 2 have the new type Valve Seat with O-Ring.

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PRODUCT SERVICE BULLETIN

PSBL-3.06 QUAD BOP SHEAR RAMS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-008-PIB

A

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PSB-008-PIB Rev / A P a g e | 2 of 7 REVISION HISTORY

A

14/June/2011

-

Feb 1998

Rev

Date (dd.mm.yyyy)

Revision

CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Corrected doc name; Re-format

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PSB-008-PIB Rev / A P a g e | 3 of 7 PSBL-3.06 QUAD BOP SHEAR RAMS Product 3.06 Quad BOP, Shear Rams, & Booster Cylinders Reference Tech Manual 1184 Discussion The O.D., Wall thickness, and Yield strength, and material used in coiled tubing continues to increase. In many cases it has increased beyond the capacity of the hydraulic system on the coiled tubing unit. Extensive testing on Shearing Coiled Tubing was performed at the Conroe factory. The results have been tabulated and are presented here for your convenience. All tests were conducted at zero well pressure. Separate tests were conducted to confirm the additional pressure required to close the rams under well pressure. In each case, where multiple cuts were made, the highest observed pressure is the one shown. Wireline was placed inside the coiled tubing for many of the cuts. Both 7/32 and 15/32 line was used, in every case the wireline cut at a lower pressure than the tubing. Column #4 records the part number of the Shear Blade used in the test. Part numbers 8011-3535, 8011-3537, 8011-3541 & 8011-3544 are the original style blades furnished with the 3.06 Quad BOP. Part number 8011-5536 and 8011-5545 are the new (1992) Multi-Cut/Multi-Size Shear Blades. The 8011-5545 blade cuts all sizes of wireline and coiled tubing through 1.75" coil tubing. This new blade is to be used only with the 1.75" Shear Ram Bodies, 8011-3644 and 8011-3744. The 8011-5536 blade is a direct Multi-Cut/Multi-Size replacement for the existing 8011-3535, 8011-3537 and 8011-3541 shear blades used to cut 1.00"- 1.50" coil sizes, and fits the existing Shear Ram Bodies, 8011-3642 and 8011-3742. No modification is required. Column #3 records the type of material, 70, 80, or 100,000 yield. As additional samples of the higher strength material, and/or heavier wall thickness, becomes available this tabulation will be amended. Column #5 records the hydraulic pressure required to cut the tubing (with zero well pressure). This is with the original 3" hydraulic cylinders, (no Booster). Column #6 adds the hydraulic pressure required to overcome a well pressure of 5,000psi. Column #7 adds the hydraulic pressure required to overcome the force of 10,000psi well pressure. Column #8 EH34-BC01 Booster, does not require changing any BOP parts, limited hydraulic pressure, not certified for DNV. Hydraulic pressure shown is that required when the well pressure is 10,000 psi.

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PSB-008-PIB Rev / A P a g e | 4 of 7 Column #9 EH34-BC03L, requires changing the Rod with Ram Guide, Piston, and Piston Guide. This conversion is type approved by DNV for service -32C. The hydraulic pressure shown is the pressure required when the well pressure is 10,000 psi. This unit is designed for hydraulic pressure of 3,000 psi W.P. and 4,500 psi test. Column #10 EH34-BC05L, requires changing the Rod with Ram Guide, Piston, and Piston Guide. This conversion is type approved by DNV for service -32C. The hydraulic pressure shown is the pressure required when the well pressure is 10,000 psi. This unit is designed for hydraulic pressure of 1,500 psi W.P. and 3,000 psi test. Refer to the appropriate Tech Manual for operating, ordering information, and part numbers for the BOP Ram Assemblies, and Booster Assemblies. Column #11 lists the net force delivered to the blade; therefore, this force remains constant regardless of changing well pressure. Column #12 lists the cross sectional area of the wall of the coiled tubing. Column #13 F/As indicates the shear stress for the particular pipe/blade combination. The last three columns can be used to approximate the pressure required to cut tubing that is not listed on the chart.

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PSB-008-PIB Rev / A P a g e | 5 of 7

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PSB-008-PIB Rev / A P a g e | 6 of 7 The original Shear Ram Bodies were designed for one size Ram Body to accept three different Shear Blades for 1.00, 1.25 and 1.50 coiled tubing. A different Shear Blade was required for each size coiled tubing. We did not anticipate 1.75 coiled tubing. Designing the Shear Rams for 1.75 coiled tubing required changing the location of the retaining bolt, therefore the blades for 1.00, 1.25 and 1.50 do not fit the Ram Body for 1.75. Ram Bodies for 1.75 are part #8011-3744 R.H. and 8011-3644 L.H. This new Shear Blade 8011-5536 fits the original Ram Body Part #8011-3742 R.H. & 8011-3642 L.H., and cuts the sizes of pipe 1.00, 1.25 or 1.50 with or without wireline. It should not be used to cut 1.75. The new Shear Blade 8011-5545 fits only the Ram Bodies part #8011-3744 R.H. and 8011-3644 L.H. for 1.75, however it is suitable for cutting all sizes tubing 1.00, 1.25, 1.50 and 1.75 with or without wireline. Unless otherwise specifically ordered to the contrary, all 3.06 BOPs shipped after 1 May 92 will be equipped with Ram Bodies 8011-3744 R.H. and 8011-3644 L.H. and Shear Blade 8011-5545. When ordering Shear Blades REMEMBER: Part #8011-5536 cuts 1.00, 1.25 and 1.50, and fits only Ram Bodies 8011-3742 and 8011-3642. Part #8011-5545 cuts 1.00, 1.25, 1.50 and 1.75, and fits only Ram Bodies 8011-3744 and 80113644. In case the part numbers on the Rams are not visible, the following dimension will aid in identification.

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PSB-008-PIB Rev / A P a g e | 7 of 7

CAUTION !!! SHEAR BLADES CAN BE INSTALLED WRONG !!! NOTE: As illustrated, the beveled side of the blade faces away from the head of the Cap Screw. The sharper edge faces toward the head of the Cap Screw, and will be to the center of the Ram Body. Both types of blades cut wireline equally well, and make multiple cuts. Only the Blade changes, the Ram Body does not change. The new blade 8011-5536 cuts all sizes of tubing from 1.00" dia. through 1.50" dia. and replaces the old blades 8011-3535, 8011-3537 and 8011-3541. The new blade 8011-5545 will cut 1.00" dia. through 1.75" dia. tubing, but requires using the 1.75" Shear Rams 8011-3644 and 8011-3744. This blade replaces the old 8011-3544 shear blade. The cut tubing is a star shape, but the O.D. is even less oversized than the older blade cut, resulting in easier fishing. The I.D. is not restricted, permitting circulation.

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PRODUCT SERVICE BULLETIN

PSBL-2.50 QUAD BOP SHEAR RAMS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-009-PIB

A

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PSB-009-PIB Rev / A P a g e | 2 of 7 REVISION HISTORY

A

14/June/2011

-

Feb 1998

Rev

Date (dd.mm.yyyy)

Revision

CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Corrected DOC NAME; Re-format

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PSB-009-PIB Rev / A P a g e | 3 of 7 PSBL-2.50 QUAD BOP SHEAR RAMS Product: 2.50" Quad BOP, Shear Rams & Booster Cylinders Reference: Tech Manuals 1194, 1199, 1137 and 1082 Discussion The O.D., Wall thickness, and Yield strength for material used in coiled tubing continues to increase. In many cases it has increased beyond the capacity of the existing hydraulic system on the coiled tubing unit. Extensive testing on shearing coiled tubing was performed at the Conroe factory. The results of these tests have been tabulated and are presented here for your convenience. All tests were conducted at zero well pressure. Separate tests were conducted to confirm the additional pressure required to close the rams under well pressure. In each case, where multiple cuts were made, the highest observed pressure is the one shown. Wireline was placed inside the coiled tubing for many of the cuts. Either 7/32 or 15/32 line was used, and in every case the wireline cut at a lower pressure than the tubing. Column #4 records the part numbers of the Shear Blades used in the test. Part numbers 80113635, 8011-3637 & 8011-3641 are the radius style blades, utilizing a single cap screw to retain the blade. These blades have been replaced by a single Multi-Cut/Multi-Size shear blade 80115636. The original "V" pocket blades supplied with the 2.50" Quad BOP, 8011-0621 and 80110622, and retained by two flat head screws, were obsoleted Jan.1, 1989 and superseded by the previously mentioned radius style blades. Both of these "V" style blades may be directly replaced by a single Multi-Cut/Multi Size shear blade 8011-0623. (Reference Drawing 8011-0821A, 9205-1991 and 9205-1992, for identification & interchangeability) These new Multi-Cut/Multi-Size blades 8011-5636 and 8011-0623 cut all sizes of wireline and coiled tubing through 1.50" dia. Column #3 records the type of material, 70, 80, or 100,000 psi yield strength. As additional samples of higher strength materials, and/or heavier wall thickness becomes available, this tabulation will be amended. Column #5 records the hydraulic pressure required to cut the tubing (with zero well pressure). This is with the original 2.50" hydraulic cylinders, (no Booster). Column #6 adds the hydraulic pressure required to overcome a well pressure of 5,000psi. Column #7 adds the hydraulic pressure required to overcome the force of 10,000psi well pressure.

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PSB-009-PIB Rev / A P a g e | 4 of 7 Column #8 EH34-BC01 Booster fits either the 2.50 or 3.06 BOP and does not require changing any BOP parts; however, the hydraulic pressure is limited, and not certified for DNV. Hydraulic pressure shown is that required when the well pressure is 10,000 psi. Column #9 EH24-BC03L, requires changing the Rod with Ram Guide, Piston, and Piston Guide. This conversion is type approved by DNV for service to -32C. The hydraulic pressure shown is the pressure required when the well pressure is 10,000 psi. This unit is designed for hydraulic pressure of 3,000 psi W.P. and 4,500 psi test. Column #10 EH24-BC05L, requires changing the Rod with Ram Guide, Piston, and Piston Guide. This conversion is type approved by DNV for service to -32C. The hydraulic pressure shown is the pressure required when the well pressure is 10,000 psi. This unit is designed for hydraulic pressure of 1,500 psi W.P. and 3,000 psi test. Refer to the appropriate Tech Manual for operating, ordering information, and part numbers for the BOP Ram Assemblies, and Booster Assemblies. Column #11 lists the net force delivered to the blade; this force remains constant regardless of changing well pressure. Column #12 lists the cross sectional area of the wall of the coiled tubing. Column #13 F/As indicates the shear stress for the particular pipe blade combination. The last three columns can be used to approximate the pressure required to cut tubing that is not listed on the chart.

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PSB-009-PIB Rev / A P a g e | 5 of 7

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PSB-009-PIB Rev / A P a g e | 6 of 7

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PSB-009-PIB Rev / A P a g e | 7 of 7

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PRODUCT SERVICE BULLETIN

PSBL-LIFT SWIVELS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-018-PIB

C

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PSB-018-PIB Rev / C P a g e | 2 of 4 REVISION HISTORY

C

14/June/2011

Revision

B

Feb 1998

Revision

Rev

Date (dd.mm.yyyy)

CP Reason for issue

CHANGE DESCRIPTION Revision B C

Change Description N/A Corrected doc name; Re-format

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PSB-018-PIB Rev / C P a g e | 3 of 4 PSBL-LIFT SWIVELS Product All Lift Swivels Reference Tech Unit 1188 Discussion Recently, problems and failures of the Lift Swivels used on 63/8" shear seal BOPs have been reported back from the field. These failures occurred on equipment which is understood to have been well maintained, and operated within its defined lifting capacity. Texas Oil Tools will no longer supply these units, and to avoid further problems with the units already in service, we are issuing replacement brackets to those customers who have 7958-3007 Lift Swivels to allow them to refurbish the Lift Swivels in the field. The refurbishment involves replacing swivel block with a stronger style of bracket which is load tested. The disassembly and rebuilding is accomplished as follows (refer to attached drawing): 1. Remove retainer. 2. Replace swivel blocks with bracket supplied. 3. Lock the components with the retainer. 4. Use a 3/4" pin shackle with the assembly.

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PSB-018-PIB Rev / C P a g e | 4 of 4

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PRODUCT SERVICE BULLETIN

PSBL-2.00 HAMMER UNION CK VALVE

2.00” HAMMER UNION CHECK VALVE

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-019-PIB

B

www.nov.com

PSB-019-PIB Rev / B P a g e | 2 of 4 REVISION HISTORY

B

14/June/2011

Revision

A

Feb 1998

Revision

Rev

Date (dd.mm.yyyy)

CP Reason for issue

CHANGE DESCRIPTION Revision A B

Change Description N/A Corrected doc name; Re-format

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PSB-019-PIB Rev / B P a g e | 3 of 4 PSBL-2.00 HAMMER UNION CK VALVE Product 2" Hammer Union Check Valve Reference Tech Unit 1206 Discussion It has come to Texas Oil Tool’s attention that during continued field operation of this equipment, certain minor problems have occurred. Texas Oil Tools wishes to inform customers of the design modifications initiated to rectify the problems and prevent their recurrence. Problems The problems which have occurred with this equipment are as follows: 1. The threads on the pin sub (item 2 on layout 9424-1820, attached) have suffered from pitting and corrosion, due either to failure of the seal or water entrapped after external high pressure washing. 2. The internal hexagons in the vent valve stems have been ringed and made inoperable. Design Modifications The design modifications initiated to rectify the operating problems have been made while retaining the same overall configuration and equipment interchangeability. Refer to the layout attached. Change of seal type - The seals in both the pin sub and seal sleeve (4) have been replaced by orings (21), suitable for H2S Service. The valve body (1) retains the same seal bore diameter and tolerances, thereby permitting continued use of the original design. The only minor modification in the valve body is a 0.1" diameter weep-hole introduced to bleed away pressure in the event of seal failure. As an additional feature a dust collar (11) and o-ring (23) have been introduced to prevent or significantly reduce the ingress of water from high pressure hosing. Vent Valve Modifications In order to prevent continued degradation of the socket in vent valve stems, the design has been modified while retaining the material and heat treatment procedures.

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PSB-019-PIB Rev / B P a g e | 4 of 4 In the new vent valve stem (8), an external hexagonal drive is located into a stainless steel vent valve handle (9), both of which are secured by an internal socket head grubscrew (18). The addition of the handle to the vent valve increases the overall height by 0.6" in the closed position. General The operation of the 2" Hammer Union Check Valve remains unchanged after the design modifications. The design changes are compatible with the original assembly and the parts are interchangeable. Although it is anticipated that the equipment’s operation will be better for the design changes, maintenance should be performed regularly. All sealing faces and perishable items should be checked and replaced as necessary, thereby improving the longevity of the equipment. New seals kits (FU14-SK02 and EVA4-S000) and tool kit (FU14-SKC2) will be available through our sales offices for refurbishment of the valves. All the design changes to the 2" Hammer Union Check Valve are documented in the Tech Unit 1245, copies of which are available through Texas Oil Tools Sales offices.

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PRODUCT SERVICE BULLETIN

PSBL-EQUALIZING VALVE BONNET

EQUALIZING VALVE BONNET P/N 78081422L

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-020-PIB

B

www.nov.com

PSB-020-PIB Rev / B P a g e | 2 of 3 REVISION HISTORY

B

14/June/2011

Revision

A

Feb 1998

Revision

Rev

Date (dd.mm.yyyy)

CP Reason for issue

CHANGE DESCRIPTION Revision A B

Change Description N/A Corrected doc name; Re-format

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JTM

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PSB-020-PIB Rev / B P a g e | 3 of 3 PSBL-EQUALIZING VALVE BONNET Product Equalizing Valve Bonnet (P/N 7808-1422L) Reference All BOPs Discussion Recently we have encountered what we believe to be a one-off occurrence where the internal thread of an Equalizing Valve Bonnet was tapped all the way through. This meant that the equalizing valve stem could be screwed right out of the assembled valve, this would then have allowed well bore fluids to escape to the atmosphere, (fortunately the problem was detected during assembly and no harm was done). As stated above, we believe that this is a one-off occurrence and have taken the necessary steps to prevent a repeat, however, we feel that all users of the equipment should be aware of the potential risk and advise them to inspect all equipment in the field, as well as any stock they might be carrying. The sketch below illustrates the problem area and how it should be threaded. Note: Most valves will have marks from the tap. If you are uncertain as to whether the bonnet is acceptable or not then try screwing a valve stem (part no. 7808-1426D) through the bonnet. If any defective bonnets are found, please contact Texas Oil Tools directly.

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PRODUCT SERVICE BULLETIN

PSBL-2.50 QUAD SLIP RAM GUIDE

2.50” QUAD BOP SLIP RAM GUIDE FOR 1.50” COILED TUBING

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-021-PIB

B

www.nov.com

PSB-021-PIB Rev / B P a g e | 2 of 3 REVISION HISTORY

B

14/June/2011

Revision

A

Feb 1998

Revision

Rev

Date (dd.mm.yyyy)

CP Reason for issue

CHANGE DESCRIPTION Revision A B

Change Description N/A Corrected doc name; Re-format

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PSB-021-PIB Rev / B P a g e | 3 of 3 PSBL-2.50 QUAD SLIP RAM GUIDE Product 2.50" Quad BOP, Slip Ram Guide for 1.50" Tubing Reference Tech-1077-MAN Discussion Recently a customer reported that the slip rams in a 21/2" quad BOP were found to have crimped the tubing. This occurred when the lip rams were closed before the pipe rams, and the slip ram guide failed to guide the tubing into the slip. The slip guide was observed to be worn and slightly deformed. An improved guide is available, as a simple bolt on replacement part, to avoid any risk of crimping the tubing. This improved guide has a much longer guide arm on it, which gives much better guidance/centralization of the tubing. Recommendation 1. Pipe rams are closed prior to slip rams. 2. All slip ram guides are inspected and replaced with the improved guide. Part No. for the new guide is 8010-2726 Rev. b (1.50" coiled tubing) Part No. for the old superceded guide is 8010-2726 (no Rev. level stamped) Note: Part Nos. are clearly stamped on the parts. Note: All new units shipped after 1995 have the guide and slip as an integral part. You should be using the new slip and guide assembly.

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PRODUCT SERVICE BULLETIN

PSBL-3.06 HYDRACONN LOCK DOGS

3.06” HYDRACONN LOCK DOGS P/N 91041025 B OR L

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-023-PIB

B

www.nov.com

PSB-023-PIB Rev / B P a g e | 2 of 3 REVISION HISTORY

B

14/June/2011

Revision

A

Feb 1998

Revision

Rev

Date (dd.mm.yyyy)

CP Reason for issue

CHANGE DESCRIPTION Revision A B

Change Description N/A Corrected doc name; Re-format

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Psb-023-PIB Rev / B P a g e | 3 of 3 PSBL-3.06 HYDRACONN LOCK DOGS Product 3.06" Hydraconns (Lock Dogs p/n 9104-1025, B or L) Reference Tech Units 1167A & 1246 Discussion As part of Texas Oil Tools ongoing design review process, a detailed finite element analysis has been carried out on the lock dogs in the 3.06" Hydraconn range. The analysis has highlighted potential areas of concern with the design of this component. Accordingly we are free-issuing all users of 3.06" Hydraconns with a re-designed set of lock dogs manufactured in a higher strength material. At the time of issuing the replacement parts, Texas Oil Tools will provide documentation to allow the new dogs to be fitted in the field along with the procedure to maintain the certification of this equipment. Also instructions will be issued regarding return of the old components to prevent their possible re-use. This applies only to units supplied before August 1995. Please contact your TOT salesman for further information.

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PRODUCT SERVICE BULLETIN

PSBL-5.12 HYDRACONN LOCK DOGS

5.12” HYDRACONN LOCK DOGS P/N 91061725 B OR L

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-025-PIB

B

www.nov.com

PSB-025-PIB Rev / B P a g e | 2 of 3 REVISION HISTORY

B

14/June/2011

Revision

A

Feb 1998

Revision

Rev

Date (dd.mm.yyyy)

CP Reason for issue

CHANGE DESCRIPTION Revision A B

Change Description N/A Corrected doc title; Re-format

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PSB-025-PIB Rev / B P a g e | 3 of 3 PSBL-5.12 HYDRACONN LOCK DOGS Product 5.12" Hydraconns (Lock Dogs p/n 9106-1725, B or L) Reference Tech Units 1239C & 1285A Discussion As part of Texas Oil Tools ongoing design review process, a detailed finite element analysis has been carried out on the lock dogs in the 5.12" Hydraconn range. The analysis has highlighted potential areas of concern with the design of this component. Accordingly we are free-issuing all users of 5.12" Hydraconns with a re-designed set of lock dogs manufactured in a higher strength material. At the time of issuing the replacement parts, Texas Oil Tools will provide documentation to allow the new dogs to be fitted in the field along with the procedure to maintain the certification of this equipment. Also instructions will be issued regarding return of the old components to prevent their possible re-use. This applies only to units supplied before August 1995. Please contact your TOT salesman for further information.

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PRODUCT SERVICE BULLETIN

PSBL-4.06 HYDRACONN LOCK DOGS

4.06” HYDRACONN LOCK DOGS P/N 91061025 B OR L

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-026-PIB

B

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B

20/June/2011

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A

Feb 1998

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PSB-026-PIB Rev / B P a g e | 3 of 3 Product 4.06" Hydraconns (Lock Dogs p/n 9106-1025, B or L) Reference Tech Unit 1180A & 1173A Discussion Recently a number of cases of 4.06" Hydraconns disconnecting while under pressure have been reported to Texas Oil Tools. It appears that the reason for this occurrence has been that the units were not properly connected in the first place. This can be partially attributed to the return springs not having sufficient reserve capacity to fully return the sleeve and hence lock the dogs in place, this situation is accentuated by surface corrosion and grime building up in the moving parts leading to increased friction. The other factor related these disconnections is that when supplied the Hydraconns have a visual arrangement which is painted in contrasting colors so that the operator can clearly see whether the sleeve has traveled fully or not. On the units which have been returned because they have disconnected the contrasting section has been oversprayed making it very difficult to assess at a distance how far the indicator has moved. To address these points we recommend as follows: 1. Texas Oil Tools will free-issue new, higher strength springs to all users. 2. Users are reminded that regular maintenance and lubrication of their Hydraconn is essential in order to keep all moving parts operating freely. 3. The coloring system on the visual indicator system must be maintained. 4. Operators must be sufficiently familiar with the equipment and be in a position to be able to observe the visual indicator so as to see whether the Hydraconn is fully latched or not. This applies only to units supplied before August 1995. Please contact your TOT salesman for further information.

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PRODUCT SERVICE BULLETIN

PSBL-3.06 4.06 5.12 HYDRACONN

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-027-PIB

B

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B

20/June/2011

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A

Feb 1998

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PSB-027-PIB Rev / B P a g e | 3 of 6 Product 3.06", 4.06", 5.12" Hydraconns Reference Tech Unit 1167A, 1246, 1173A, 1180A, 1229B, 1285A Discussion Recently reported instances of Hydraconns unlatching while under pressure has highlighted a potential risk in the use of the equipment. The most likely cause for the Hydraconns unlatching is that they were not properly connected before pressure was applied. It is therefore necessary that they operators fully understand the operation of the Hydraconns indicator system and use this to check that the stinger is fully latched before any hydrostatic pressure is applied. Attached are a set of drawings which depict the indicator system for each size of hydraconn. The operator must be fully familiar with these in addition, we recommend that the following check list trouble shooting guide is followed. 1. Prior to rig-up the hydraconn should be functioned both with and without a stinger installed. At this time the operator must satisfy himself that the sleeve travels fully to lock the dogs in place. 2. If the hydraconn appears no to latch, there are two potential reasons for this happening. (i) Debris/corrosion has built up on the moving parts within the hydraconn to the extent that they springs are not to overcome the friction force. In this case the unit must be stripped, cleaned and inspected. (ii) There may be insufficient weight acting on the stinger to allow the dogs/sleeve to fully latch. This problem is especially prevalent when using a lift/test cap since this has very little weight (100 - 150 lbs. Dependant on the size of hydraconn) but obviously the consequences of this cap blowing-out due to improper latching are extremely hazardous. 3. Once the hydraconn is installed in the stack, always double check that it has fully latched after each reconnection. Remember: The hydraconn is intended to allow quick connection/disconnection of the stack, but like all pressure control equipment, it must be thoroughly checked and maintained.

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PRODUCT SERVICE BULLETIN

PSBL-3.00 COMBI BOP HYD CAPS

3.00” COMBI BOP HYDRAULIG CAPS P/N 8801-1422 & 8801-1422G

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-033-PIB

B

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PSB-033-PIB Rev / B P a g e | 2 of 4 REVISION HISTORY

B

20/June/2011

Revision

A

Feb 1998

Revision

Rev

Date (dd.mm.yyyy)

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CHANGE DESCRIPTION Revision A B

Change Description N/A Corrected doc name; Re-format

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PSB-033-PIB Rev / B P a g e | 3 of 4 Product All 3" Combi BOPs Reference Tech Unit 1127B, 1213E (Hydraulic Cap p/n 8801-1422 and 8801-1422G) Discussion In normal operation with the rams in place, the BOP will operate correctly. A potential problem does exist however, when the BOP is being serviced off the well. In normal operation when the actuators are hydraulically retracted to bring the rams to the "open" position, the actuator stops moving when the ram bottoms out in the back of the bonnet. At this point the piston within the actuator has not bottomed out against the hydraulic cap/sleeve nut. This is as intended. When the BOP is being serviced, it may be that the actuators will be stroked with the rams removed. This then means that since the rams will not stop the actuator movement by bottoming out in the bonnet, the actuator will retract slightly further. Unfortunately it has been observed that the indicator will actually bottom out in the hydraulic cap before the piston contacts the hydraulic cap/sleeve nut. The force which can be generated by the piston is sufficient to bend the indicator rod in this situation. Note that this only affects these BOPs when they are being stroked with the rams removed. Remedy There are two solutions: 1. Never stroke the actuator even during servicing without the rams being installed. 2. The hydraulic caps can be simply modified (in situ on the assembled BOP) to extend the clearance hole for the indicator rod. A drawing is attached. Note that this problem was first noticed on new BOPs supplied during March/April 1996 which were all then modified as per 2. as were all units shipped after June 1996. Also, the hydraulic cap drawing has now been revised so that any new equipment will not be affected.

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PRODUCT SERVICE BULLETIN

PSBL-4.06 10K QUAD/COMBI SLIP

All 4.06” 10,000 PSI WORKING PRESSURE QUAD AND COMBI BOP SLIP RAM ASSEMBLIES

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-034-PIB

A

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PSB-034-PIB Rev / A P a g e | 2 of 8 REVISION HISTORY

A

20/June/2011

Revision

-

Feb 1998

Revision

Rev

Date (dd.mm.yyyy)

CP N/A Reason for issue

CHANGE DESCRIPTION Revision A

Change Description N/A Correct doc name; Re-format

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PSB-034-PIB Rev / A P a g e | 3 of 8 Product All Slip Ram Assemblies 4.06", 10K, Quad and Combi BOPs Reference Tech Units 1128B, 1185, 1211, 1227, 1231 Discussion The slips used in 4.06" Quad and Combi BOPs have been redesigned and improved over time, and the inevitable part number changes have led to confusion. The situation with respect to interchangeability of parts has also until how been unclear. This Product Service Bulletin is intended to clarify this situation. This bulletin covers slip ram assemblies for both 4.06" Quad and Combi BOPs since many of the components are common to both. The non-deforming (N.D.) slip ram assemblies are currently the preferred option offered by Texas Oil Tools. These N.D. slip ram assemblies are therefore the items which will be held in stock, all other older options will only be manufactured to order. N.D. slips for a 4.06" quad are detailed on page 2 and for the 4.06" Combis are detailed on page 3. This bulletin also contains historical reference information on all previous 4.06" quad slip assemblies on page 4 and on all previous Combi slip assemblies on page 5. This PSB supercedes PSB 13. The main difference between a 4.06" Combi BOP and a 4.06" Quad BOP which affects the slip ram assemblies is that the Combi BOP uses a ram guide stud to stop ram rotation whereas the quad uses guidance within the actuator.. The Combi rams therefore have a slot in the bottom of the ram. Non-Deforming Slips, Interrupted Tooth Slips and Original Slips The original 4.06" slip which had complete, almost semi-circular teeth and could leave unacceptable teeth marks on the tubing, evolved some years ago with the improvement to the interrupted tooth (or pyramid tooth) style of inserts. These reduced the damage effect on the tubing form slip marks. Recently a new generation of slip has been developed, the non-deforming (N.D.) slip. This uses pyramid style teeth but is much longer and therefore has a much larger contact area. This extended contact slip insert is designed to minimize deformation of thin wall coiled tubing when operating at higher BOP hydraulic control pressures. This might be the case when running a tapered string that would require setting the hydraulic pressure higher to cut the heavy wall pipe, but the higher pressure with the previous type slip inserts could excessively deform the coiled tubing. N.D. slips were initially introduced for 4.06" Quad BOPs via Product Service Bulletin PSB-013 Rev. B, in February 1995. The PSB covered only Quad BOPs and detailed the slips required for retrofitting to existing slip ram bodies using an adapter on the lower sizes (up to 1.75"). This is still acceptable and can also now be done on 4.06" Combi BOPs. PSB-013 also covered N.D. slip ram assemblies for Quad BOPs for 2" to 27/8" tubing using a complete new ram assembly. These ram assemblies are still valid and included in the lists of assemblies on page 2.

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PRODUCT SERVICE BULLETIN

PSBL-RAM CREEP RESIDUAL PRESSURE

ALL BOPS EQUIPPED WITH BOOSTER CYLINDER ASSEMBLIES ON THE SHEAR ACTUATOR: RAM CREEP DUE TO RESIDUAL PRESSURE

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-022-PIB

A

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PSB-022-PIB Rev / A P a g e | 2 of 3 REVISION HISTORY

A

20/June/2011

Revision

-

Mar 1998

Revision

Rev

Date (dd.mm.yyyy)

CP N/A Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Corrected doc name; Re-format

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PSB-022-PIB Rev / A P a g e | 3 of 3 Product All BOP’s equipped with Booster Cylinder Assemblies installed on the Shear Ram Actuators. Reference Tech Manuals 1127,1128, 1184B, 1185, 1211, 1213, 1218, 1227, 1237, 1248, 1310, 1323 Discussion The possibility exists for partial closure of the BOP Rams if hydraulic pressure is not maintained on the “open” side of the BOP actuators by locking the BOP hydraulic control valve in the “Open BOP Rams” position. Residual hydraulic pressure may be trapped on either side of the BOP actuator piston when shifting a 4-way hydraulic control valve, regulating the Rams, to the “Neutral” position. This residual pressure and/or any leakage in the 4-way valve, creates a differential force on the “Close Ram” side due to the additional booster piston. This trapped pressure can cause the rams to creep towards the “closed” position and partially restrict the vertical wellbore through the BOP Solution As a safety precaution, all BOP control valves should be locked in the “Open BOP Rams” position at all times during coiled tubing operations until it becomes necessary to shut the rams to shear tubing, or to seal the wellbore annulus. During closure of the rams, the control valves should be locked in the “Close BOP Rams” position as well, to assure continued closure force on the rams maintaining sealing integrity during wellbore pressure fluctuations.

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PRODUCT SERVICE BULLETIN

PSBL-4.06 10K EH/EC QUAD BOP

ALL 4.06” 10K EH & EC SERIES QUAD BOPS CONTAINING PISTON RODS WITH GUIDE PIN P/N 8412-2843

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-030-PIB

B

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PSB-030-PIB Rev / B P a g e | 2 of 3 REVISION HISTORY

B

20/June/2011

Revision

A

Mar 1998

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Date (dd.mm.yyyy)

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Change Description N/A Corrected doc name; Re-format

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PSB-030-PIB Rev / B P a g e | 3 of 3 Product All 4.06" 10,000 PSI Texas Oil Tools Model EH and EC Quad BOPs containing Piston Rods with Guides, part number 8412-2843.

Reference Tech Manuals: 1185 & 1211 Discussion Recently, a customer reported two incidents involving their 4.06" 10M Quad BOP in which the Piston Rods with Guides fractured during operations in a particularly corrosive field. Extensive metallurgical and atmospheric SSC testing has been performed on samples taken from the fractured parts which confirm the components failed due to sulfide stress cracking. This design has performed well in various hostile environments for over twelve years, with no previously reported failures. This case may be an isolated incident unique to the geographical area involved but, it should be noted that the right combination of temperature, low PH level, and high percentage concentrations of H2S and chlorides may attack certain NACE approved materials, precipitating an SSC failure. Solution: The 8412-2843 Piston Rod with Guide has been redesigned as a one-piece component, compared to the previous two-piece, press fit rod it replaces. Due to the one-piece configuration, the stress levels in the rod have been reduced approximately 55%, improving it's resistance to SSC. As part of Drexel's commitment to quality assurance, the 8412-2843 Rods with Guides may be replaced, at the customer's discretion, with the newer design piston rods. The new one-piece piston rods may be ordered as part number 8412-2841. To those customers with 4.06" Model EC or EH BOPs less than two years old, the replacement rods will be issued to them by placing an order for the required number of replacements from Drexel. Once the BOPs have been retrofitted with the new replacement rods, the existing 84122843 stainless rods should be sent back to Drexel for credit. Return of the older design rods, with the serial numbers of the units from which they were removed, will be recorded to verify that all original 8412-2843 Rods with Guides have been removed from service. Additionally, in cases where the BOP equipment may be exposed to severely hostile well environments, a one-piece piston rod manufactured from Inconel 718 is available, part number 8412-2839. These piston rods would be the preferred alternative for use in highly corrosive environments containing high concentrations of H2S in combination with chlorides and/or low PH levels. Existing two-piece rod with guide - Part number 8412-2843 New one-piece replacement rod - Part number 8412-2841 One-piece Inconel replacement rod - Part number 8412-2839 www.nov.com

PRODUCT SERVICE BULLETIN

PSBL-JIC2/JIC3 INJECTOR CONN

ALL JIC2 & JIC3 INJECTOR CONNECTORS FOR USE ON 3.06” & 4.06” 10K & 15K STRIPPER PACKERS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-031-PIB

B

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PSB-031-PIB Rev / B P a g e | 2 of 4 REVISION HISTORY

B

20/June/2011

Revision

A

Mar 1998

Revision

Rev

Date (dd.mm.yyyy)

CP N/A Reason for issue

CHANGE DESCRIPTION Revision A B

Change Description N/A Corrected doc name; Re-format

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PSB-031-PIB Rev / B P a g e | 3 of 4 Product All Model JIC2 and JIC3 Injector Connectors for use on 3.06" and 4.06", 10M and 15M, Stripper to Injector Combinations. Reference Tech Manual: 1282C Discussion Recently, a customer reported a failure on a JIC2-RS00 assembly whereafter previous repeated successful use, the connector dropped a stack of equipment when it appeared that it had connected properly. After simulating field latching conditions in the workshops at TOT Conroe, a similar connector was latched and unlatched in methods which would prevent correct connection. Firstly, the tool was latched with spacers on one side forcing the tool to be partially latched on one side and with only the dogs gripping the lower flange OD on the other side. Secondly, the tool was latched with spacers all around forcing all the dogs to be only gripping on the lower flange OD. In both cases the connector was able to pick-up a weight of 1500lbs, and may have managed more had we not ended the test. We concluded from this test that this is what happened in the recent field failure. Solution A new visual position indicator has been added to the housing of the connector that will show very clearly when the connector is latched or unlatched. When it is latched properly, the indicator is flush with the OD. When it is not latched properly, the indicator will be positioned between 45-90 degrees from the OD. See attached drawing JIC3-Q003 for details. In operation, all customers should include a check of the the indicator position prior to continuing rig-up. All assemblies should be returned to TOT Conroe for modification at each customers earliest convenience. In the meantime, great care and caution should be employed to try and ensure the connector is properly latched each time it is operated in the field. Once the units are submitted for modification, these can be returned to service within one week of receipt.

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PRODUCT SERVICE BULLETIN

PSBL-2.50 10K DS74 SIDEDOOR S/P

ALL 2.50” 10,000 PSI WORKING PRESSURE DS74 SIDEDOOR STRIPER PACKERS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-039-PIB

A

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PSB-039-PIB Rev / A P a g e | 2 of 4 REVISION HISTORY

A

20/June/2011

-

Mar 1998

Rev

Date (dd.mm.yyyy)

Revision

CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Corrected doc name; Re-format

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PSB-039-PIB Rev / A P a g e | 3 of 4 Product: All Texas Oil Tools Side Door Stripper Packers 2.50 10M DS74 Operational Observation: An o-ring failed during a function test. This occurred after the Stripper Packer had been left idle for a few months. The o-ring that failed was exposed to hydraulic pressure on one side and was opened to atmosphere on the other side. The side opened to the atmosphere was dry and caused the o-ring to stick to it. This made the o-ring roll until it eventually ripped in two or started to leak. Solution: Texas Oil Tools has replaced the o-ring with a T-seal. The T-seal has a lower coefficient of friction and a different cross section. The cross section will prevent the seal from rolling and causing any problems. The T-seals are slightly harder to assemble because of the two back-up rings however, we feel this is an improvement to the tool that will prevent any similar leaks. The new seal will be included in all of the new equipment and in all of the seal kits.

Cross section of the T-seal with the back-up rings. The back-up rings are split and one fits on either side of the seal.

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PRODUCT SERVICE BULLETIN

PSBL-7.06 5K EG SLIP RAM ASSY

ALL 7.06” 5,000 PSI WORKING PRESSURE EG SERIES BOP: SLIP RAM ASSEMBLY INSERTS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-044-PIB

A

www.nov.com

PSB-044-PIB Rev / A P a g e | 2 of 3 REVISION HISTORY

A

20/June/2011

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Nov 1998

Rev

Date (dd.mm.yyyy)

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Change Description Initial Release Corrected doc name; Re-format

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PSB-044-PIB Rev / A P a g e | 3 of 3 Product 7.06" "EG” Blowout Preventer Pipe Slip Ram Assembly Slip Inserts Reference Tech Manuals 1331, 1337, 1339 Operation Texas Oil Tools has identified a batch of pipe slip inserts for the Pipe slip ram that is not of the quality it was designed to be. The slip inserts may not appear to be of inferior quality from looking at them but they may crack when put into service. Please review your current inventory of the following parts with the trace number listed below. DO NOT use these parts.

9209-7451 9209-7461 9209-7473 9209-7479

Pipe Slip Insert 2.00 Pipe Slip Insert 2.375 Pipe Slip Insert 2.875 Pipe Slip Insert 3.125

Any of the above parts with trace number 69654. If you have any of these parts please contact Texas Oil Tools. We will replace these parts with new ones.

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PRODUCT SERVICE BULLETIN

PSBL-3.06 10K EH/EC QUAD BOP

ALL 3.06” 10,000 PSI WORKING PRESSURE EH & EC SERIES QUAD BOPS WITH NEW WEDGE SLIP DESIGN

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-041-PIB

A

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A

20/June/2011

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Date (dd.mm.yyyy)

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Change Description Initial Release Corrected doc name; Re-format

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D60100XXXX-PIB-001 Rev / 02 P a g e | 3 of X Product Texas Oil Tools 3.06" Quad Blowout Preventer Reference Tech Manuals 1184B, 1218 Subject Matter Slip ram assemblies for coiled tubing operations: We have undergone several months of design and testing to come up with a new design slip that will perform under any given conditions. What has transpired from our testing is a new “Wedge” slip insert design. The “Wedge” slip insert is a bi-directional slip designed to maximize the gripping area and bite into the tubing as weight is applied. The “Wedge” design has tapers that force the slips into the coiled tubing. The test results just completed on the range of 1.25 through 2.00 QT-1000 coiled tubing. The BOP and slips performed excellently and held the coiled tubing after simulation of a loss of hydraulic pressure. The BOP was closed with 1500 psi hydraulic pressure and the manual locks were shut. The hydraulic pressure was then bled to zero and a pull test was done on the coiled tubing. The tests were conducted to at least 90% of the yield strength of the coiled tubing with no slippage. Holding the coiled tubing is a crucial key to successful coiled tubing operations. We recommend that the manual locks be closed on the BOP when the slips are set. This will ensure they will hold in the event of a loss of hydraulic pressure. The following should serve as a checklist for inspecting and using the TOT slip rams. A. Make sure the slips are in good condition; .03 flat on the gripping edge or crest of the teeth on the slip insert is insufficient. The insert must be replaced. B. The slips must be closed with hydraulic pressure to ensure they will hold, minimum hydraulic pressure required is 1500psi. C. Manually lock the slips by turning the handwheel closed and locking it in with a pipe wrench. If these three steps are followed when you are using the slips and maintaining your BOP, you can feel safe they will hold as intended. Safety is the most important issue, we suggest that you use a backup set of slips above the stripper packer for another means of preventing a failure. Parts Breakdown: The following table is a list of the new ram assemblies for the 3.06 Quad. The new “Wedge” slips are currently available from Texas Oil Tools. We highly recommend you use these ram assemblies on any unit that is running QT-1000. We are planning to make this new ram our standard in the near future. We are currently building stock to meet all of your needs.

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PRODUCT SERVICE BULLETIN

PSBL-7.06 ANNULAR BOP PISTON

ALL 7.06” 5,000 PSI WORKING PRESSURE ANNULAR BOP: PISTON REMOVAL

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-042-PIB

A

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Change Description Initial Release Corrected doc name; Re-format

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PSB-042-PIB Rev / A P a g e | 3 of 4 Product: Texas Oil Tools 7.06, 5,000psi Annular Blowout Preventer Incident: We have had an incident reported concerning the removal of the piston in the Annular Blowout Preventer. If the top is removed from the BOP and the piston is pumped up using hydraulic pressure the potential exists to lock the piston up. This happens when the piston seal comes out of the seal bore, not enough bearing area remains in the body of the tool to hold the piston straight. The piston may cock and get wedged in the body. When this happens it is very difficult to remove the piston. The piston must first be straightened and then pulled out of the body. Texas Oil Tools feels this may happen again and we would like to prevent this from happening. We have developed a piston removal and installation tool designed to assist in maneuvering the piston in and out of the body. Operation of the Tool: To use this tool the upper housing, packer, and guide must be removed from the BOP. The tool is put in place where the guide normally is installed.

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PRODUCT SERVICE BULLETIN

PSBL-4.06 15K COMBI PIPE SLIP

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-045-PIB

A

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A

20/June/2011

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Date (dd.mm.yyyy)

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PSB-045-PIB Rev / A P a g e | 3 of 3 Product: Texas Oil Tools 4.06” 15M Pipe Slip Ram Assembly

Incident: We have had a report on the pipe slip ram assembly used in our 4.06” 15M Combi BOP that the pipe slip front seals are not holding up as long as they should. The front seal has deflected after repetitive tests at 15,000psi. The plates for the front seal have a section that is supported by the guide from the opposing ram. This section of the plate, in some cases, has deflected. We have redesigned the front seal to add more strength to the seal plates. If you have any front seals received prior to January 1st 1999, they have the potential of not performing to our standards. Please contact your TOT representative for immediate replacements. The front seals in question are: 8505-5837 8505-5841 8505-5844 8505-5851

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Front seal 1.25 Front seal 1.50 Front seal 1.75 Front seal 2.00

PRODUCT SERVICE BULLETIN

PSBL-4.06 10K SIDEDOOR S/P

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-046-PIB

01

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A

27/June/2011

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Oct 1999

Rev

Date (dd.mm.yyyy)

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Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Correct doc name; Re-format

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PSB-046-PIBRev / A P a g e | 3 of 3 PSBL-4.06 10K SIDEDOOR S/P

Product: Texas Oil Tools 4.06” 10M Side Door Stripper Packer Incident: We have had repeated incidents of the main packer piston o-ring rolling during operation and not functioning properly. When this o-ring fails the Stripper Packer becomes inoperable. The piston will not move up or down because hydraulic pressure bypasses the o-ring. Solution: Texas Oil Tools has replaced the o-ring with a new seal, part number 7951-3A16. The new seal has a different cross section. The cross section will prevent the seal from rolling and causing any problems. The new seal is slightly harder to install due to the harder outer ring however, we feel this is an improvement to the tool that will prevent any similar failures. The new seal will be included in all of the new equipment and in all of the seal kits.

Please contact your Texas Oil Tools representative, if you have had a similar incident. Please quote the serial number of the Stripper Packer on any correspondence.

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PRODUCT SERVICE BULLETIN

PSBL-2.50/4.06 TANDEM 7 S/D S/P

2.50” & 4.06” TANDEM AND SIDEDOOR STRIPPER PACKERS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-017-PIB

E

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PSB-017-PIB Rev / D P a g e | 2 of 21 REVISION HISTORY

E

27/June/2011

Revision

D

Feb 2000

Revision

Rev

Date (dd.mm.yyyy)

CP N/A Reason for issue

CHANGE DESCRIPTION Revision D E

Change Description N/A Corrected doc name; Re-format

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PAB-017-PIB Rev / E P a g e | 3 of 21 PSBL-2.50/4.06 TANDEM 7 S/D S/P Product 2.50" and 4.06" Side Door and Tandem Side Door Stripper Packers Reference Tech Manuals 1170, 1181B, 1182, 1183B, 1207, 1223, 1233, 1321A Discussion The possibility exists that an operator may apply excessive hydraulic operating pressure to the pack-off, that could result in the collapse of the coiled tubing, even with zero wellhead pressure. A reported incidence of coiled tubing collapse during pressure tests has warranted notification of possible circumstances where high wellhead and hydraulic pressures may cause the tubing to collapse in the Stripper Packer. The circumstances related to this incident involves a 2.50" 10M Model DS74 Side Door Stripper and DT74 Tandem Side Door Stripper, both dressed for 1.75" QT 800, .109" wall coiled tubing. With a lubricator test pressure of 5,000 psi, approximately 2500 psi hydraulic pressure was applied to the upper pack-off. After completion of a successful test period, the 5,000 psi test pressure was dumped, creating a pressure imbalance and ensuing tubing collapse at the upper packer contact area. It was concluded that the high hydraulic pack-off pressure created an excessive external force that resulted in the collapse of the tubing. Solution An extensive testing program was conducted at the Drexel-Conroe plant replicating the same operational criteria as the aforementioned incident. These tests were conducted on a variety of tubing sizes and wall thicknesses using several qualifying parameters including, tubing ovality, external pressure and hydraulic pack-off pressure. The results of these tests have yielded enough preliminary data to assimilate a conservative formula for determining an acceptable limit to the maximum hydraulic pressure that should be applied to the pack-off. This data is based on the published collapse pressures of QT-700 tubing, and would only apply to coiled tubing that still meets the tubing manufacturer's minimum quality requirements, with a maximum ovality of 5%. The following typical graph is based on these conditions, and the following formula. External Well PSI/Area Ratio of Packoff from Tech Manual = Min. Hyd. PSI to Packoff Internal C.T. PSI + Rated Collapse PSI) 0.9 Safety Factor = Max. Hyd. PSI to Packoff Area Ratio of Pack-off from Tech Manual

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PSB-017-PIB Rev / D P a g e | 4 of 21 The accompanying typical graph is for illustration and to be used as reference only. The operator should determine the maximum force to apply to the stripper based on the individual conditions related to each job. In each case, applying only the minimum hydraulic pressure to pack-off, and reducing the hydraulic pressure as well/test pressure is relieved, will reduce the possibility of collapsing the coiled tubing. It should be noted that tubing tension is also an important variable that should be taken into account when determining maximum hydraulic pressure.

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PRODUCT SERVICE BULLETIN

PSB-ALL LOCKING COLLARS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-043-PIB

C

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PSB-043-PIB Rev / C P a g e | 2 of 5 REVISION HISTORY

C

27/June/2011

Revision

B

May 2000

Revision

Rev

Date (dd.mm.yyyy)

CP N/A Reason for issue

CHANGE DESCRIPTION Revision B C

Change Description N/A Correct doc name; Re-format

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PSB-043-PIB Rev / c P a g e | 3 of 5

Product Texas Oil Tools Locking Collar Operation The Texas Oil Tools locking collar design on the quick union enables a quick union to be used on a tool without having an additional o-ring seal. The locking collar is a special design collar that, when used, provides the necessary shoulder for the union nut to tighten up against. The locking collar is assembled with a thread sealant (liquid o-ring 104) that will prevent corrosion from damaging the threads. We have been using this thread sealant for about three years and we feel it has reduced the amount of corrosion build-up on the threads. Thread sealants may not be available during normal wireline or coiled tubing applications so if you do not have the thread sealant you will have to use Anti-seize on the threads and silicone on each end. CAUTION: THIS THREAD MUST BE INSPECTED WHEN THE REST OF THE EQUIPMENT IS INSPECTED ON A REGULAR BASIS. AS A MINIMUM THE LOCKING COLLAR MUST BE REMOVED ONCE A YEAR AND THE THREADS INSPECTED. If for some reason the locking collar on your piece of equipment is not tight please remove the locking collar. The locking collar is removed by reaching through the holes in the union nut with a ½” diameter rod and finding a corresponding hole in the locking collar. Unscrew the locking collar by turning clockwise (this is a left-hand thread). Remove the locking collar and union nut. Clean all of the threads and inspect them thoroughly. If the threads are damaged the parts must be repaired or replaced. Get a can of Anti-Seize and a tube of silicone gasket sealant ready; apply the Anti-Seize compound to the threads. Place the union nut on the tool in the correct position, thread the locking collar on the body. You may have to reach through the holes in the union nut to tighten the locking collar. Tighten to 150-300ft-lbs. The locking collar will hold the union nut in place. Apply the silicone to both ends of the locking collar; see drawing CO34-T002 for the proper places to apply the silicone. Allow the proper time for the silicone to cure. The equipment is now ready to use. Inspection of the Locking Collar The locking collar should be inspected periodically, we recommend every time the union is made up. For proper make-up the shoulder shown on drawing CO34-T002 must not have a gap. If there is a gap, the above procedure must be followed to ensure the equipment is safe to use. The locking collar must be removed once a year and inspected for corrosion and/or thread damage.

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PSB-043-PIB Rev / C P a g e | 4 of 5

9204-1591

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PRODUCT SERVICE BULLETIN

PSBL-4.06 10K EH/EC QUAD PISTON

4.06” 10,000 PSI WORKING PRESSURE EH & EC SERIES QUAD BOPs HYDRAULIC ACTUATOR ASSEMBLY

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-047-PIB

A

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PSB-047-PIB Rev / A P a g e | 2 of 3 REVISION HISTORY

A

27/June/2011

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May 2000

Rev

Date (dd.mm.yyyy)

Revision

CP

N/A

N/A Reason for issue

CHANGE DESCRIPTION Revision A

Change Description N/A Corrected doc name; Re-format

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PSB-047-PIB Rev / A P a g e | 3 of 3 PSBL-4.06 10K EH/EC QUAD PISTON

Product: Texas Oil Tools 4.06” 10M “EC & EH” Quad Blowout Preventer

Incident: We have had three incidents reported within the past year of a malfunction of the hydraulic actuator assembly. These incidents are not frequent but we would like to make everyone aware of these in order to prevent further incidents from occurring. While functioning the actuator the piston thread stripped out and the piston was separated from the piston rod. These actuators were originally designed for a retract hydraulic pressure of 2,000psi. Over the years we have changed the design parameters and we are currently specifying a hydraulic pressure of 3,000psi retract and 3,000psi close. The increase working pressure exerts extra force on this thread and can result in fatigue cracks in the threads. These fatigue cracks can lead to stripping out the threads in the piston. Another contributing factor is if the thread is not made up all the way on the piston rod. This reduces the amount of thread engagement and thus the possibility of thread shearing.

Action: TOT has reviewed the design of the actuators and we are recommending the following course of action: The pistons must be replaced if: 1. You are running the unit at hydraulic pressure of 2500psi or more. 2. You inspect the threads of the piston and see signs of fatigue. Please contact the TOT office that you purchased the BOP from or contact TOT in Conroe for replacement parts.

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PRODUCT SERVICE BULLETIN

PSBL-4.06 10K EH/EC SLIP RAM

ALL 4.06” 10,000 PSI EH & EC SERIES QUAD & TRIPLE BOPs SLIP RAM ASSEMBLY

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-048-PIB

A

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PSB-048-PIB Rev / A P a g e | 2 of 6 REVISION HISTORY

A

27/June/2011

-

May 2000

Rev

Date (dd.mm.yyyy)

Revision

CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description N/A Corrected doc name; Re-format

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PSB-048-PIB Rev / A P a g e | 3 of 6 PSBL-4.06 10K EH/EC SLIP RAM

Product: Texas Oil Tools 4.06” 10K “EC & EH” Quad Blowout Preventer Texas Oil Tools 4.06" 10K “EC & EH” Triple Combi Blowout Preventer

Incident: We have had two incidents reported within the past year of a malfunction of the Slip Ram Assembly. These incidents are not frequent but we would like to make everyone aware of these in order to prevent further incidents from occurring. The incident involved a Slip Ram Assembly that had just been tested. The coiled tubing guide that moves the coiled tubing into the gripping area of the slip insert separated from the slip insert. It sheared the two retaining screws that hold the guide in place. This unit had never closed the slip rams on coiled tubing, it was during the pressure test on the test mandrel that the guide was broken. We have not been able to duplicate the action but it is our opinion that the ability of the test mandrel to rotate forced the slip insert to rotate, and thus it sheared the retaining pins on the tubing guide. When the retaining screws shear, this leaves the slip insert in a vulnerable position to fall out of the slip ram. This is the reason for the warning on these Slip Ram Assemblies.

Action: TOT has spent time reviewing and testing the Slip Ram Assembly. We are therefore recommending that you modify or replace the slip ram assembly with an anti-rotation insert. This insert can be installed as a field modification or you can send in your Slip Ram Assembly to any of the following offices to have the modification completed, TOT Conroe, TOT/SSR Aberdeen, and TOT/EOT in Singapore. Any one of these locations can modify the slip ram assembly and your slip inserts with the new anti-rotation insert. The following drawings explain the field modification in detail. This is an easy modification that can be done at a local field camp or machine shop. If you have any problems with the changes, please contact your local TOT representative. Effective May 1st all 4.06" TOT equipment that is built will have the new anti-rotation insert installed in the slip ram. When the anti-rotation insert is installed in the ram all slip inserts that are used in the ram must have the corresponding groove or hole in the slip to slide into the insert in the ram. TOT is pursuing a one piece slip insert that will have the tubing guide machined or cast onto the slip. This will prevent the retaining pins from shearing, by eliminating them, but not the rotation of the slip. Please review the following procedure and drawing and have your TOT Slip Ram Assembly modified.

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PSB-048-PIB Rev / A P a g e | 4 of 6 Procedure: Ram Bodies 8041-0175 Quad and 9623-2860 Triple Combi Install the Anti-Rotation Insert in the ram. 1. Obtain the insert 2000-2721 from TOT. 2. Drill the hole in the Ram Body as shown. 3. Press fit insert 2000-2721 (TOT item) into the drilled hole as shown. 4. Measure the depth (1.615) to ensure proper installation

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PSB-048-PIB Rev / A P a g e | 5 of 6 Modify the Slip Insert Slip Insert part numbers 9206-3137, 9206- 3141, 9206-3144, 9206-2351, 9206-2361, and 9206-2373. The same insert is for the quad and triple combi rams. 1. Machine the slot in the rear of the slip insert as shown on the drawing. 2. The slot in the slip insert must mate up with the anti-rotation insert shown in the ram above. When the slip is installed this insert will prevent the slip from rotation and remove all the loading on the screws that retain the guide.

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PSB-048-PIB Rev / A P a g e | 6 of 6 Procedure (continued) Tubing Guide. Tubing Guide Part numbers 9206-3237, 9206-3241, 9206-3244, 9206-3251, 9206-3261, and 9206-3273. 1. Modify the tubing guide that is bolted to the slip insert. 2. This will minimize any potential for the guide to initiate the rotation of the slip insert.

All three of the above items must be modified to prevent to potential risk of the slip rotating in the ram assembly.

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PRODUCT SERVICE BULLETIN

PSBL-LOCKING COLLAR 8704-0931L

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-049-PIB

A

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Psb-049-PIB Rev / A P a g e | 2 of 3 REVISION HISTORY

A

28/June/2011

Revision

-

July 2000

Revision

Rev

Date (dd.mm.yyyy)

CP N/A Reason for issue

CHANGE DESCRIPTION Revision A

Change Description N/A Corrected doc name; Re-format

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PSB-049-PIB Rev / A P a g e | 3 of 3 Product: Texas Oil Tools CB62 Locking Collar

Incident: We had an incident in our shop with a BOP, manufactured in 1992, in which a locking collar was stripped off of a BOP. The BOP was in our shop undergoing some repair work. During the factory acceptance test, at the maximum test pressure of 10,000 psi, the locking collar thread was stripped off and the tool was damaged. After a thorough investigation by a third party we have concluded that the locking collar did not meet minimum hardness and tensile requirements. The material did not meet our minimum requirements for a heat of steel. The locking collar was from a batch of six that were made in 1992 from our UK office. The locking collar part number is 8704-0931L.

Action: TOT will inspect and replace any locking collar with the part number 8704-0931L and a trace number of 11586. The locking collar is for a CB62 union. If you have a BOP, lubricator or other pressure control equipment with this union, please have the locking collar inspected. The CB62 union is a 63/8" 5,000 psi union with 9.875-4 Acme (8.00 seal bore). If you received any pressure control equipment that includes a CB62 union from TOT or Drexel, please have this equipment inspected. TOT will replace any locking collar that does not pass our inspection.

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PRODUCT SERVICE BULLETIN

PSBL-ALL 15K ES BOP PISTON ROD

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-050-PIB

A

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PSB-050-PIB Rev / A P a g e | 2 of 5 REVISION HISTORY

A

28/June/2011

-

Feb 2001

Rev

Date (dd.mm.yyyy)

Revision

CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description N/A Corrected doc name; Re-format

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PSB-050-PIB Rev / A P a g e | 3 of 5 Product: 15K “ES” BOP

Incident: An incident occurred in the field with a piston rod and the piston rod head. The piston rod head sheared off while opening the rams. A restriction prevented the ram from retracting normally and the load induced on the rod head sheared it off.

Action: TOT will replace all of the rod heads with a new redesigned rod head and the addition of a ram guide on certain actuators. This change effects every “ES” actuator. The blind, slip, and pipe actuators on the quad require a new piston rod head and the ram guide. The shear actuator requires a new Rod Head. Actuators on the shear seal require a ram guide and new piston rod, and the pipe slip requires a new piston rod head. This recall takes effect immediately please contact TOT immediately to have these parts replaced. If the actuator parts can not be changed immediately please limit the hydraulic pressure to 1500psi maximum to prevent any future problems until you can have the parts replaced. Assembly of the Rod Head to the piston rod includes the use of Locktite 242 (Blue) for proper performance. Two drops of this Locktite on the piston rod threads will ensure adequate adhesion. Details: Pipe, Slip, and Blind Rams on the Quad: See drawing ES46-T011-1 New Rod Head part number 9905-2833 rev. C New Ram Guide part number 2001-0024 rev. -

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PSB-050-PIB Rev / A P a g e | 4 of 5 Shear Actuator on the Quad BOP: See Drawing ES46-T011-2 New Rod Head part number 9905-2854 rev. C No Ram Guide required for this actuator.

Combi Actuators also require a modification the following outlines the changes required for the pipe slip and shear seal actuators. Shear Seal Actuator: See Drawing ES46-T011-3 New Piston Rod part number 9905-2926 rev A New Ram Guide part number 2001-0025 rev. The piston rod must be replaced for this unit along with the addition of the ram guide. The shear seal does not have a rod head like the other actuators the design on the piston rod is such that it is not required.

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PSB-050-PIB Rev / A P a g e | 5 of 5 Pipe Slip Actuator: See Drawing ES46-T011-4 New Rod Head 9905-2425 Rev. B No other parts need to be changed.

All of these changes must be done. Please send your equipment in to Texas Oil Tools for this change to be performed by our assembly technicians and tested to our specifications.

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PRODUCT SERVICE BULLETIN

PSBL-3.06/4.06 15K ES PIPE/SLIP

ALL 3.06” & 4.06” 15,000 PSI ES SERIES BOP PIPE/SLIP RAM INSTALLATION PROBLEM

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-054-PIB

A

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Psb-054-PIB Rev / A P a g e | 2 of 4 REVISION HISTORY

A

28/June/2011

Revision

-

July 2001

Revision

Rev

Date (dd.mm.yyyy)

CP N/A Reason for issue

CHANGE DESCRIPTION Revision A

Change Description N/A Corrected doc name; Re-format

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PSB-054-PIB Rev / A P a g e | 3 of 4 Title: ES Pipe/Slip Installation Problem Effected Equipment: 3.06/4.06 ES Pipe/Slip Actuators Description: The ES pipe/slip ram can be installed on the actuator incorrectly resulting in damage to the bonnet and/or ram guide during the bonnet closing sequence. One verified field incident has been reported in which both BOP pipe/slip rams were not properly installed resulting in damage to both bonnets. The installation problem is a result of the rams appearing to be fully installed on the actuator’s ram guide while, in fact, being misaligned with the ram bore by about ½”. The improperly installed rams, in these cases, sit ½” too high on the ram guide. As the rams are retracted into the bonnet during the hydraulic bonnet close sequence the misaligned ram contacts the face of the bonnet causing severe damage to the bonnet face. As the ram contacts the bonnet it begins to cock and if hydraulic pressure is not shut off immediately the ram guide and piston rod can be damaged. Cause: The problem is caused by the ram’s compression pin contacting the top of the ram guide’s rocker mechanism preventing full and proper installation (see Figure 1). This design has been used successfully for many years in BOPs without the power ram change feature without incident. Without the hydraulic forces of the power ram change system the improperly installed rams are easily discovered and corrected by the technician as he attempts to manually close actuators with misaligned rams.

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Psb-054-PIB Rev / A P a g e | 4 of 4 Solution: The following steps should be taken to insure proper ram installation and minimize the possibility of equipment damage. 1) Verify that the compression pin is flush with the back of the ram before installing it on the ram guide (see Figure 2). A flush compression pin will insure that no interference can occur with the rocker. A tap with a rubber hammer is all it takes to make the pin flush. 2) Visually inspect the ram after installation to insure that it is fully seated on the ram guide and not misaligned with the bonnet’s ram bore. A straight edge laid across the top of the ram makes a good visual reference in determining proper ram alignment. 3) To further reduce the likelihood of ram installation problems an improved ram guide (p/n 2001-0168) can be purchased and installed on the actuator. The new ram guide makes it difficult to install the ram on the actuator without the compression pin being flush with the back of the ram (reference step 1 above)

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PRODUCT SERVICE BULLETIN

PSBL-JIC3 INJECTOR CONNECTOR

DETAILED DESCRIPTION

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-055-PIB

A

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PSB-055-PIB Rev / A P a g e | 2 of 4 REVISION HISTORY

A

28/July/2011

Revision

-

Nov 2001

Revision

Rev

Date (dd.mm.yyyy)

CP N/A Reason for issue

CHANGE DESCRIPTION Revision A

Change Description N/A Corrected doc name; Re-format

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PSB-055-PIB Rev / A P a g e | 3 of 4 Product Injector Connector Models JIC3-HH00, JIC3-BH00, JIC2-HH00 Discussion After six years of trouble free service the first inadvertent disconnect of an indicator equipped TOT injector connector was reported in October. The disconnect, which occurred in a Varco yard during rig up testing, was a result of a latch indicator that failed to give a clear indication of the latch’s position to yard personnel. A design change has been implemented that will give a clearer indication of the latch position to crane operators and personnel on the ground. Solution A new indicator has been designed that will more accurately indicate the position of the lock dogs. See the attached illustration. TOT has also included a second indicator on the tool. We feel these changes can be made quite easily. Procedure: The housing and the indicator must be replaced. Please contact TOT sales in Conroe to have these changes made. Units in the field may still be operated safely, provided their indicators are functioning properly. When the connector is opened the indicator must be at a 35° angle to the housing. When the connector is closed it must be parallel with the housing. If the indicator works as discussed and shown on the drawing the connector is working properly.

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PSB-055-PIB Rev / A P a g e | 4 of 4

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PRODUCT SERVICE BULLETIN

PSBL-4.06 10K EH/EC BOP

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-056-PIB

A

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PSB-056-PIB Rev / A P a g e | 2 of 3 REVISION HISTORY

A

28/June/2011

Revision

-

Jan 2002

Revision

Rev

Date (dd.mm.yyyy)

CP N/A Reason for issue

CHANGE DESCRIPTION Revision A

Change Description N/A Corrected doc name; Re-format

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PSB-056-PIB Rev / A P a g e | 3 of 3 Product 4.06” 10M EC and EH BOP Including all Conventional Quad and Combi Actuators Discussion The hand wheels on the 4.06" 10M EH quad and combi BOPs are difficult to turn when the hydraulic pressure applied exceeds 2500 psi to the closing side of the actuators. Cause: The problem was caused by a combination of the high hydraulic pressure applied (the hand wheels turned easily with less than 1500 psi hydraulic pressure) and high bearing and seal friction. Bearing and seal friction are proportional to the hydraulic pressure and are not excessive with hydraulic pressures below 1500 psi. Solution: Friction can be reduced to an acceptable level with the addition of a hytrel "washer" in the non-rising stem assembly positioned between the stem seal and bearing stack. Washer part number 7821-1252-PIP. Contact TOT Conroe for replacement parts if you are experiencing similar problems. Procedure: To add the Washer to the seal you will have to remove the hydraulic cap from the BOP. Take the existing non-rising stem out of the cap and remove the existing polypak seal. The seal will normally remain in the hydraulic cap so you may have to remove the seal from inside the cap. Installing the seal is easy, install the washer with the flat side toward the pressure and then install the seal. The lip of the seal must face the pressure. Drawing in EI56

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PRODUCT SERVICE BULLETIN

PSBL-3.06 10K/15K COMBI S/S

3.06” 10K & 15K COMBI BOP SHEAR/SEAL BLADES

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-057-PIB

A

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PSB-057-PIB Rev / A P a g e | 2 of 3 REVISION HISTORY

A

28/June/2011

Revision

-

Jan 2002

Revision

Rev

Date (dd.mm.yyyy)

CP N/A Reason for issue

CHANGE DESCRIPTION Revision A

Change Description N/A Corrected doc name; Re-format

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PSB-057-PIB Rev / A P a g e | 3 of 3 Product 3.06” 10M and 15M Combi Shear Seal Blades

Discussion We have recently come across a situation that we need to make all aware of. We have had 3.06” Shear Seal blades that have leaked during a pressure test. The blades were removed and inspected. Cracks in the cutting surface large enough to be the cause of the leak were visibly seen. The blades were replaced with a new set, the new set was pressure tested inspected and tested again with no further problems. We have isolated the incident to one batch of shear blades. The trace number on the blades is 106800. If you have any shear blades of this trace number please contact TOT for replacements. The trace number is low stress stamped on the actual blades. You can find it on the back of the blades. Solution We are under investigation of this issue and do not have the answer at this time but we felt it was urgent enough that we should advise you of the situation to prevent this from becoming a problem. Part numbers of items involved in this issue are 8703-7345, 8703-7345D, 8703-7445, 8703-7445D, 8703-7745, and 8703-7845. If you have any of these items with the trace number stamped on the blades please let us know.

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PRODUCT SERVICE BULLETIN

PSBL-7.06 5K ANNULAR BOP

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-058-PIB

A

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PSB-058-PIB Rev / A P a g e | 2 of 3 REVISION HISTORY

A

29/June/2011

Revision

-

May 2002

Revision

Rev

Date (dd.mm.yyyy)

CP N/A Reason for issue

CHANGE DESCRIPTION Revision A

Change Description N/A Corrected doc name; Re-format

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PSB-058-PIB Rev / A P a g e | 3 of 3 Product 7.06” 5M Annular BOP. Discussion Upon installation of new packer elements it has been observed that the affected 7.06” 5M annular BOPs will not drift. That is, the packer element obstructs the ID bore of the BOP. The performance of the BOP is not otherwise affected.

Cause A change in the mold used to manufacture the packer element has resulted in a slightly taller element. When installed, the bonnet (top) compresses the element resulting in a decreased ID.

Solution The wear plate (p/n 9705-0121) should be replaced with a new or reworked wear plate (p/n 9705-0121 rev B). The revision B version of the wear plate is .225” +.015/-.000 thick compared to earlier versions which were .625” thick. Existing screws will work with the revised wear plate. Field locations with the old wear plates may request the revised model from TOT.

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PRODUCT SERVICE BULLETIN

PSBL-3.06 10K EK QUAD BOP

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-059-PIB

A

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PSB-059-PIB Rev / A P a g e | 2 of 4 REVISION HISTORY

A

14/June/2011

-

July 2002

Rev

Date (dd.mm.yyyy)

Revision

CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Corrected Document Name; Re-format

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JTM

N/A

N/A

N/A

Prepared

Checked

Approved

PSB-059-PIB Rev / A P a g e | 3 of 4 Product 3.06” 10K Quad EK BOP (Slip and Shear Actuators Only) Discussion A recent field incident has been reported to Texas Oil Tools in which the locking stems of the shear and slip actuators have been damaged. The damage was severe enough to prevent the handwheel locks on the shear and slip actuators from functioning properly. The blind and pipe actuators are not affected. There are two versions of locking end cap for the large slip and shear actuators. The damage occurred on the older of the two designs and likely took place in our own shop during high pressure(4500 psi) hydraulic testing. Solution 1) Identify if BOP is equipped with older end cap design. Consult the illustration below to determine if your shear and/or slip actuators are equipped with the older end cap design. If measurements determine that the new end cap design is installed then no action is required. If old end cap design is determined to be installed then contact Texas Oil Tools for replacement parts. Note: Illustration only applies to the shear and slip actuators.

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PSB-059-PIB Rev / A P a g e | 4 of 4 2) When replacement parts arrive remove existing end cap assemblies from the BOP and

install new assembly as illustrated below. It may be necessary to time the end cap so that the indicator can be easily seen from the ground. Remove material from surface “1” using a lathe until desired indicator location (rotational orientation) is achieved.

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PRODUCT SERVICE BULLETIN

PSBL-CABLE SIDE ENTRY SUB

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-060-PIB

A

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PSB-060-PIB Rev / A P a g e | 2 of 4 REVISION HISTORY

A

29/June/2011

Revision

-

Sept 2002

Revision

Rev

Date (dd.mm.yyyy)

CP N/A Reason for issue

CHANGE DESCRIPTION Revision A

Change Description N/A Corrected doc name; Re-format

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N/A Checked

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PSB-060-PIB Rev / A P a g e | 3 of 4 Product Cable Side Entry Sub (CSES) Matched Clamp Plate Assembly

Incident There has been one reported failure of a CSES Matched Clamp Plate Assembly (assy # 801-708-xxx, where specific line size is stamped in place of “xxx”) in which the clamp plates failed to grip and suspend the cable resulting in a dropped bottom hole assembly. In addition, other clamp plates with the failure causing defect have been identified. The Matched Clamp Plate Assembly includes one front clamp plate (407-070-xxx) and one rear clamp plate (407-071-xxx) along with assorted hardware components.

Cause Failure was caused by inadequate interference between the gripping teeth of the clamp plates and the cable and was due to a manufacturing error. The manufacturing error was a missed or improperly performed facing operation that occurred on at least several of the clamp plates.

Action It is recommended that all Matched Clamp Plate Assemblies, assy # 801-708-xxx, be inspected by field personnel to the attached inspection drawing. Assemblies determined to be defective should be immediately returned to Texas Oil Tools for warranty replacement.

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PSB-060-PIB Rev / A P a g e | 4 of 4

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PRODUCT SERVICE BULLETIN

PSBL-4.06 10K DTS4 TANDEM S/P

4.06”, 10,000 PSI, DTS SERIES, TANDEM STRIPPER PACKER MAIN PISTON

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-063-PIB

A

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PSB-063-PIB Rev / A P a g e | 2 of 5 REVISION HISTORY

A

29/June/2011

Revision

-

March 2003

Revisoin

Rev

Date (dd.mm.yyyy)

CP N/A Reason for issue

CHANGE DESCRIPTION Revision A

Change Description N/A Corrected doc name; Re-format

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JTM

Prepared

N/A Checked

Approved

PSB-063-PIB Rev / A P a g e | 3 of 5 Product: All DTS4 series tandem strippers. The DTS4 tandem stripper has a bore size of 4.06” and a working pressure of 10,000 psi. It is designed for use as a secondary stripper/packer and was first put into service in 1991.

Incident: Texas Oil Tools was recently notified of the failure of a DTS4 main piston (item 14) during a rig up test to 10,000 psi. While under pressure the piston retention mechanism (see items 27,28 and 14) failed allowing the piston (item 14) to open and vent pressure to the atmosphere. Specifically, the failure occurred when the retention shoulder of the piston (shoulder loaded by item 27) sheared under load. The failure occurred during a test of the upper primary stripper packer. During such a test there would normally be no load on the door retention mechanism as the piston is pressure balanced, and as such, does not tend to move either up or down under the influence of wellbore pressure. However, the test was conducted with a BHA larger than the CT diameter suspended on the CT string below the DTS4 stripper that, under pressure, was forced upward against the stripper’s lower brass bushing (item 31). The upward force on the lower bushing imparted by the BHA effectively packed-off the DTS4 tandem stripper even though the operator had applied no pack-off pressure. The upward force generated by the now fully energized packer (items 23 and 24), in the absence of any counterbalancing force from the pack-off piston (item 14), was enough to shear the retaining shoulder of the piston (item 14). Particularly susceptible to such a failure are those strippers equipped with piston p/n 9102-1025AB of which only eight have been manufactured. The owners of these eight pistons (all manufactured after November 2002) will have been identified and notified prior to the release of this Product Service Bulletin. All other DTS4 tandem strippers were equipped with higher strength pistons that are susceptible to failure only under the very specific circumstances described in the following table.

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PSB-063-PIB Rev / A P a g e | 4 of 5

NOTE: Any combination of wellbore pressure and pack-off pressure is a SAFE operating condition. The table above assumes the presence of a an oversized BHA exerting an upward force on the DTS4’s lower bushing (item 31) resulting in the unintended pack-off of the DTS4’s packing element (items 23 and 24). Such a BHA (or flanged test rod) is most likely to be present during rig up tests, but the possibility does exist for such a condition to exist during operations. The “tagging” of the DTS4’s bottom bushing, for example, with a BHA during workover operations could result in an UNSAFE operating condition if hydraulic retract pressure is applied during the tagging procedure.

Solution: Those customers with one of the eight p/n 9102-1025AB pistons will be directly contacted and provided with safe operating parameters. All other customers can ensure continued safe operation of their DTS4 tandem stripper by: 1) Adhering to the safe operating parameters listed in the table above. Practically speaking this can be accomplished by reducing the retract pressure to 0 psi when stripping with the primary stripper/packer (ex: DSA4). 2) Limit the “tagging” force applied to the bottom bushing (item 31) to no more than 20,000 lbs at wellbore pressures greater than 7,000 psi and no more than 40,000 lbs at wellbore pressures below 7,000 psi.

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PSB-063-PIB Rev / A P a g e | 5 of 5

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PRODUCT SERVICE BULLETIN

PSBL-SLIP INSERTS W/WELDED GUIDE

ALL SLIP INSERTS WITH WELDED GUIDE F/4.06” AND LARGER SLIP RAMS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-064-PIB

A

www.nov.com

PSB-064-PIB Rev / A P a g e | 2 of 3 REVISION HISTORY

A

29/June/2011

Revision

-

Nov 2003

Revision

Rev

Date (dd.mm.yyyy)

CP N/A Reason for issue

CHANGE DESCRIPTION Revision A

Change Description N/A Corrected doc name; Re-Format

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JTM

Prepared

N/A Checked

Approved

PSB-064-PIB Rev / A P a g e | 3 of 3 Subject: Slip Inserts that contain a welded guide (ref p/n’s 9321-33xx and 9321-24xx)

Discussion: In recent incidents we have discovered that some slip inserts have a weld that is too large and it has the potential of interfering with the mating components in the slip ram assembly. The welded slip inserts are used in 4.06” and larger sizes of slip rams however not all of the designs have the welded tubing guide. If the design of slip ram you are using has welded guides please make sure that the weld does not interfere with the form or fit of the design. The problem is if the fillet weld is too large. The fillet weld must be small enough for the slip insert to slide into the ram. Do not attempt the modify the slip inserts yourself. Action: If the slip insert does not easily fit with the mating components or if the weld is not per the drawing below please contact TOT for replacement items.

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PRODUCT SERVICE BULLETIN

PSBL-3.06/4.06 OVER/UNDER S/P

3.06” & 4.06” OVER/UNDER STRIPPER PACKERS ALERT: DSV6, DSU4 & DSU6

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-061-PIB

A

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PSB-061-PIB Rev / A P a g e | 2 of 3 REVISION HISTORY

A

29/July/2011

-

Jan/2004

Rev

Date (dd.mm.yyyy)

Revision Initial Release

CHANGE DESCRIPTION Revision A

Change Description Initial Release

www.nov.com

CP Reason for issue

JTM

N/A Prepared

N/A Checked

Approved

PSB-061-PIB Rev / A P a g e | 3 of 3 Title: Over/Under Stripper Alert Effected Equipment: 3.06/4.06 Over/Under Strippers; DSV4, DSV6, DSU4 and DSU6 Description: It has come to our attention that one, or more, of our customers may be orienting the bolt holes of the stripper's bottom flange in a way that may cause hydraulic system failure. These operators are removing the set screws securing the bottom sub to the stripper's main body and rotating the bottom sub until the desired bolt hole alignment is achieved. This technique will create a gap at the o-ring sealing hydraulic pressure between the bottom sub and main body and result in the failure of that o-ring. Solution: 1) Do not remove the set screws securing the bottom sub to the main body unless you are engaged in the repair or refurbishment of the stripper. 2) Operate the stripper ONLY if the bottom sub is firmly tightened against the main body and the set screws are installed. 3) Align the bottom sub bolt holes by rotating (orienting) the ENTIRE stripper.

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PRODUCT SERVICE BULLETIN

PSBL-SHEAR BOOSTER BREATHER

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-065-PIB

A

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PSB-065-PIB Rev / A P a g e | 2 of 3 REVISION HISTORY

A

29/June/2011

-

Jan 2004

Rev

Date (dd.mm.yyyy)

Revision

CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Corrected doc name; Re-format

www.nov.com

JTM

N/A Prepared

N/A Checked

Approved

PSB-065-PIB Rev / A P a g e | 3 of 3 PSB-065-PIB Product: Breather p/n 7912-2551 This breather is used in most Texas Oil Tools Shear Boosters to vent the open side of the booster piston to atmosphere. Discussion: There has been one recent field incident in which the inner wire mesh core of the subject breather became clogged and blew out. While such an incident does not degrade the operational ability of the booster, it does present a potential safety hazard to those who work around the equipment. The incident occurred when the breather became clogged, probably with grease or paint, and was unable to exhaust the required volume of air during the booster’s close stroke. There was a pressure build up due to the restriction resulting in damage to the breather and possibly a small amount of flying debris (the wire mesh). Solution: Replacement of existing wire mesh breather (p/n 7912-2551) with non-mesh version (p/n 7934-7601Z). A replacement breather can be obtained, free of charge, by contacting TOT sales @ 936-523-2700 or email [email protected]. Note: As advised in Texas Oil Tools Product Service Bulletin PSB-038 (July 1997) -- The breather will not prevent water or moisture from getting into this chamber; therefore it will be more important now to maintain the grease in this chamber. The correct way to fill this chamber with grease is to close the actuator and then fill the chamber with grease until it starts to come out of the breather. Open the actuator and the grease will now have a coating on all of the surfaces in the chamber.

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Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700

Product Service Bulletin

Product: 7.06” 10M Pipe/Slip Ram Assembly.

Incident: There has been a single reported case of a slip insert and compression pin falling down hole during coiled tubing operations. An investigation is currently being conducted and the exact cause of incident is, at this time, unknown. Texas Oil Tools is issuing this product service bulletin prior to a determination of cause due to the significant consequences of an object dropped down hole. An update to this bulletin, or an additional bulletin, will be issued at the conclusion of the investigation if the cause is determined to be product related.

Recommended Actions: All 7.06” 10M Pipe/Slip ram assemblies (p/n EC7R-VU**) should be visually inspected to verify that: 1) The set screws (item # 108) are installed. Set screw p/n 7942-0404 2) The set screws installed are 1.0” long. NOTE: While all ram assemblies have shipped with the correct set screws (p/n 7942-0404) the TOT tech unit, #1304, incorrectly calls for set screw p/n 7942-0402. A revised copy of TU1304 accompanies this bulletin.

Prepared by: Approved by:

7.06” 10M Pipe / Slip Ram Assembly

PSB-066 April 2004 Page 1 of 1

Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700

Product Service Bulletin

Product: 7.06” 10M Pipe/Slip Ram Assembly.

Incident: As a follow up to PSB-066 Texas Oil Tools is now recommending the replacement of the slip insert assembly related to the 7.06” 10M Pipe/Slip Ram Assembly. The slip insert 9803-11xx has been redesigned replacing the retaining set screws with load bushings and retainer pins. This new design will prevent the inadvertent placement of set screws that are too short and strengthen the overall performance of the slips. See Illustration below (9806-3098).

Recommended Actions: All 7.06” 10M Pipe/Slip ram assemblies (p/n EC7R-VU**) should be rebuilt as follows: 1) Replace slip 9803-11xx with 9803-11xx Revision A. Contact your Texas Oil Tools sales representative as soon as possible to secure replacement parts. 2) Use new retainer pins 2004-3321 and bushings 2004-3322 3) Obtain revised copy of TU 1304, 1412 or 1427

Prepared by: Approved by:

7.06” 10M Pipe / Slip Ram Assembly

PSB-067 June 2004 Page 1 of 1

PRODUCT SERVICE BULLETIN

PSBL-4.06 10K DTZ4 TANDEM S/P

4.06”, 10,000 PSI WORKING PRESSURE, DTZ SERIES, TANDEM STRIPPER PACKER

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-068-PIB

A

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PSB-068-PIB Rev / A P a g e | 2 of 3 REVISION HISTORY

A

14/June/2011

-

Aug 2004

Rev

Date (dd.mm.yyyy)

Revision

CP

Initial Release Reason for issue

CHANGE DESCRIPTION Revision A

Change Description Initial Release Corrected doc name; Re-format

www.nov.com

JTM

N/A

N/A

N/A

Prepared

Checked

Approved

PSB-068-PIB Rev / A P a g e | 3 of 3 PSBL-4.06 10K DTZ4 TANDEM S/P 4.06”, 10,000 PSI WORKING PRESSURE, DTZ SERIES, TANDEM STRIPPER PACKER Product: 4.06 10K Tandem Stripper Packer Model DTZ4. Dynamic O-Ring replacement.

Discussion: There has been an incident in which, after a long period of storage, the window seal (o-ring) failed upon initial activation. Upon disassembly and examination it was found that the o-ring had rolled and then failed.

Actions: 1) Replace O-Ring 7813-3444 with T-Seal 7951-3444. 2) As a precaution, replace O-Ring 7813-3363 with T-Seal 7951-3363. 3) Obtain revised copy of Texas Oil Tools technical manuals 1354C & 1420A. The Bill of Material & Seals Kit have been changed.

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PRODUCT SERVICE BULLETIN

PSBL-4.06 10K DTS4 TANDEM S/P

4.06”, 10,000 PSI WORKING PRESSURE, DTS SERIES, TANDEM STRIPPER PACKER

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-071-PIB

B

www.nov.com

PSB-071-PIB Rev / B P a g e | 2 of 3 REVISION HISTORY

B

14/Jine/2011

Revision

A

Aug 2004

Revision

Rev

Date (dd.mm.yyyy)

CP Reason for issue

CHANGE DESCRIPTION A B

Added 1376 to list of tech units psb applies to Corrected doc. name; Re-format

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JTM

N/A

N/A

N/A

Prepared

Checked

Approved

PSB-071-PIB Rev / B P a g e | 3 of 3 Product: 4.06 10M Tandem Stripper Packer Model DTS4.

Discussion: In keeping with Texas Oil Tools policy of continued design improvement, Texas Oil Tools recommends replacing the dynamic piston seal.

Actions: 1) Replace O-Ring 7813-3447 with T-Seal 7951-3447, available from Texas Oil Tools. 2) Obtain revised copy of Texas Oil Tools technical manuals 1182, 1229, 1326 & 1376

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Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700 www.tot.com

Product Service Bulletin

Product: 4.06 10M Tandem Stripper Packer Model DTB4, DTA6 & DSQ4.

Discussion: In keeping with Texas Oil Tools policy of continued design improvement, Texas Oil Tools recommend replacing two dynamic seals.

Actions: 1) 2) 3)

Replace O-Ring 7813-3444 with T-Seal 7951-3444. Replace O-Ring 7813-3363 with T-Seal 7951-3363, available from Texas Oil Tools. Obtain revised copy of Texas Oil Tools technical manuals 1343, 1344 & 1422.

4.06 10m Tandem Stripper Packer Model DTB4 and DTA6 O-Ring Replacement.

PSB-070 August 2004 Page 1 of 1

Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700 www.tot.com

Product Service Bulletin

Product: 4.06” 10M EH44/EC44 Pipe/Slip Actuators Incident: There has been a reported case of an EH44/EC44 pipe/slip actuator piston rod (p/n 8741-0121, rev C) in which the rod’s head was parted from the shaft. The rod in question was manufactured in 1992 and has been in service since that time. The preliminary determination of the cause of the incident is a cyclic fatigue initiated crack at an area of local stress concentration. Later revisions of the piston rod have design features that reduce the level of localized stresses and are less susceptible to fatigue crack initiation. Revision C piston rods were last manufactured in September of 1994. Discussion: The pipe/slip piston rod in question, along with its mate, had been checked for cracks as part of a scheduled maintenance program one month prior to the incident and both were determined to be crack free at that time. After the incident, the mating piston rod was found to have cracks in the same area, though its head had not parted from its shaft. Required Actions: 1) It is required that all locations with 4.06” 10M pipe/slip combi actuators manufactured prior to September 1994 be inspected for the presence of piston rods p/n 8741-0121 rev. A, B or C. If found, it is required that they be replaced with the latest revision, rev. G. Contact your TOT sales representative for the latest rod revision. 2) 4.06” 10M pipe/slip actuators manufactured prior to 1994 should be inspected for the presence of 4.25” ID piston sleeve p/n 9323-1920 (see illustration below). It is believed that the absence of this sleeve could have been a contributing factor in the incident. The sleeve became standard on all 4.06” 10M pipe/slip actuators in 1993. Contact your TOT sales representative for the kit p/n EH44-RW98 which includes all hardware required to add sleeve p/n 9323-1920 to your pipe/slip actuator.

4.06” 10M EH44/EC44 Pipe/Slip Actuators

PSB-069 September 2004 Page 1 of 3

3) As an added precaution and product improvement it is recommended that the pipe/slip actuator’s stem seal configuration be modified to include a third and fourth seal as shown in the illustration. The long stroking nature of this 4.06” 10M EH44/EC44 pipe/slip actuator makes it possible to pull a piston rod, that has been damaged as described above, into the stem seal package. The additional seals will eliminate the possibility of wellbore fluid leakage in this unlikely event. Note: the latest revisions of piston rod 8741-0121 have design features that, when used in conjunction with piston sleeve p/n 9323-1920, make a reoccurrence of this incident unlikely. This modification requires the replacement of the brass bushing. Contact your TOT sales representative for kit p/n EH44RW99 to facilitate this modification.

4.06” 10M EH44/EC44 Pipe/Slip Actuators

PSB-069 September 2004 Page 2 of 3

4.06” 10M EH44/EC44 Pipe/Slip Actuators

PSB-069 September 2004 Page 3 of 3

Product Service Bulletin

Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700 www.tot.com

Product: 3.06” EL wireline rams for 3/16” and 7/32” line size of the following part numbers: 8909-3124 revs A and B 8909-3125 revs A and B 8909-3024 rev A 8909-3025 rev A

3

/16” line size /32” line size 3 /16” line size 7 /32” line size 7

with EQ Valve with EQ Valve without EQ Valve without EQ Valve

Discussion: There has been one reported case in which wireline cable has been damaged by the line guides of a 3.06" EL ram body. Upon review it has been determined that under certain tolerance extremes it is possible that the ram's line guides will not fully cover the front seal's metal plates. Front seal plates exposed in this manner can pinch the wireline cable as the rams are closed resulting in damage to the cable. Actions: Operators in possession of the effected rams are encouraged to contact their Texas Oil Tools sales representative.

Prepared by: Approved by:

3.06” EL wireline rams for 3/16” and 7/32” line size

PSB-072 Issue Date: December 2004 Page 1 of 1

Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700 www.tot.com

Product Service Bulletin

Product: 7.06” 5M (EG72 BOP) pipe/slip front seals for 2-5/8” and larger tubing sizes.

Problem: There have been several reported cases of pipe/slip ram assemblies failing to pass pre-job pressure tests. The problem is often that the seals can not achieve a low pressure test. All incidents have involved 2-5/8” and/or 2-7/8” line size pipe/slip ram assemblies.

Discussion: Testing at Texas Oil Tools over the past few weeks has shown the problem to be isolated to the 2-5/8” and larger front seals. A slight modification to the elastomer compound for these sizes only, and subsequent requalification testing, has solved the problem. The resulting product now consistently achieves both high and low pressure tests with closing pressures at or below 2000 psi.

Recommended Action: All 2-5/8” and larger pipe/slip front seals for the 7.06” 5M EG Workover BOP should be returned to Texas Oil Tools to be replaced with the new and improved design. The following part numbers are effected: Front Seal 9209-7467 is replaced with 9209-7467-PP Front Seal 9209-7473 is replaced with 9209-7473-PP Front seal 9209-7475 is replaced with 9209-7475-PP Front seal 9209-7478 is replaced with 9209-7478-PP Front seal 9209-7479 is replaced with 9209-7479-PP Front seal 9209-7488 is replaced with 9209-7488-PP

Prepared by: Approved by:

7.06” 5M (EG72 BOP) pipe/slip front seals for 2-5/8” and larger tubing sizes.

PSB-073 Issue Date: January 2005 Page 1 of 1

PRODUCT SERVICE BULLETIN

PSBL-4.06” 10M/15M SLIP INSERTS

4.06” 10M SLIP RAMS EC/EH – 4.06 10M/15M ES SLIP RAMS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

PSB-075-PIB

E

www.nov.com

PSB-075-PIB Rev / E P a g e | 2 of 4 REVISION HISTORY

E D C B A

07/Aug/2015 17/Oct/2013 10/July/2013 June 2006 April 2005

Rev

Date (dd.mm.yyyy)

Revision Revision Revision Revision Initial Release Reason for issue

JD

CP CP CP GS GS

JD JD N/A MW

MD MW MW JD JD

Prepared

Checked

Approved

CHANGE DESCRIPTION Revision A B C D E

Change Description Initial Release N/A Add Update Note Add 9206-25** to part numbers Correct Revision Level in Revision History; Add Revised Drawing ES4R-T008

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PSB-075-PIB Rev / E P a g e | 3 of 4 PRODUCT: 4.06” 10M Slip Rams EC/EH – 4.06 10M/15M ES Slip Rams

UPDATE: Part numbers: 9206-23**, 9206-25**, 9206-31** and 9905-31** with bolt in guides should not be used effective June 20, 2013.

INCIDENT: There has been a reported case of mismatched slip inserts being installed in opposing rams resulting in improper functioning. The slip inserts in question were of different part numbers but were similar enough in appearance that they were mistakenly used together PROBLEM: There are two basic slip designs for 4.06” 10/15M quad BOPs. The older design (p/n’s 9206-23**, 920625** 9206-31** and 9905-31**) employs a bolt on line guide while the newer version (p/n 2000-30**) is of a cast solid body type. The cast slip has the line guide as an integral part of the slip and does not require bolts or welds to secure the line guide. The cast slip’s line guide is nearly an inch thick compared to just ½” for the bolt on version. NOTE: In June of 2004, 9206-2351 (and larger, -2356, -2361, and - 2373) was changed to a casting. The same part number was used. The slips should be used as sets. A bolt on slip should not be used with a cast slip. While the slip designs can both be used in the same ram blocks they are not designed to be used together as a mismatched pair. In fact, because of the significant difference in the design of the two line guides they will not mesh properly when closed against each other. They will, in other words, prevent the proper closure of the slip rams and will not properly grip the coiled tubing.

ACTION: To prevent using a mismatched pair it is important that care is taken to visually verify that the opposing slip inserts are the same. The following illustration clarifies the visual difference between the two designs.

HISTORY: • The cast slips have been used in the 4.06” 10M Quad/Combi Rams since April 2002. • In January 2005, we initiated the use of the cast slips in the 4.06” ES BOP.

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PSB-075-PIB Rev / E P a g e | 4 of 4

ES4R-T008

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Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700 www.tot.com

Product Service Bulletin

Product: 4.06” 10M & 15M, IH Sidewinder Stripper Packer – Model DSX4 & DSX6 Discussion: Until recently, the tech manual for this product has specified that the tightening torques for the bonnet bolts should be 4600 ft. lbs. It has been reported that this is rarely achievable except under ideal circumstances. Therefore, it is recommended that a minimum torque of 2000 ft. lbs. should be applied to the bonnet bolts during reassembly The maximum torque shall remain at 4600 ft. lbs. Adhering to the minimum torque is especially important after field testing. Action: •

Texas Oil Tools Tech Manual 1308 (Rev C) has been revised to reflect change.

•

Operators in possession of affected equipment should update their maintenance schedules accordingly.

Prepared by: GS Approved by: JD

4.06” 10M & 15M, IH Sidewinder Stripper Packer

PSB-076 Issue Date: August 2005 Page 1 of 1

Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700 www.tot.com

Product Service Bulletin

Product: Texas Oil Tools DSA4: 4.06” 10,000 psi Working Pressure, Side Door Stripper Packer Operational Observances: There has been a reported incident ???? 4.06” DSA4 Side Door Stripper in the field with incorrect doors. The door is used as a safety device to prevent the user from opening the hydraulic piston under pressure. If the door is too short and hydraulic pressure is applied to the open side of the piston, well pressure could leek. Operators should check the door length on their equipment. The correct door length is 7.87 inches. If the door length is 7.87 inches, no action is required. Action: If the door length is shorter, contact Texas Oil Tools for replacement.

Prepared by: Approved by:

Texas Oil Tools DSA4: 4.06” 10,000 psi Working Pressure, Side Door Stripper Packer

PSB-077 Issue Date: November 2005 Page 1 of 1

Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700 www.tot.com

Product Service Bulletin

Product: 3.00” 10M Shear Seal Piston Rod, Part No. 9706-1145 and 9706-1145B Problem: There has been a reported failure of a shear/seal piston rod used in the 3.06” 10,000psi WP Combi BOP Large Bore Actuator. The head of the piston rod had been sheared and did not retract the ram from the bore when the hydraulic actuator opened. The indicator rods showed the BOP had opened but the ram had not retracted. Discussion: An investigation of the incident shows that the Shear Seal Ram will bottom out before the piston bottoms out. The pressure on the piston will continue to act on the piston rod head and it may be sheared off after repeated cycles. It has been determined to be a low cycle fatigue failure. This does not affect the standard shear/seal actuator or the actuators that use the booster assembly. Action Taken: A design change was initiated to the piston so that it will bottom out before the ram bottoms out, there by eliminating any shearing on the head of the piston rod. The piston rod and the ram guide on the piston rod were also redesigned to strengthen the connection between them. The following parts should be returned to Texas Oil Tools and will be replaced. Description

Old Part No.

New Part No.

Piston Piston Rod Ram Guide

9706-1141 9706-1145 9706-1144

2005-0892B 2005-0891XB 2005-0893B

The following list contains serial number, assembly number, order number, and a description of the Prepared by: JD Approved by: MW

Texas Oil 3.00” 10M Shear Seal Piston Rod, Part No. 9706-1145 and 9706-1145B

PSB-078 Rev. B Issue Date: December 2005 Revision Date: July 2006 Page 1 of 2

BOP’s that are affected by this change. SERIAL NUMBER

ASSY#

ORDER#

DESCRIPTION

012-16004

EK34-NA39B

89326

012-16062

EK34-NA39B

91709

3.06 EK DUAL BOP 10WP H2S

012-16090

EK34-NA39

92298

3.06 10M EK DUAL BOP ASSY

012-16094

EK34-N411

92298

3.06 10M EK DUAL BOP ASSY

012-16098

EK34-N411

92298

3.06 10M EK DUAL BOP ASSY

012-16102

EK34-N411

92298

3.06 10M EK DUAL BOP ASSY

013-16577

EK34-NA39

95679

3.06 10M EK DUAL COMBI BOP ASSY

021-17320

EK34-NA39

100636

3.06" 10M EK DUAL COMBI BOP ASSY

031-18581

EK34-NA39XB

111219

3.06 10M EK DUAL BOP ASSY FREE 1.50

034-19476

EK34-NA39X

118108

3.06 10M EK DUAL BOP ASSY NACE

034-19521

EK34-NA39X

117861

3.06 10M EK DUAL BOP ASSY NACE

041-19905

EK34-NA39X

121303

3.06" 10M EK DUAL COMBI BOP ASSY NACE

041-19911

EK34-NA39X

121304

3.06" 10M EK DUAL COMBI BOP ASSY NACE

041-20020

EK34-NA39X

121525

3.06" 10M EK DUAL COMBI BOP ASSY NACE

043-20365

EK34-NA39X

124299

3.06" 10M EK DUAL COMBI BOP ASSY NACE

043-20371

EK34-NA39X

124299

3.06" 10M EK DUAL COMBI BOP ASSY NACE

043-20479

EK34-NA39X

126176

3.06" 10M EK DUAL COMBI BOP ASSY NACE

044-20658

EK34-NA39X

125399

3.06" 10M EK DUAL COMBI BOP ASSY NACE

EK'S 3.06 10M DUAL BOP ASSY

044-20667

EK34-NA39X

125399

3.06" 10M EK DUAL COMBI BOP ASSY NACE

044-20824

EK34-NA39XB

129368

3.06" 10M EK DUAL COMBI BOP ASSY NACE -50F

052-21455

EK34-NA39XB

134879

3.06" 10M EK DUAL COMBI BOP ASSY NACE -50F

052-21394

EK34-NA39X

133874

3.06" 10M EK DUAL COMBI BOP ASSY NACE

053-21739

EH34-NA29XL

137447

3.06" 10M EH DUAL COMBI BOP ASSY NACE

053-21742

EH34-NA29XL

137447

3.06" 10M EH DUAL COMBI BOP ASSY NACE

054-21849

EK34-NA39XB

139156

3.06" 10M EK DUAL COMBI BOP ASSY NACE-50F

054-21851

EK34-NA39XB

139157

3.06" 10M EK DUAL COMBI BOP ASSY NACE-50F

054-21960

EK34-NA39XB

140530

3.06" 10M EK DUAL COMBI BOP ASSY NACE-50F

973-11523

EH34-NA29

49974

S.B.COMBI BOP:3.06,10M,H2S,LG SHEAR

973-11603

EH34-NA29

49973

S.B.COMBI BOP:3.06,10M,H2S,LG SHEAR

981-12357

EH34-NA29

56641

S.B.COMBI BOP:3.06,10M,H2S,LG SHEAR

981-12422

EH34-NA29

56638

S.B.COMBI BOP:3.06,10M,H2S,LG SHEAR

982-12518

EH34-NA29

62218

S.B.COMBI BOP:3.06,10M,H2S,LG SHEAR

982-12984

EH34-NA29

62220

S.B.COMBI BOP:3.06,10M,H2S,LG SHEAR

983-13011

EH34-NA29

62221

S.B.COMBI BOP:3.06,10M,H2S,LG SHEAR

EH34-SA23 023-18065

EH34-SA23

106677

BOP ASSY 3.06 10M SGL LG SHEAR 1.00-1.75

EH34-NA29

001-14392

EH34-SA23

79706

S.B. COMBI BOP 3.06 10M H2S LG SHEAR

043-20459

CR01-EH34SA451X

125880

BOP ASSY 3.06 10M SGL S/S NACE

053-21719

TOT1-EH34N411XL

137327

S.B.COMBI BOP:3.06,10M,H2S,LG SHEAR

053-20721

TOT1-EH34N371XL

137327

S.B.COMBI BOP:3.06,10M,H2S,LG SHEAR

Prepared by: JD Approved by: MW

Texas Oil 3.00” 10M Shear Seal Piston Rod, Part No. 9706-1145 and 9706-1145B

PSB-078 Rev. B Issue Date: December 2005 Revision Date: July 2006 Page 2 of 2

Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700 www.tot.com

Product Service Bulletin

Product:

Front Seal 8505-5300 5.12” ES BOP Pipe/Slip Ram, Batch number 102282

Incident for Product:

There has been an incident where a 5.12” ES BOP Pipe/Slip ram front seal 8505-5351 top plate from batch number 102282 became dis-bonded from the front seal elastomer. This caused the plate to move forward and scrape the coiled tubing. The root cause of this was found to be incorrect bonding agent used at a vendor for Texas Oil Tools for Low Temp Nitrile. Quantity of 10 front seals were manufactured under batch number 102282.

Required Action:

It is required that any 8505-53** front seals under batch number 102282 be removed from service and replaced with new front seals supplied by Texas Oil Tools.

Front Seal 8505-5300 5.12” ES BOP Pipe/Slip Ram, Batch number 102282

PSB-081

Compression Pin 2002-3793B 5.12” ES BOP Pipe/Slip Ram

Issue Date: February 2006 Page 1 of 1

Prepared by: GS Approved by: JD

Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700 www.tot.com

Product Service Bulletin

Product:

Compression Pin 2002-3793B 5.12” ES BOP Pipe/Slip Ram

Incident for Product:

The 5.12” 15M ES style Pipe/Slip Ram assembly (ES5R-VT**L) compression pin 2002-3793B exhibited swelling of .002”. over the acceptable tolerance at the exposed end of the compression pin acting on the rocker. Swelling of .002” occurred across .998 +.000/-.002 diameter along a length of .09” at the chamfer. Ram function was not impeded by this swelling.

Required Action:

It is required that all 5.12” 15M ES Pipe/Slip ram assemblies (ES5R-VT**L) using compression pin 2002-3793B be dimensionally inspected per the below drawing. The compression pin 2002-3793B must be replaced with 2002-3793XB. Please contact TOT for new compression pins.

PSB-082

Prepared by: GS Compression Pin 2002-3793B 5.12” ES BOP Pipe/Slip Ram Approved by: JD

Issue Date: February 2006 Page 1 of 1

Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700 www.tot.com

Product Service Bulletin

Product: Cable Side Entry Sub bodies and adapter subs for both 3.5” and 4.5” Discussion: Investigation into raw material supplied on Cable Side Entry Sub bodies and adapter subs revealed incorrect minimum yield strength. Yield strength requirement for these components is 135,000 PSI. Additional raw material testing concluded material supplied was below the 135,000 PSI required. Action Required: Inspection of Cable Side Entry Sub bodies and adapter subs should be conducted to identify serial numbers listed below. If any numbers are found below, remove from service and contact your Texas Oil Tools sales representative for replacement Assemblies. 137005/05-01 134581/05-04 134581/05-01 134581/05-02 137204/05-01 134587/05-01 134590/05-01 136063/05-01

Prepared by: GS Approved by: JD

PSB-083 Cable Side Entry Sub bodies and adapter subs for both 3.5” and 4.5”

Issue Date: March 2006 Page 1 of 1

Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700 www.tot.com

Product Service Bulletin

Product: 4.06” 10M EH Shear Seal Actuator with Booster Cylinder Manufactured prior to January 2002 Piston Keeper 9701-2027

The piston keeper part no. 9701-2027 was obsolete and replaced with a new piston keeper part no. 9701-2029. The reason for this change was that when the rams were closed and the sleeve nut was run in to lock the rams in place, there was a chance that the key connecting the sleeve nut and the nonrising stem together may fall out. This could potentially keep the sleeve nut from returning to the open position. The new piston keeper is longer than the previous piston keeper and will not allow the sleeve nut to extend past the key and thereby keeping it in place.

Discussion:

It has been discovered that some of the old piston keepers part no. 9701-2027 were not replaced in some BOP’s that were in use. The parts are used in assemblies EH44-BC07, EH44-BC07L, EC44P449, EH44-NA39, and EH44-LA39X. Some disassembly and a visual check will ensure that the correct piston keeper part no. 9701-2029 is being used. See the drawings below that show the difference in the parts. If any of the old piston keepers are discovered, contact Texas Oil Tools for replacement.

9701-T001

PSB-085

Prepared by: MW Approved by: JD

Piston Keeper 9701-2027

Issue Date: April 2006 Page 1 of 1

Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700 www.tot.com

Product Service Bulletin

Product: 4.06 10K PIPE/SLIP RAM ASSEMBLY 8440-57**A & 8440-57**AB (** CT size specific)

It has come to Texas Oil Tools’ attention that some field locations may be using snap rings (C shaped ring) instead of the recommended spiral retainer ring (TOT part no. 7824-1007). The retainer ring is designed to retain the slips and the compression pin in the rams. The retainer ring will only see a load on opening if the slips have a good bite on the tubing. A snap ring can be pushed out of the groove on the compression pin under this loading allowing the slip and compression pin to fall off. There is also a possibility that the snap ring can be installed incorrectly and not be in the groove of the compression pin.

The TOT retainer ring and compression pin have been successfully tested to 10,800 lbs loading. The TOT retainer ring (part no. 7824-1007) is the only approved retainer ring, no substitution is allowed.

Prepared by: MW Approved by: JD

4.06 10K PIPE/SLIP RAM ASSEMBLY 8440-57**A & 8440-57**AB

PSB-086

( ** CT size specific)

Issue Date: April 2006 Page 1 of 1

Texas Oil Tools 2800 North Frazier PO Box 2327 Conroe, Texas 77305 (936) 523-2700 www.tot.com

Product Service Bulletin

Product: Subsea Actuator Ball Check Housing Part Numbers: 9802-0832L, 9812-1374L and 2006-5035 Incident: A recent incident was reported where the Wedge Lock Ball Check had not seated properly causing higher hydraulic release pressures than required. Once the ram has closed fully and the wedge assembly has locked the ram shut, the ball check assembly is seated to prevent fluid bypass into the actuator assembly. Improper seating of the ball will allow control fluid to circulate through the actuator assembly preventing the ram from opening, ram will try to open as wedge opens. Direction: Drawing on page 2 illustrates the existing ball check housing seat profile. This profile has been in service for an extended period of time with a good working history, in several different Subsea actuator assemblies. Drawing on page 3 illustrates the revised seat profile which can be machined from existing ball check housings. New manufactured ball check housings will have the new seat profile. Texas Oil Tools recommendation for in service actuator assemblies is to perform a test to ensure proper functioning of the assembly. The steps below are for fully assembled actuators currently in service. 1. 2. 3. 4. 5. 6. 7.

Close rams and wedge assembly using hydraulic working pressure. Allow assembly to sit for approximately 5 minutes. Open rams, autolock indicator should move prior to opening system pressure reaching 800 psi. Repeat steps 1 thru 3 Repeat steps 1 thru 3 extending the 5 minute hold period for 2 hours. Open rams, autolock indicator should move prior to opening system pressure reaching 800 psi. If opening pressure is higher than 800 PSI ball check housing should be modified to new seat profile and bench tested per Texas Oil Tools test procedure ATEI-0096 before re-installing on actuator assembly.

8. Once installed onto actuator assembly steps 1 thru 5 must be performed. Release pressure should not exceed 800 PSI.

Prepared by: MW Approved by: JD

Subsea Actuator Ball Check Housing

PSB-087 Issue Date: January 2007 Page 1 of 3

Prepared by: MW Approved by: JD

Subsea Actuator Ball Check Housing

PSB-087 Issue Date: January 2007 Page 2 of 3

Prepared by: MW Approved by: JD

Subsea Actuator Ball Check Housing

PSB-087 Issue Date: January 2007 Page 3 of 3

Texas Oil Tools 700 Conroe Park North Dr. PO Box 2488 Conroe, Texas 77305-2488 (936) 520-5300 www.tot.com

Product Service Bulletin

Product:

4.06” Rear Seal 7804-2537

Discussion: In keeping with Texas Oil Tools policy of continued design improvement, Texas Oil Tools is introducing a new rear seal design profile, Fig. 1. Older design Fig. 2, profile while being an effective sealing mechanism attributed to some difficulty installing and removing the BOP actuator assembly, at times damaging the rear seal.

Action: Supplies of the new rear seal will be limited for approximately 3-4 months until a new multi cavity mold is finished. Continue to use rear seals in stock and field service.

Fig. 1

Fig. 2

Part Number 7804-2537 Rev. R

Old Part Number 7804-2537 Rev. P

Prepared by: MW Approved by: JD

4.06” Rear Seal 7804-2537

PSB-088 Issue Date: January 2007 Page 1 of 1

Texas Oil Tools 700 Conroe Park North Dr. PO Box 2488 Conroe, Texas 77305-2488 (936) 520-5300 www.tot.com

Product Service Bulletin

Product DSV4/DSV6 with J-Slot Bowl mounted to HR680 Injector Incident A recent incident occurred where a TOT DSV4/DSV6 stripper with a J-Slot Slip Bowl interfered with slack chain when bolted to a Hydra Rig HR680 injector. Investigation with Hydra Rig concluded that a 1.00” spacer was needed to eliminate the problem of the chains hitting the slip bowl. Action Taken In order to prevent any potential accidents, Texas Oil Tools is requiring the following action be taken that will be covered under warranty. TOT has designed spacer plate M601000083 which is a 1.00” thick plate that requires installation as shown below. Assemblies in field use can order part number 2001-3906-RW which includes the plate, necessary socket head cap screws and a drawing for upper body rework. Rework will require drilling and tapping upper body to secure the spacer plate using capscrews to the upper body. Strippers can be returned to TOT for modifications.

Prepared by: DJ Approved by: JD

DSV4/DSV6 with J-Slot Bowl mounted to HR680 Injector

D601000180 Issue: June 2007

Page 1 of 1

Product

Texas Oil Tools 700 Conroe Park North Dr. PO Box 2488 Conroe, Texas 77305-2488 (936) 520-5300 www.tot.com

Product Service Bulletin

All Pipe/Slip Rams, 4.06”/5.12” 10k/15k BOPs Reference Texas Oil Tools, Tech Units: 1231, 1236, 1392, 1396, 1411, 1419 Slip Insert p/n 8440-6700 Rev F Discussion This issue began when a customer ordered replacement slip inserts and received slip inserts with the new pyramid tooth profile instead of the original profile. The slips used in pipe/slip rams for 4.06”/5.12” 10k/15k BOPs have been redesigned and improved over time. This bulletin covers pipe/slip ram assemblies for 4.06”/5.12” 10k/15k BOPs. The non-deforming (N.D.) pipe/slip ram assemblies are currently the preferred option offered by Texas Oil Tools. These N.D. pipe/slip ram assemblies are therefore the items which will be held in stock, all other older options will only be manufactured to order. N.D. slip insert p/n 8440-6700 was revised to level F on 5/9/05 to add the vertical interrupted cuts. 4.06” pipe/slip ram assembly is detailed on page 3 and 5.12” pipe/slip ram assembly is detailed on pages 4-6.

Prepared by:JD Approved by:MW Date: March 2008

All Pipe/Slip Rams, 4.06” / 5.12” Blowout Preventers

D601000111-PIB-001/01 Page 1 of 2

Non-Deforming Pipe/Slip Inserts, Interrupted Tooth Slips and Original Slips The original pipe/slip inserts had complete, almost semi-circular teeth that could leave teeth marks on the tubing. The improvement to the interrupted tooth (or pyramid tooth) style of inserts reduced the impressions on the tubing from the slips. N.D. slips were initially introduced for 4.06” Quad BOP Slip Rams via Product Service Bulletin PSB-013 Rev. B, in February 1995. The PSB covered only Quad BOPs. Product Service Bulletin PSB-034 followed in February 1998, and superseded PSB-013. PSP-034 included 4.06” Combi BOP Slip Rams to have N.D. slip inserts. Actions Customers may continue to use slip inserts with the original profile. The original slips may be replaced with the new non-deforming slip inserts. Texas Oil Tool recommends using sets of inserts with matching profiles.

Prepared by:JD Approved by:MW Date: March 2008

All Pipe/Slip Rams, 4.06” / 5.12” Blowout Preventers

D601000111-PIB-001/01 Page 2 of 2

Texas Oil Tools 700 Conroe Park North Dr. PO Box 2488 Conroe, Texas 77305-2488 (936) 520-5300 www.tot.com

Product Service Bulletin

Product BOP 3.06” 4.06” ES, EU and EY Shear Actuator. Incident: A recent incident occurred where a TOT 4.06 ES BOP shear actuator was used during a routine in house shear test which caused excessive profile damage to the coil resulting in a damaged cut section of coil. This incident occurred while the slip rams were holding pipe in place during the shear test. The shear ram cut 1.75” OD coil and continued to travel beyond the desired stopping point causing damage to the cut edge of the coil, additionally the pipe was pushed toward the opposing actuator causing a slight bend in the pipe. Conclusion: During the investigation TOT determined that with the overstroke in the shear actuator a spacer can be installed in the actuator per the drawing below which would prevent coil damage. Spacers may be ordered from Texas Oil Tools for future installation when actuators are disassembled for maintenance. Affected BOP’s shipped by Texas Oil Tools after July 1, 2007, have spacers installed. At present time Texas Oil Tools is recommending but not requiring that this change be made.

Prepared by: JD Approved by: MW

PSBL 3.06” 4.06” ES, EU and EY Shear Actuators

D601000649-PIB-001/02 March 2008

Texas Oil Tools 700 Conroe Park North Dr. PO Box 2488 Conroe, Texas 77305-2488 (936) 520-5300 www.tot.com

Product Service Bulletin

November 5, 2009 PRODUCT: 4.06” 15M Quick Disconnect, Part No. JK46-1GL6X REFERENCE: Tech Unit 1480 PROBLEM: There has been a reported incident with the connection between the locking dogs and stinger of the 4.06” 15,000psi working pressure JK46 Quick Disconnect. The incident occurred as the Quick Disconnect was pressured up, the stinger was ejected from its seated position. DISCUSSION: The investigation of the incident shows that the reason for this occurrence is that the stinger was not properly latched by the locking dogs. This can be partially attributed to relying on the springs to fully return the sleeve and lock the dogs in place. The other factor related to the disconnection of the stinger is the absence of a visual indicator so the operator can see that the locking dogs are in the fully locked position. ACTION TAKEN: A design modification was initiated to the Quick Disconnect so that an indicator is attached to the sleeve directly below the hydraulic ports. A tag is attached to the outer housing, which shows the locations of the “locked” and “unlocked” positions. As the sleeve is pressured closed, the indicator attached to it will line up with the corresponding position on the tag, signaling the operator when the locking dogs are locked and unlocked. Tech Unit 1480 was updated to provide instructions on how to install the indicator and to clarify the intended use of the springs. The following parts were added to the Quick Disconnect BOM to include the indicator: Description SHCS INDICATOR TAG

Prepared by: AH Approved by: JD

New Part No. 7947-0943 M602009-0004 M602009-0005

4.06” 15M Quick Disconnect, Part No. JK46-1GL6X

D601001227-PIB-001/02 Page 1 of 4

Prepared by: AH Approved by: JD

4.06” 15M Quick Disconnect, Part No. JK46-1GL6X

D601001227-PIB-001/02 Page 2 of 4

Prepared by: AH Approved by: JD

4.06” 15M Quick Disconnect, Part No. JK46-1GL6X

D601001227-PIB-001/02 Page 3 of 4

Prepared by: AH Approved by: JD

4.06” 15M Quick Disconnect, Part No. JK46-1GL6X

D601001227-PIB-001/02 Page 4 of 4

Texas Oil Tools 700 Conroe Park North Dr. PO Box 2488 Conroe, Texas 77305-2488 (936) 520-5300 www.tot.com

Product Service Bulletin

Product: Ram Guide part number 8741-0128B, Texas Oil Tools trace number 402251 The Ram Guide is used on dual combi shear seal. Discussion: A recent review of material test reports revealed that Ram Guide 8741-0128B trace number 402251 was installed with incorrect material hardness in dual combi shear seal actuators. Six BOP’s which are identified below by serial number orders shipped from Texas Oil Tools after October 2007 may be affected. Action Required: Inspection of BOP serial numbers to those below will identify which BOP is required to have the ram guide changed. If any equipment serial numbers match remove from service and contact your Texas Oil Tools sales representative for replacement parts. TOT Order No. 404761 400274 400274 400274 401800 401801 405692

Prepared by: JD Approved by: MW

Serial No.

Part No.

S/N 082-27117 S/N 074-25863 S/N 074-25861 S/N 074-25859 S/N 081-26819 S/N 081-26803 S/N 082-27098

8741-0128B 8741-0128B 8741-0128B 8741-0128B 8741-0128B 8741-0128B 8741-0128B

Ram Guide part number 8741-0128B, Texas Oil Tools trace number 402251

Trace No. 402251 402251 402251 402251 402251 402251 402251

Qty. 2 PCS. 2 PCS. 2 PCS. 2 PCS. 2 PCS. 2 PCS. 2 PCS

D601000454-PIB-001/02 Page 1 of 1 Rev. 02 – Added View, Removed Pipe/Slip

PSBL-BACK UP RING 7992-1644 FOR CB 44 UNION

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

CLIENT DOCUMENT NUMBER

Client Document Number

www.nov.com

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco DOCUMENT NUMBER

D601002005-PIB-001

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

REV

01

Document number Revision Page

D601002005-PIB-001 01 2 of 3

REVISION HISTORY

01

12-Jan-10

Rev

Date (dd.mm.yyyy)

Initial Release

CHANGE DESCRIPTION Revision 01

Change Description First issue

www.nov.com

Reason for issue

GS

JD

MW

Prepared

Checked

Approved

Document number Revision Page

D601002005-PIB-001 01 3 of 3

Product: Back Up Ring 7992-1644 for CB 44 union Incident: Texas Oil Tools back up ring 7992-1644 for CB 44 union was manufactured from an incorrect material. Incorrect material is glass filled Teflon that is white in color. Installation is difficult due to the material properties of the glass filled Teflon that do not allow the ring to stretch and return to seat properly in the groove. Required Action: It is required that any 7992-1644 back up ring that are white in color be returned to Texas Oil Tools to be replaced by new parts made from the correct material.

www.nov.com

PSBL- FRONT SEAL 7804-3600, 7804-3700, & 7804-3900

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

CLIENT DOCUMENT NUMBER

Client Document Number

www.nov.com

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco DOCUMENT NUMBER

D601002023-PIB-001

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

REV

02

Document number Revision Page

D601001023-PIB-001 02 2 of 5

REVISION HISTORY

02

03-Feb-2010

Added Drawings

01

15-Jan-2010

Initial Release

Rev

Date (dd.mm.yyyy)

CHANGE DESCRIPTION Revision 01 02

Change Description First issue Added last two photos

www.nov.com

Reason for issue

GS

N/A

JD

GS

MW

JD

Prepared

Checked

Approved

Document number Revision Page

D601001023-PIB-001 02 3 of 5

Product: BOP Front Seal 7804-3600, 7804-3700 & 7804-3900

PO # on front seal bag 417381, 416474 or 417515. Incident: An incident has been reported to Texas Oil Tools where the above mentioned BOP front seals were difficult to install. Upon installation and subsequent removal it was noticed that rubber along the edge of the front seal plates was broken off. During inspection parts were identified as not having a radius along the side of the seal equal to that of a BOP ram bore. Root cause of this is that the incorrect seals were molded from a non conforming mold. Required Action: Following are two photos showing the back side of the front seals. Identification arrows point to injection points that show the dissimilarities in the front seal molds used. Seals visually indentified as being incorrect should be returned to Texas Oil Tools for replacement. Third photo shows a red NOV/TOT Q.A. Stamp which also indicates part is acceptable regardless of mold used.

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D601001023-PIB-001 02 4 of 5

Document number Revision Page

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D601001023-PIB-001 02 5 of 5

Product Service Bulletin (PIB)

PSBL-Blade to Blade Seal EZ44 P

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601002510-PIB-001

01

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Document number Revision Page

D601002510-001 01 2 of 3

REVISION HISTORY

01

04-June-10

Rev

Date (dd.mm.yyyy)

Initial Release

CHANGE DESCRIPTION Revision 01

Change Description First issue

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D601002510-001 01 3 of 3

PRODUCT: Blade to Blade seal EZ44 Part No. 503682/005 INCIDENT: Texas Oil Tools has discovered blade to blade seal 503682/005 used in EZ44 BOP may have been molded incorrectly. Below drawings represent both the incorrect and correct profile for the seal. ACTION TAKEN: All blade to blade seals molded under PO number 411101 cure date 6/2008 should be inspected per the below drawings to ensure they are correct. This information can be found on the product packaging label. If there is any doubt when identifying the parts please return them to TOT sales for exchange.

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PRODUCT SERVICE BULLETIN

PSBL-4.06 10M DSQ4 STRIPPER

DSQ4 SECONDARY M-SEAL

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601005432-PIB-001

01

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D601005432-PIB-001 Rev / 01 P a g e | 2 of 3 REVISION HISTORY

01 Rev

11/March/2011 Initial Release Date (dd.mm.yyyy)

CHANGE DESCRIPTION Revision 01

Change Description Initial Release

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D601005432-PIB-001 Rev / 01 P a g e | 3 of 3 Product: DSQ4 4.06” 10M Stripper Incident: A recent incident has been reported to TOT involving the backup M-seal on a DSQ4 stripper. The backup M-seal is designed to be a replacement seal should the primary M-seal be damaged during packer replacement. Installation of the backup seal is done by simply removing the primary M-seal from the piston and moving the backup M-seal from its groove and installing into the primary M-seal groove. When a situation arises, where the primary M-seal leaks, fluid should bypass the backup M-seal. In this case the backup M-seal held pressure giving no indication of a leak by the primary M-seal. Conclusion: During the investigation TOT determined that the groove for the backup M-seal was sized such that the seal would retain pressure. A design change has been made to the backup M-seal groove on piston 2002-0148. Design change ensures that the M-seal elastomer volume is at least 25 percent less than the groove. To aid in the removal of the backup M-seal a taper is also machined on the front side of the groove as shown on the drawing below. For piston modification or replacement contact TOT sales.

2002-0148-RW-DAD

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PRODUCT SERVICE BULLETIN

PSBL-3.06, 4.06 SHEAR/SEAL BLADES

8801-1144, 8801-0144, 8703-7145, 8703-7245, 8801-0141, 8801-0151, 8801-1141 & 8801-1151 SHEAR/SEAL BLADES - VENDOR AFFECTED CARBURIZING PROCESS, TO BE RETURNED TO TEXAS OIL TOOLS FOR REPLACEMENT

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601005576-PIB-001

04

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D601005576-PIB-001 Rev / 04 P a g e | 2 of 4 REVISION HISTORY

04

21/April/2011

Revision

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20/April/2011

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19/April/2011

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15/March/2011 Initial Release Date (dd.mm.yyyy)

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CHANGE DESCRIPTION Revision 01 02 03 04

Change Description Initial Release Added 3.06” & Seal to Document Name; Listed out all Part Numbers; Added Blades Affected Dates; Added Shear Test CT Size; Add BOP Size to Chart Revised Incident Paragraph; Revised Investigation Paragraph; Add CT Size to Chart Correct Yield

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D601005576-PIB-001 Rev / 04 P a g e | 3 of 4 PRODUCT: Blades for Shear/Seal: 3.06” & 4.06” Part Numbers: 8801-1144, 8801-0144, 8703-7145, 8703-7245, 8801-0141, 8801-0151, 8801-1141 & 8801-1151

INCIDENT: A recent incident has been reported to Texas Oil Tools involving shear blades 8801-1144 and 8801-0144 in Combi BOPs when pressure testing to a maximum working pressure of 15,000 psi. The reported incident involved crack like indications on the upper blade bevel above the cutting edge. Indications were visible to the naked eye. Although the indications were visible, all blades passed shear tests on heavy wall 1.75” 144 ksi yield Coil Tubing and subsequent pressure testing at Texas Oil Tools. INVESTIGATION: Examination performed at a metallurgical laboratory revealed that the carburizing process done by one vendor was producing surface hardening much deeper into the blade at a higher hardness. This process was determined to be the root cause of the cracks. The blades manufactured at this vendor are from the following timeframes: 3.06” Blades from 7/23/2008 thru April 2011 4.06” Blades from 10/1/2008 thru April 2011 CONCLUSION: Due to this incident Texas Oil Tools has identified batch numbers associated with this process and has determined to request any blades which are identified by the below batch numbers be returned to Texas Oil Tools for replacement. See photos for assistance in identifying these blades.

BATCH NUMBER T208112, T200325, T200868 406978, 412070 406978, 412070 406979, 412073, 418293 406980, 412071, 418293 406981, 412072, 413516 406979, 412073, 418293 406980, 412071, 418293 406981, 412072, 413516

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PART NUMBER 8801-1144 & 8801-0144 8703-7145 8703-7245 8801-0141 8801-0144 8801-0151 8801-1141 8801-1144 8801-1151

COMBI BOP 4.06” 3.06” EH34 & EK34 3.06” EH34 & EK34 4.06” 4.06” 4.06” 4.06” 4.06” 4.06”

CT SIZE 1.75” ALL ALL 1.50” 1.75” 2.00” 1.50” 1.75” 2.00”

D601005576-PIB-001 Rev / 04 P a g e | 4 of 4 Side View 8801-1144 Shear Blade Batch # 412071

Bottom View 8801-1144 Shear Blade Batch # T200325

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PRODUCT SERVICE BULLETIN

PSBL-EZ4R BLADE MODIFICATION

EZ44 BOWEN SLIDELOCK 4.06” 10M DUAL BOP SHEAR/SEAL RAM ASSEMBLY

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 700 Conroe Park North Drive Conroe, TX 77305 Phone 936-520-5300 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

EZ4R-VS61A-PIB-001

03

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EZ4R-VS61A-PIB-001 Rev / 03 P a g e | 2 of 5 REVISION HISTORY

03

03/Jan/2012

Revision

CP

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27/May/2011

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24/May/2011

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CHANGE DESCRIPTION 01 02 03

Initial Release Added countersunk screw part number; product service bulletin on cover .300 to .315 in 503679-005-DAD-002/03 (New Rev of Drawing)

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MW

EZ4R-VS61A-PIB-001 Rev / 03 P a g e | 3 of 5 PSBL- EZ4R BLADE MODIFICATION EZ4R-VS61A EZ44 BOWEN SLIDELOCK 4.06” 10M DUAL BOP SHEAR/SEAL RAM ASSEMBLY

Blade – 503679/005 Blade to Blade Seal – 503682/005

Incident: Ram assembly EZ4R-VS61A was sent in to TOT with damage to blade seal 503682/005. Investigation determined that the blade seal could lift up during operation. When the rams were operated the opposing blade would collide with the blade seal causing the damage that was reported. Design review concluded that there needed to be a way to retain the blade seal in its proper location and not affect the functionality or integrity of the ram assembly. Conclusion: Modification was made to blade seal 503682/005 to add slots on each side of the seal to accept a countersunk screw 7948-0294 (Qty 2) that would retain it to blade 503679/005. After the modifications were made the rams were cycle and pressure tested in accordance with test procedure M60EZ4R-VS61A-PRO-001. After testing, the ram components were visually inspected and photographed. The Below drawing shows modification to blade and blade to blade seal. Photo shows blade and seal assembled with capscrews. Required Action: Blade to blade seal 503682/005 can be returned to TOT for replacement or modification. Blade can be modified per below drawing by returning to TOT for modification. Contact TOT sales for modification or replacement instructions.

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EZ4R-VS61A-PIB-001 Rev / 03 P a g e | 4 of 5

503679-005-DAD-002/03

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EZ4R-VS61A-PIB-001 Rev / 03 P a g e | 5 of 5

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PRODUCT SERVICE BULLETIN

PSBL-EZ44 SLIDE LOK BOP HANDLE

EZ44 SLIDE-LOK BOP HANDLE PART NO: M601010596 REPLACING 2005-0267

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollock Conroe, TX 77305 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601009503-PIB-001

04

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D601009503-PIB-001 Rev / 04 P a g e | 2 of 3 REVISION HISTORY

04

05/June/2013

Revision

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05/June/2012

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24/May/2012

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13/Feb/2012

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CHANGE DESCRIPTION Revision 01 02 03 04

Change Description Initial Release Added non clearance note for change rods. In conclusion describe how handle has been bent outward; New drawing New design and Part No. M601010596

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D601009503-PIB-001 Rev / 04 P a g e | 3 of 3 PSBL-EZ44 SLIDE LOK BOP HANDLE PRODUCT: EZ44 SLIDE-LOK BOP INCIDENT:

A problem has occurred on the EZ44 Slide-Lok BOP where the handle (Part no. 2005-0267) used to lock the rams in the closed position comes into contact with the locking sleeve on the shear/seal actuator assembly before locking the ram into the fully closed position. Revised Handle Design for EZ44 Slide Lok BOP: Texas Oil Tools has re-designed the handle for the EZ44 BOP to be more in line with current handles provided in other TOT series of BOP’s. ACTION: New handle part number is M601010596, replacing handles 2005-0267. Contact TOT sales for replacement handles.

M601010596-GAD-001 www.nov.com

PRODUCT SERVICE BULLETIN

PSBL-EZ44 S/S RAM OUTER SEAL

M601009621 EZ44 Slide-Lok Shear/Seal Ram Outer Seal

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollock Conroe, TX 77305 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601009804-PIB-001

01

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D601009804-PIB-001 Rev / 01 P a g e | 2 of 3 REVISION HISTORY

01

22/May/2012

Rev

Date (dd.mm.yyyy)

Initial Release

CHANGE DESCRIPTION Revision 01

Change Description Initial Release

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D601009804-PIB-001 Rev / 01 P a g e | 3 of 3 Product: EZ44 Slide-Lok Shear/Seal Ram Outer Seal M601009621 22/May/2012 Discussion: Slide-Lok BOP EZ44 shear seal ram outer seal has recently undergone product improvements. Overall design shape of the outer seal has been retained, with improvement being made to the elastomer compound used with a new mold. New compound is an improved HNBR with increased anti extrusion properties, replacing current dual durometer design material. Improvement has eliminated existing molded interface tie line between the base compound and higher durometer insert. With this improved elastomer the part number for the rear seal has been changed. The new part number is M601009621, replacing all 503989 numbers previously used. Validation: Validation testing has been completed on the improved seal with 455 open/close cycles with 65 low pressure (300 psi) and high pressure (10,000 psi) hydrostatic tests, with no pressure leaks. Test was conducted using the new outer seal along all existing seals currently being used in the Slide- Lok BOP. Action: Texas Oil Tools currently has new outer seal parts (M601009621) in stock and Tech Unit 1472 has been revised to reflect this change. For seal replacement contact TOT sales.

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PRODUCT SERVICE BULLETIN

PSBL-EZ44 SEAL BLADE TO RAM BODY

EZ44 SLIDE-LOK SEAL BLADE TO RAM BODY 503683-005

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollock Conroe, TX 77305 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601009806-PIB-001

01

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D601009806-PIB-001 Rev / 01 P a g e | 2 of 5 REVISION HISTORY

01

23/May/2012

Rev

Date (dd.mm.yyyy)

Initial Release

CHANGE DESCRIPTION Revision 01

Change Description Initial Release

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D601009806-PIB-001 Rev / 01 P a g e | 3 of 5 PRODUCT: EZ44 SLIDE-LOK SEAL BLADE TO RAM BODY 503683-005 INCIDENT: A recent incident was reported to TOT where seal blade to ram body showed signs of elastomeric extrusion that may have contributed to an unsuccessful shop low pressure test.

VALIDATION: Review of the seal molding process and elastomer resulted in improved molding processes. Preparation of the Inconel metal inserts prior to bonding has been revised to correspond with a new bonding agent for the elastomer. Additionally we have increased the elastomer durometer by 5 points to help reduce elastomer extrusion. Texas Oil Tools has conducted cycle testing on the revised seal using existing Outer Seals (see PIB D601009804) and the new Outer Seal M601009621. Test was concluded while using only one seal blade to ram body with no pressure leaks during the twenty (20) pressure test. See photos (pages 4 & 5) for before and after test results. ACTION: Texas Oil Tools currently has new seal: blade to ram body in stock. If seals are required, contact TOT sales.

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D601009806-PIB-001 Rev / 01 P a g e | 4 of 5

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D601009806-PIB-001 Rev / 01 P a g e | 5 of 5

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PRODUCT SERVICE BULLETIN

PSBL-3.06 10M ES TRIPLE BOP (Guide Rod)

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollock Conroe, TX 77305 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601009873-PIB-001

01

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D601009873-PIB-001 Rev / 01 P a g e | 2 of 3 REVISION HISTORY

01

26/June/2012

Rev

Date (dd.mm.yyyy)

Initial Release

CHANGE DESCRIPTION Revision 01

Change Description Initial Release

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D601009873-PIB-001 Rev / 01 P a g e | 3 of 3 BOP: M60ES34-Z349XL Incident There was in incident in the field when a customer opened the actuators of a 3.06 10M ES Triple BOP and found damage to the ram bore on the body. The damage was due to an issue where the guide rod sat slightly lower than the outer diameter ram bore creating interference and scratching the bore upon installation of the rams. Figure 1 below shows the pipe slip guide rod damage.

Figure 1 – M602009-0015B Damaged Pipe Slip Guide Rod Discussion It was determined upon investigation that the original design of the guide rod, ram body, and bonnet together created interference large enough to produce damage to the ram bore of the body. It was decided to make changes only to the ram body and guide rods and to leave the bonnet in its original state. In order to reduce the interference TOT revised the pipe slip guide rod (M602009-0015B) and the shear seal guide rod (M602009-0022B) to a smaller outer diameter and sent replacement parts to the customer. Completely removing all interference at this point was not an option because the size of the slot on the ram body would be too large allowing for an unacceptable amount of rotation in the rams. Conclusion To completely remove any interference on all future models of this BOP TOT revised the both the pipe slip and shear seal guide rods as well as the pipe slip ram body (M602009-0300B) and the shear seal ram body (M602009-5444AB). The ram bodies had to be revised to make the guide rod slot smaller so the rams could not rotate around the smaller diameter of the guide rods. This method removed the interference and allows for a .007 inch clearance in both the pipe slip and shear seal cases. Contact TOT for replacements parts.

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PRODUCT SERVICE BULLETIN

PSBL-7.06 15M BX156 X BX 169

M601005300B 7.06 15M BX156 X 5.12 15M BX169 SPOOL

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollock Conroe, TX 77305 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

M601005300B-PIB-001

01

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M601005300B-PIB-001 Rev / 01 P a g e | 2 of 3 REVISION HISTORY

01

05/June/2012

Rev

Date (dd.mm.yyyy)

Initial Release

CHANGE DESCRIPTION Revision 01

Change Description Initial Release

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M601005300B-PIB-001 Rev / 02 P a g e | 3 of 3 PRODUCT: 7.06 15M BX156 x 5.12 15M BX169 Spool – M601005300B AFFECTED ASSEMBLY: •

M60CE76-0566B

INCIDENT: It was recently discovered that the API 6A specified flange thickness of the 7.06 15M BX-156 flange on drawing M601005300B-DAD-001 Rev.01 was below the API 6A minimum required thickness.

ACTION: The thickness of the 7.06 15M BX-156 flange should be measured and be within the API 6A thickness range of 4.69”/4.81”. If the total flange thickness does not fall within the given range, contact Texas Oil Tools to arrange for a replacement spool.

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PRODUCT SERVICE BULLETIN

PSBL-SH 7.06” PEEK SIDEPACKERS

2002-1481P, 2002-1482P 2002-1483P, 2002-1484P 2002-1481-MLK-694K & 2002-1482-MLK-694K REPLACEMENT OF SAFETY HEAD MLK SIDE PACKERS WITH PEEK SIDE PACKERS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollock Conroe, TX 77305 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601010144-PIB-001

01

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D601010144-PIB-001 Rev / 01 P a g e | 2 of 5 REVISION HISTORY

01

22/Aug/2012

Rev

Date (dd.mm.yyyy)

Initial Release

CHANGE DESCRIPTION Revision 01

Change Description Initial Release

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Reason for issue

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D601010144-PIB-001 Rev / 01 P a g e | 3 of 5 PRODUCT: PEEK SIDE PACKERS: 2002-1481P, 2002-1482P, 2002-1483P, 2002-1484P MLK SIDE PACKERS: 2002-1481-MLK-694K & 2002-1482-MLK-694K SUMMARY: Memo is a recommendation for replacing existing Safety Head MLK side packers 2002-1481-MLK-694K and 20021482-MLK-694K with PEEK side packers 2002-1481P,2002-1482P,2002-1483P and 2002-1484P. Seals are composed of exact same elastomer however mechanical layout of the seal is slightly different. Existing side packer seals have a Kevlar mesh on the front face and inboard face of the side packer. Kevlar mesh is not used in the PEEK side packer replacement. PEEK side packers have a PEEK insert found on the inboard side of the packer. Both side packers are molded with the same elastomer. INVESTIGATION/HISTORY: Initial development and testing on the Texas Oil Tools Safety Head was performed in 2006 using Kristen condensate for the test media. Testing was done to qualify a safety head for a four (4) well batch intervention. Three test scenarios using different seal packages were decided upon based on initial screen test that concluded these were the best options for successful completion of the test. One of these scenarios was the use of a multi layered Kevlar side packer known as the MLK side packer. The MLK side packer was developed to function at high temperatures during the 4 well batch qualification tests. Test temperature range was 34 degrees F to 250 degrees F. MLK side packers successfully completed all phases of the test program. While successfully passing the 4 well batch qualification test scenarios the seals have been inherently difficult to mold and achieve repeated ambient temperature gas test during FAT. One main contributing factor for failure during the FAT gas test is the Kevlar mesh. During molding Kevlar is layered up with rubber and placed in the mold causing several opening and closing sequences during molding, each time allowing the Kevlar to move and become inconsistent in each part. Energizing the rubber thru the Kevlar mesh is restricted by the Kevlar not allowing rubber to fill extrusion gaps and seal improperly. Kevlar mesh, if not molded correctly can allow gas to migrate over time. MLK side packers have been used for years with excellent results however during the 4 well batch qualifications another seal package was tested that performed almost equally well and would fit the need of current operations. Side packers referred to as PEEK are Kristen 1 design and have the same Elastomer compound as the MLK side packers. PEEK side packers held gas tight integrity at the fourth batch test sequence from approximately 38 degrees F (+3.3 C) down to 34.1 degrees F (+1 C) for approximately 56 minutes, passing all previous test scenarios similar to the MLK side packers. Unlike the MLK side packers PEEK side packers consistently pass FAT gas testing and finished parts from molding are consistent in mold makeup.

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D601010144-PIB-001 Rev / 01 P a g e | 4 of 5 CONCLUSION: Texas Oil Tools recommends replacing MLK side packers with PEEK side packers as operational situations allow and for spare parts. PEEK side packers will now be the primary seal package superseding the MLK side packer. See page 5 for PEEK and MLK seal package Bill of Materials. ACTION: Customer can contact TOT to arrange replacement of MLK seals manufactured in 2012 (PO 432103 and higher). Seals must be in new condition and in original packaging to qualify for PEEK side packer replacement. TAKEN FROM RPT-0031 REVISION D:

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D601010144-PIB-001 Rev / 01 P a g e | 5 of 5 ET7R-SK04XP PEEK SEAL PACKAGE ITEM 1 2 3 4 5 6 7

PART NUMBER 2002-1481P 2002-1482P 2002-1483P 2002-1484P 2002-1490-850 2002-1485P 2000-2779P

QTY 1 1 1 1 1 2 2

DESCRIPTION UPPER RIGHT SIDE PACKER UPPER LEFT SIDE PACKER LOWER RIGHT SIDE PACKER LOWER LEFT SIDE PACKER DYNAMIC SEAL STATIC SEAL REAR SEAL

ET7R-SK03X MLK SEAL PACKAGE ITEM 1 2 3 4 5

PART NUMBER 2002-1481-MLK-694K 2002-1482-MLK-694K 2002-1490-850 2002-1485P 2000-2779P

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QTY 1 1 1 1 1

DESCRIPTION UPPER & LOWER RIGHT SIDE PACKER UPPER & LOWER LEFT SIDE PACKER DYNAMIC SEAL STATIC SEAL REAR SEAL

PRODUCT SERVICE BULLETIN

PSBL-4.06 8801 SHEAR BLADE MOD

TEXAS OIL TOOLS 4.06” SHEAR SEAL RAM BLADE DESIGN IMPROVEMENT BLADES: LOW TEMP NITRILE, 8801-05** & 8801-06** LOW TEMP VITON, 8801-07**B & 8801-08**B VITON, 8801-07** & 8801-08** RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollock Conroe, TX 77305 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601010444-001

01

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D601010444-PIB-001 Rev / 01 P a g e | 2 of 4 REVISION HISTORY

01

07/Mar/2013

Rev

Date (dd.mm.yyyy)

CHANGE DESCRIPTION 01

Initial Release

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D601010444-PIB-001 Rev / 01 P a g e | 3 of 4 PSBL-4.06 8801 SHEAR BLADE MOD TEXAS OIL TOOLS 4.06” SHEAR SEAL RAM BLADE DESIGN IMPROVEMENT

Discussion: Texas Oil Tools Engineering Test Lab has performed extensive testing on our 4.06” Shear/Seal Blades for several months, replicating actual well bore temperature scenarios by cooling and heating an ES46 BOP to temperatures ranging from -25˚F to 350˚F. Hydrostatic testing at temperature was done to well bore pressure up to 15,000 PSI. The temperature during the test was monitored using thermocouples placed inside the BOP to record actual bore temperature. Testing was conducted initially on our standard Low Temp Nitrile and Viton elastomer formulations that have been used for many years with excellent results in field conditions.

Discovery:

At the conclusion of initial low temperature testing to -25˚F on the Low temp Nitrile and Viton shear blades, it was determined that the elastomer saw increased rubber pressure due to hardening of the rubber at low temperatures. Performance of the blades elastomeric properties at combined -25˚F and 15,000 PSI hydrostatic did not meet TOT operating and quality standards. In order to improve blade performance, TOT modified blades as shown in photos below to increase elastomer performance and durability by decreasing rubber pressure. On all Low Temp Nitrile blades two holes were added to the lower blade to reduce elastomeric rubber pressure. On all Viton molded blades three holes were added to the lower blade. Additionally TOT has introduced a new Low Temp Viton that will operate at temperatures ranging from -25˚F up to 250˚F.

Conclusion:

Based on testing Texas Oil Tools will issue new temperature operating guidelines for elastomers used in the 4.06” Shear Seal blade part number series 8801-**** Low Temp Nitrile 70 Duro: -25˚F to 250˚F. Use existing blade numbers, 8801-05** and 8801-06** Low Temp Viton 70 Duro: -25˚F to 250˚F. New blade part numbers issued, 8801-08**B and 880107**B. Viton 80 Duro: 40˚F to 350˚F. Use existing blade part numbers, 8801-07** and 8801-08**.

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D601010444-PIB-001 Rev / 01 P a g e | 4 of 4

TEXAS OIL TOOLS 4.06” SHEAR SEAL RAM BLADE DESIGN IMPROVEMENT

Low Temp Nitrile

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Standard Viton & Low Temp Viton

PRODUCT SERVICE BULLETIN

PSBL- BOP MANUAL LOCKS, TORQUE TEXAS OIL TOOLS, BOP MANUAL LOCKS, TORQUE RATING

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

CLIENT DOCUMENT NUMBER

Client Document Number

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REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco DOCUMENT NUMBER

D601010882-PIB-001

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

REV

02

Document number Revision Page

D601010882-PIB-001 02 2 of 3

REVISION HISTORY

02

06-May-13

Revision

rs

01

06-May-13

Initial Release

Rev

Date (dd.mm.yyyy)

Reason for issue

CHANGE DESCRIPTION Revision 01 02

Change Description First issue Update document “Incident” and “Action Required”

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Document number Revision Page

D601010882-PIB-001 02 3 of 3

PSBL- BOP MANUAL LOCKS, TORQUE Incident: Texas Oil Tools has been notified of an incident where pipe/slip rams on a dual combi BOP were hydraulically set and then the manual locks were set hand tight. After a period of time the BOP hydraulic system pressure was bled off and at this time the tubing slipped through the pipe/slip rams. Discovery: Testing has been conducted at Texas Oil Tools where manual locks are closed hand tight and given torque value to determine optimum holding capacity using manual locks. Coiled tubing used during testing was both 1.75”, QT900 and QT 1300. Testing was conducted where rams are closed hydraulically to full rated working pressure, hydraulic pressure is maintained while the manual locks are closed. Hydraulic pressure was then bled off to zero PSI and pipe heavy load is applied to slips. Closing manual locks hand tight will not properly hold coiled tubing at eighty percent of pipe yield. Closing manual locks hand tight with no additional torque applied, slips will hold less than 50 percent of coiled tubing yield. Manual locks were then torqued to 200 ft/lbs under full hydraulic pressure followed by bleeding off hydraulic pressure to zero psi. Pipe heavy load of eighty percent of pipe yield was then applied with no slippage across slips. Action Required: After testing and analysis Texas Oil Tools is recommending that when setting manual locks on BOP’s a torque of 200ft/lbs. be applied to the manual locks while the hydraulic system pressure is still applied to the rams. Although Texas Oil Tools recommends keeping hydraulic system pressure applied at all times even when the manual locks are set, with the manual locks torqued to 200ft/lbs. BOP system pressure can be bled off if required and the rams will still perform to their design rating.

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PRODUCT SERVICE BULLETIN

PSBL-ES64 MANUAL LOCK SCREW

ES64 PIPE, SLIP, PIPE/SLIP ACTUATOR MANUAL LOCK SCREW IN ASSEMBLIES: M60ES64-ACT2XL M60ES64-ACT3XL

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollock Conroe, TX 77305 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601011008-PIB-001

01

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D601011008-PIB-001 Rev / 01 P a g e | 2 of 5 REVISION HISTORY

01 Rev

04/June/2013 Initial Release Date (dd.mm.yyyy)

CHANGE DESCRIPTION Revision 01

Change Description Initial Release

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Reason for issue

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D601011008-PIB-001 Rev / 01 P a g e | 3 of 5 PRODUCT: ES64 Pipe, Slip, Pipe/Slip Actuator SCOPE: It has been discovered that on the ES64 pipe, slip and pipe/slip model actuators the manual lock screw (2002-3772B) will not engage the tail rod when the main piston is in the full closed position. As seen in figure (1) there is a 1.03 inch gap between the lock screw and tail rod. This could allow the main piston to move away from the coil tubing in the event of a hydraulic failure. The affected TOT assembly numbers are as follows.  Customer Assemblies o M60BJ-ES64Z611XL, Serial # 103-31951 o M60BJ-ES64Z612XL, Serial # 131-40377 o M60BJ-ES64Z731XL, Serial # 103-31946

 Actuator Assemblies o M60ES64-ACT2XL – ES64: PIPE, SLIP, P/S ACT o M60ES64-ACT3XL – ES64: 6.375 10M P/S ACTUATOR

Figure (1)

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D601011008-PIB-001 Rev / 01 P a g e | 4 of 5 ACTION: The old lock screw, 2002-3772B, will be replaced by a new lock screw M601011006B and should be replaced immediately per procedure on page 5 of 5. The installation and function of the new lock screw will be identical to the old. Once installed the new lock screw will correctly engage the tail rod when the main piston is fully closed, see red marked figure (2). Contact TOT sales for immediate replacements parts.

Figure (2)

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D601011008-PIB-001 Rev / 01 P a g e | 5 of 5 Steps for replacement are as follows. 1. 2. 3. 4. 5.

Remove nut from hand wheel. Remove hand wheel from lock screw. Remove socket head cap screws from lock screw housing. Remove lock screw housing from end cap and remove lock screw. Assembly is reverse of dissassembly

NOTE: Torque value for re installing socket head cap screw is 300 ft lb.

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PRODUCT SERVICE BULLETIN

PSBL-7949-3221B BONNET BOLT

7949-3221B BONNET BOLT SPLIT DOWN CENTER - LENGTH OF BONNET BOLT

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollock Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

7949-3221B-PIB-001

01

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7949-3221B-PIB-001 Rev / 01 P a g e | 2 of 5 REVISION HISTORY 01 Rev

03/Feb/2014 Initial Release Date Reason for issue

CHANGE DESCRIPTION Rev 01

Description of Change Initial Release

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7949-3221B-PIB-001 Rev / 01 P a g e | 3 of 5 Product: 7949-3221B BONNET BOLT, EM34-L349 QUAD BLOWOUT PREVENTER Incident: Reported field incident where bonnet bolt 7949-3221B was noticed to have split down the length of the bolt. This occurred on purchase order PO#431419. See figures A - D. Action: The cause of this occurrence is currently under investigation and the root cause has yet to be determined. Texas Oil Tools feels this issue is urgent enough that customers who have bonnet bolts from this purchase order be made aware to acquire replacements. Customers that have received bonnet bolts from PO# 431419 are to contact TOT Sales to obtain replacements. It would be beneficial to all parties that the bolts be sent back to TOT for further analysis and root cause of the issue.The PO number can be found low stress stamped on one side of the bolt along with the part number and revision level.

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7949-3221B-PIB-001 Rev / 01 P a g e | 4 of 5 7949-3221B BONNET BOLT

FIGURE A

FIGURE B

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7949-3221B-PIB-001 Rev / 01 P a g e | 5 of 5

FIGURE C

FIGURE D

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PRODUCT SERVICE BULLETIN

PSBL-SLIP INSERT PROD. IMPROVE

9206-25** Slip Insert Design Improvement

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601012441-PIB-001

01

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D601012441-PIB-001 Rev / 01 P a g e | 2 of 3 REVISION HISTORY 01 Rev

12/Aug/2014 Initial Release Date Reason for issue

CHANGE DESCRIPTION Rev 01

Description of Change Initial Release

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CP Prepared

MD Checked

JD Approved

D601012441-PIB-001 Rev / 01 P a g e | 3 of 3 Product: 5.12” ES Blowout Preventer Ram Slip Insert – 9206-25** (** refers to Line Size code). Incident: A customer reported that the slip insert guide from an ES56 quad blowout preventor was bent outward. It was determined that the Socket Head Cap Screws securing the guide plate to the slip had been sheared. This un-secured the slips to the ram body allowing the guide to move. Cause: The slip guide plates were designed only to secure the slip to the ram and guide the coil to the center of the slips. When closed on oversized objects, an interference fit would cause the force from the actuator to be transferred to the socket head cap screws, resulting in the shear failure of the screws. Action: Texas Oil tools has developed and tested a new solid-piece design for this slip. The new design removed the socket head cap screw connection, allowing for solid metal reinforcement. See figure 1. All future 9206-25** slips will be of the new design (Rev. H as of this PSB). Customers can contact the Texas Oil Tools sales department for replacement of the old slip design if desired.

Figure 1: Old vs New Gam Guide Design

Special Note: This design will only improve the durability of the slip guide; it is important that properly sized slips are used for each coil size.

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PRODUCT SERVICE BULLETIN

PSBL-EGA72 PISTON SET SCREW

ADDITION OF SET SCREW 7942-0402 TO PISTON/PISTON ROD ASSEMBLIES AFFECTED: EGA72 DUAL COMBI BLOW OUT PREVENTER M60EGA72-N72SX, SERIAL NUMBER 143-45630 EGA72 SINGLE COMBI BLOW OUT PREVENTER M60EGA72-S72SX, SERIAL NUMBER 143-45631 RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

M60EGA72-PIB-001

01

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M60EGA72-PIB-001 Rev / 01 P a g e | 2 of 3 REVISION HISTORY 01 Rev

12/Nov/2014 Initial Release Date Reason for issue

CHANGE DESCRIPTION Rev 01

Description of Change Initial Release

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M60EGA72-PIB-001 Rev / 01 P a g e | 3 of 3 Assemblies Affected: EGA72 Dual Combi Blow Out Preventer - M60EGA72-N72SX, Serial Number 143-45630 EGA72 Single Combi Blow Out Preventer - M60EGA72-S72SX, Serial number 143-45631

Action: The addition of Set Screw 7942-0402 is required for EGA72 Single Combi and Dual Combi Blow Out Preventer Assemblies shipped from Texas Oil Tools up to the current date of October 17, 2014. This set screw is located in the Piston and locks in place the Piston to the Piston Rod. The installation of the Set Screw is required to ensure Piston does not back off of Piston Rod. Please contact TOT sales for shipping of set screw and reference appropriate Tech Manual for Disassembly and Assembly to install Set Screw.

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PRODUCT SERVICE BULLETIN

PSBL-COMBI SSR BLADE, 1.75 2.38

COMBI SHEAR/SEAL BLADE PROCUREMENT

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601012729-PIB-001

02

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D601012729-PIB-001 Rev / 02 P a g e | 2 of 3 REVISION HISTORY 02 01 Rev

19/Dec/2014

Revision

18/Dec/2014 Initial Release Date Reason for issue

CHANGE DESCRIPTION Rev 01 02

Description of Change Initial Release Shear Seal References

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CN

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CN Approved

D601012729-PIB-001 Rev / 02 P a g e | 3 of 3

SUBJECT: COMBI SHEAR/SEAL BLADE PROCUREMENT SCOPE: Testing was conducted to review sheared end of coiled tubing after shearing three different sizes of coil in a 1.75" combi shear/seal blade used in BOP model ES46. Current blades supplied by NOV Texas Oil Tools are coil size specific ensuring sufficient profile opening to allow possible pump down operations and reducing coil swell for overshot intervention. REVIEW: Coiled tubing sizes tested using the 1.75" blade were 1.25", 1.50" and 1.75''. Testing showed shearing all three sizes of coil with one blade had sufficient opening for pump down operations. Additionally sheared end coil swell for both 1.75" and 1.50" coil is within 5%, whereas on 1.25" coil it was observed at 10%. Amount of swell should not hinder any milling operation or other fishing alternatives which could be required. Shear values recorded are within normal values of coil used. Testing was also conducted on 2.38" shear/seal blades with 2.00" and 2.38" coil; results were comparable to the 1.75" blade results. CONCLUSION: NOV Texas Oil Tools is dedicated to continuous product improvements in regards to market pains and meeting our customers’ expectations. We have decided to manufacture our shear/seal blades associated with combi BOPs in two sizes, 1.75” (For 1.25”,1.50”&1.75” coil) and 2.38” (For 2.00” and 2.38” coil). This change will increase shear blade throughput resulting in reduced lead times, higher volume inventory and overall improved logistics for our customers and NOV Texas Oil Tools.

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PRODUCT SERVICE BULLETIN

PSBL- RAM ELASTOMER VARIANCE

COMPOUND BEING USED FOR SSR AND GSR SEALS IN SUBSEA APPLICATIONS

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601012627-PIB-001

01

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D601012627-PIB-001 Rev / 01 P a g e | 2 of 3 REVISION HISTORY 01 Rev

23/Jan/2015 Date

Initial Release Reason for issue

CHANGE DESCRIPTION Rev 01

Description of Change Initial Release

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JD Checked

CN Approved

D601012627-PIB-001 Rev / 01 P a g e | 3 of 3

Incident: During recent testing and review of incoming seals for use in specific subsea projects Texas Oil Tools discovered a non-approved compound being supplied for SSR and GSR seals. Compound being manufactured was from a TOT approved vendor using their approved compound for TOT parts; however the compound was not approved for use in subsea well applications. Discussion: Parts affected are manufactured from a non-qualified HNBR compound that is not approved for subsea applications. Compound ingredients are virtually the same as the approved HNBR 803-80; however, the non-approved compound has not undergone fluid immersion and RGD testing per customer specific qualifications. Action: Texas Oil Tools request that customers identify components used in their assemblies based on the affected parts, per the chart below, and contact Texas Oil Tools Subsea sales for new seals. When contacting TOT please have part number and part specific identification number or job information.

Part Description Front Seal Front Seal Front Seal Front Seal Shear Seal Shear Seal Shear Seal Shear Seal Rear Seal Front Seal Rear Seal Shear Seal Shear Seal Shear Seal Shear Seal Shear Seal Shear Seal

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AFFECTED PARTS: NON SPECIFIED COMPOUND Part Number Job Number 9803-0551H 447925, 430753, 424288, 415900 9803-0561H 431280, 415900 9803-0541H 415900 9803-0544H 424288, 415900 9201-0951H 425015, 427611, 429362,429485, 447943, 449126 9201-0961H 431034, 446550 9201-0851H 925015, 427611, 429076, 429488, 447943, 449126 9201-0861H 431034, 446550 7805-2431KD 434493, 430903, 412936, 438639, 412936 8505-5851KD 438638, 435322 449630, 449270, 449096, 447925, 443178, 438890, 9201-2421H 437557, 429517, 424816, 417637 M601005744KD 429443 M601005746KD 428242 M601009238KD 446771, 439092 M601009240KD 446771, 439092 M608505-5761KD 435772, 413281 M608505-5961KD 435772, 413281

PRODUCT SERVICE BULLETIN

PSBL-TOP SEAL INSERTS

2005-2020 2005-2020, TOP SEAL 7.06 5M ‘EG’ SHEAR/SEAL FAILURE

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

2005-2020-PIB-001

01

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2005-2020-PIB-001 Rev / 01 P a g e | 2 of 3 REVISION HISTORY 01 Rev

08/April/2015 Initial Release Date Reason for issue

CHANGE DESCRIPTION Rev 01

Description of Change Initial Release

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JTM Checked

JD Approved

2005-2020-PIB-001 Rev / 01 P a g e | 3 of 3 Product: 2005-2020, TOP SEAL 7.06 5M ‘EG’ SHEAR/SEAL Incident: During testing, at the Texas Oil Tools facility, a Top Seal failed to perform correctly. The inserts at the front of the seal were bent and became lodged between the two rams, causing the Ram assembly not to test.

Investigation: TOT tested additional Top Seals and witnessed the same failure. Comparisons were made between other assemblies that tested good, but nothing was apparent. Top Seals and Rams were dimensionally inspected and found to be within print tolerances. During inception of the damaged seals, it was noticed that bonded inserts could be removed from the Top Seal using minimal force with no rubber tear. Further investigation to damaged and new Seals of the affected batch revealed an isolated issue of the Inserts not being fully bonded to the rubber. TOT contacted the vendor, the issue was investigated by the vendor and they determined there was a process issue in bonding the inserts to the rubber.

Action: TOT’s vendor instituted added quality processes to their manufacturing to insure the bond of the inserts were full and consistent. TOT was supplied new Seals to test. TOT has fully tested the Top Seals, with the added processes, and found them to be fit for use. Customers that have received Top Seals with PO #455723 & #453337 are to contact TOT Sales to obtain replacements. It would be beneficial to all parties for the seals to be returned to TOT for further analysis.

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PRODUCT SERVICE BULLETIN

PSBL-5.12” S/S Blades 2.88 & 3.50

Product Service Bulletin for 5.12” Shear Seal Blades of sizes 2.875” and 3.500” 2.875 BLADE LH: 8505-5973 3.500 BLADE LH: 8505-5988

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601013126-PIB-001

02

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D601013126-PIB-001 Rev / 02 P a g e | 2 of 3 REVISION HISTORY 02 01 Rev

25/Sept/2015

Revision

12/June/2015 Initial Release Date Reason for issue

CHANGE DESCRIPTION Rev 01 02

Description of Change Initial Release Remove 9622-0788 per customer request; Add LH callout

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CP

JD

MD

CP Prepared

MD Checked

JD Approved

D601013126-PIB-001 Rev / 02 P a g e | 3 of 3 Scope Texas Oil Tools has identified a design issue regarding 5.12” Shear Seal Blades for sizes 2 7/8” and 3.5” causing failure to seal, and recommends all customers with effected part numbers to contact TOT for replacement. 8505-5988, 3.500 BLADE LH: Rev. E and prior 8505-5973, 2.875 BLADE LH: Rev. J and prior Summary Texas Oil Tools was notified of sealing failures during equipment testing of new Shear Seal blades. Investigation determined that this issue was a design flaw present since creation in 1995, and until recently, no issues were reported. During closing of the rams, the top shear seal blades contacted approximately ½” before the side packing elastomer could energize. This design oversight caused the ineffectiveness of the seal.

The 3.5” blade 8505-5988 was caught in-house during factory acceptance testing, and was reworked to reduce the length and remedy the issue. It was not noticed with the 2 7/8” 85055973 blades and the 3.5” 9622-0788 blades until customers reported the issue. These parts were sold as spares or line size changes and not part of an entire BOP unit. Reworked 2 7/8” blades have been successfully tested in-house. Contact Texas Oil Tools Sales department for immediate replacement.

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PRODUCT SERVICE BULLETIN

PSBL-5.12 ES ACT9 WELL RATIO

M60ES56-ACT9 M60ES56-ACT9B M60ES56-ACT9ZL M60ES56-ACT17YL Bulletin Reporting Incorrect Wellbore Ratio Values Provided in Tech Manuals.

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D601013236-PIB-001

01

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D601013236-PIB-001 Rev / 01 P a g e | 2 of 4 REVISION HISTORY 01 Rev

30/July/2015 Initial Release Date Reason for issue

CHANGE DESCRIPTION Rev 01

Description of Change Initial Release

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MD Checked

JD Approved

D601013236-PIB-001 Rev / 01 P a g e | 3 of 4 To: Customers using 5.12” 10/15K ES BOPs using the following actuator assemblies. Serial numbers of affected units tabulated below. M60ES56-ACT9 M60ES56-ACT9B M60ES56-ACT9ZL M60ES56-ACT17YL

Order # 426671 426676 432400 426671 428886 428887 430154 430157 432400 427201 427201

2012 Serial Number 122-36213 121-35807 123-37752 122-36208 121-35658 122-36561 122-37086 122-37178 123-37752 121-35826 121-35821

Order # 442594 442803 433698 442655 438574 438574 438862 440409 429740 439191 437851 437851 441338 441339 441340 441341 441342 441343 441344

2013 Serial Number 133-42893 133-43142 131-40473 133-43171 132-41575 132-41570 132-41524 132-41528 131-39705 133-43039 132-41801 132-41804 131-40618 131-40674 132-41110 132-41124 132-41422 132-41706 132-41721

2014/2015 Order Serial # Number 449708 142-44881 449713 142-44938 449733 142-45034 449737 142-45189 449744 142-45210 449747 142-45255 446977 141-43882 446977 141-43884 441366 141-43929 441367 142-44718 441368 142-44742 456360 152-47766

Summary An error was identified in the tech manuals for the above mentioned BOP units regarding hydraulic wellbore ratios. The manuals listed an incorrect ratio of 208:1. The correct ratio is 23.18:1. All affected tech manuals have been revised to correct the error. The graph on the following page illustrates shearing capabilities of the three main 5.12” ES shear seal actuators on 2.00” .203 wall 148,000 psi yield strength coiled tubing as an example. Attached to this bulletin is a shearing capabilities document displaying theoretically calculated hydraulic pressured required to shear various coiled tubing at different wellbore pressures.

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D601013236-PIB-001 Rev / 01 P a g e | 4 of 4

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GENERAL DOCUMENT

ACT9 S/S BSTR SHEAR VALUES

M60ES56-ACT9 Coiled Tubing Shearing Capabilities of M60ES56ACT9 Shear Seal Actuator With Boosters

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollock Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

M60ES56-ACT9-GEN-001

01

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M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 2 of 36 REVISION HISTORY 01 7/29/2015 Rev Date

Initial Release Reason for issue

CHANGE DESCRIPTION Rev 01

Description of Change Initial Release

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MD Prepared

KM Checked

JD Approved

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 3 of 36 Scope: This document is a tabulated compilation of shearing capabilities derived from the Texas Oil Tools shear calculator. This document is an easy reference guide to the shearing capabilities for this equipment. It incorporates Coiled Tubing sizes and grades from both NOV – Quality Tubing, Tenaris Coiled Tubing and Global Tubing to provide a broad spectrum of references.

Important Notes: 

This document serves as a reference guide to determine the shearing capabilities of this equipment. To have an accurate calculation for the BOP, contact Texas Oil Tools so a precise calculation can be formulated and documented for the unique well site variables.



The calculated values are Theoretical and my not account for all the variables a particular shearing scenario may encounter. The calculator incorporates blade factors that have been experimentally derived over years of extensive research and testing to allow more accuracte theoretical calculations.



The calculator assumes material test report (MTR) results of the Coiled Tubing 20% higher than the specified minimum yield strength.



The calculator assumes Coiled Tubing as the cutting medium only.



Values that are represented as xxx indicate the BOP will not shear.



Values indicated as bold and italicized indicate a warning based on 90% hydraulic pressure safety factor.



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M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 4 of 36

Table of Contents REVISION HISTORY ..................................................................................................................................... 1 SCOPE .......................................................................................................................................................... 3 TABLE OF CONTENTS ................................................................................................................................ 4 QUALITY TUBING ........................................................................................................................................ 5 QT-700 ....................................................................................................................................................... 6 QT-800 ....................................................................................................................................................... 7 QT-900 ....................................................................................................................................................... 9 QT-1000 ................................................................................................................................................... 11 QT-1300 ................................................................................................................................................... 13 QT-16CR .................................................................................................................................................. 14 TENARIS TUBING ...................................................................................................................................... 15 HS-70 ....................................................................................................................................................... 16 HS-80 ....................................................................................................................................................... 18 HS-90 ....................................................................................................................................................... 20 HS-110 ..................................................................................................................................................... 22 HS-80 CRA ............................................................................................................................................... 24 GLOBAL TUBING ....................................................................................................................................... 26 GT-70 ....................................................................................................................................................... 27 GT-80 ....................................................................................................................................................... 29 GT-90 ....................................................................................................................................................... 31 GT-100 ..................................................................................................................................................... 33 GT-110 ..................................................................................................................................................... 35

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M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 5 of 36

Quality Tubing

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M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 6 of 36

Shear Values - Quality Tubing QT-700 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

70000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 166 274 382 490 598 705 0.087 0.750 179 287 395 503 611 719 0.095 229 337 445 552 660 768 0.087 248 356 463 571 679 787 0.095 264 372 480 587 695 803 0.102 1.000 280 388 496 603 711 819 0.109 300 408 516 623 731 839 0.118 315 423 531 639 747 854 0.125 292 399 507 615 723 831 0.087 316 424 532 640 748 855 0.095 337 445 553 661 769 877 0.102 358 466 574 682 790 898 0.109 1.250 385 493 601 708 816 924 0.118 405 513 621 729 837 944 0.125 431 539 647 754 862 970 0.134 462 570 677 785 893 1001 0.145 492 600 708 815 923 1031 0.156 385 492 600 708 816 924 0.095 411 519 627 734 842 950 0.102 437 545 653 760 868 976 0.109 470 578 686 793 901 1009 0.118 1.500 495 603 711 819 927 1034 0.125 528 635 743 851 959 1067 0.134 566 674 782 890 998 1105 0.145 604 712 820 928 1036 1143 0.156 515 623 731 839 947 1055 0.109 555 663 771 878 986 1094 0.118 585 693 801 909 1017 1125 0.125 1.750 624 732 840 948 1055 1163 0.134 671 779 886 994 1102 1210 0.145 717 824 932 1040 1148 1256 0.156 675 783 891 999 1107 1215 0.125 721 828 936 1044 1152 1260 0.134 775 883 991 1099 1206 1314 0.145 2.000 829 937 1045 1153 1260 1368 0.156 920 1028 1136 1244 1352 1460 0.175 982 1090 1197 1305 1413 1521 0.188 865 973 1081 1189 1297 1405 0.134 932 1040 1148 1255 1363 1471 0.145 2.375 998 1105 1213 1321 1429 1537 0.156 1110 1217 1325 1433 1541 1649 0.175 1185 1293 1401 1508 1616 1724 0.188 1110 1218 1326 1433 1541 1649 0.156 2.625 1320 1428 1536 1644 1752 1860 0.188 1417 1525 1633 1740 1848 1956 0.203 1141 1249 1356 1464 1572 1680 0.145 1222 1330 1438 1546 1654 1762 0.156 2.875 1362 1470 1577 1685 1793 1901 0.175 1456 1564 1671 1779 1887 1995 0.188 1563 1671 1779 1887 1995 2102 0.203 1391 1499 1607 1714 1822 1930 0.156 3.250 1659 1767 1875 1982 2090 2198 0.188 1783 1890 1998 2106 2214 2322 0.203 1503 1611 1719 1827 1935 2043 0.156 3.500 1794 1902 2010 2118 2226 2334 0.188 1929 2037 2144 2252 2360 2468 0.203 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 813 826 876 895 911 927 947 962 939 963 984 1005 1032 1052 1078 1109 1139 1032 1058 1084 1117 1142 1175 1213 1251 1162 1202 1232 1271 1318 1364 1322 1368 1422 1476 1567 1629 1512 1579 1645 1757 1832 1757 1967 2064 1788 1869 2009 2103 2210 2038 2306 2430 2150 2441 2576

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 7 of 36

Shear Values - Quality Tubing QT-800 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

80000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 190 298 406 513 621 729 0.087 0.750 205 313 421 528 636 744 0.095 262 369 477 585 693 801 0.087 283 391 499 607 715 822 0.095 302 410 517 625 733 841 0.102 1.000 320 428 536 643 751 859 0.109 343 451 558 666 774 882 0.118 360 468 576 684 792 899 0.125 333 441 549 657 765 872 0.087 361 469 577 685 793 901 0.095 386 493 601 709 817 925 0.102 410 517 625 733 841 949 0.109 440 548 656 763 871 979 0.118 1.250 463 571 679 787 894 1002 0.125 493 600 708 816 924 1032 0.134 528 636 743 851 959 1067 0.145 562 670 778 886 993 1101 0.156 620 727 835 943 1051 1159 0.175 440 547 655 763 871 979 0.095 470 577 685 793 901 1009 0.102 499 607 715 823 931 1039 0.109 537 645 753 861 968 1076 0.118 566 674 782 890 997 1105 0.125 1.500 603 711 819 926 1034 1142 0.134 647 755 863 971 1078 1186 0.145 691 798 906 1014 1122 1230 0.156 764 872 979 1087 1195 1303 0.175 812 920 1028 1136 1244 1352 0.188 867 975 1083 1191 1299 1406 0.203 589 697 805 913 1020 1128 0.109 634 742 850 958 1066 1173 0.118 669 777 885 993 1100 1208 0.125 713 821 929 1037 1145 1252 0.134 1.750 766 874 982 1090 1198 1306 0.145 819 927 1035 1142 1250 1358 0.156 908 1016 1123 1231 1339 1447 0.175 967 1075 1183 1291 1399 1506 0.188 1034 1142 1250 1358 1466 1573 0.203 772 880 988 1095 1203 1311 0.125 824 931 1039 1147 1255 1363 0.134 886 994 1102 1209 1317 1425 0.145 2.000 947 1055 1163 1271 1379 1487 0.156 1052 1160 1268 1375 1483 1591 0.175 1122 1230 1338 1445 1553 1661 0.188 1201 1309 1417 1525 1633 1741 0.203 989 1097 1205 1313 1420 1528 0.134 1065 1173 1281 1388 1496 1604 0.145 1140 1248 1356 1464 1571 1679 0.156 2.375 1268 1376 1484 1592 1699 1807 0.175 1354 1462 1570 1678 1786 1893 0.188 1452 1560 1668 1776 1884 1991 0.203 1269 1376 1484 1592 1700 1808 0.156 1412 1520 1628 1736 1843 1951 0.175 2.625 1509 1617 1725 1832 1940 2048 0.188 1619 1727 1835 1943 2051 2159 0.203 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 837 852 909 930 949 967 990 1007 980 1008 1033 1057 1087 1110 1140 1175 1209 1267 1087 1117 1146 1184 1213 1250 1294 1338 1411 1459 1514 1236 1281 1316 1360 1414 1466 1555 1614 1681 1419 1471 1533 1594 1699 1769 1848 1636 1712 1787 1915 2001 2099 1916 2059 2156 2266

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 8 of 36

Shear Values - Quality Tubing QT-800 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

80000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 1304 1412 1519 1627 1735 1843 0.145 1397 1505 1613 1721 1828 1936 0.156 2.875 1556 1664 1772 1880 1988 2095 0.175 1664 1772 1879 1987 2095 2203 0.188 1786 1894 2002 2110 2218 2326 0.203 1590 1698 1805 1913 2021 2129 0.156 1772 1880 1988 2096 2204 2312 0.175 3.250 1896 2004 2112 2219 2327 2435 0.188 2037 2145 2253 2361 2469 2576 0.203 1718 1826 1934 2042 2149 2257 0.156 1916 2024 2132 2240 2348 2456 0.175 3.500 2051 2159 2266 2374 2482 2590 0.188 2204 2312 2420 2528 2636 2744 0.203 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 1951 2044 2203 2311 2433 2237 2419 2543 2684 2365 2563 2698 2851

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 9 of 36

Shear Values - Quality Tubing QT-900 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

90000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 214 322 429 537 645 753 0.087 0.750 231 338 446 554 662 770 0.095 294 402 510 618 726 833 0.087 319 426 534 642 750 858 0.095 339 447 555 663 771 879 0.102 1.000 360 468 576 683 791 899 0.109 386 493 601 709 817 925 0.118 405 513 621 729 837 944 0.125 375 483 591 698 806 914 0.087 407 514 622 730 838 946 0.095 434 542 650 757 865 973 0.102 461 569 676 784 892 1000 0.109 495 603 711 818 926 1034 0.118 1.250 521 629 737 845 952 1060 0.125 554 662 770 878 985 1093 0.134 594 702 809 917 1025 1133 0.145 632 740 848 956 1064 1172 0.156 697 805 913 1021 1128 1236 0.175 495 602 710 818 926 1034 0.095 528 636 744 852 960 1068 0.102 562 670 777 885 993 1101 0.109 604 712 820 928 1036 1143 0.118 637 745 853 960 1068 1176 0.125 1.500 678 786 894 1002 1110 1217 0.134 728 836 944 1051 1159 1267 0.145 777 885 993 1100 1208 1316 0.156 859 967 1075 1183 1290 1398 0.175 914 1022 1130 1237 1345 1453 0.188 976 1083 1191 1299 1407 1515 0.203 663 771 878 986 1094 1202 0.109 714 821 929 1037 1145 1253 0.118 753 860 968 1076 1184 1292 0.125 802 910 1018 1126 1234 1342 0.134 1.750 862 970 1078 1186 1294 1401 0.145 921 1029 1137 1245 1353 1461 0.156 1021 1129 1237 1345 1453 1560 0.175 1088 1196 1304 1412 1519 1627 0.188 1164 1271 1379 1487 1595 1703 0.203 868 976 1084 1192 1300 1408 0.125 926 1034 1142 1250 1358 1466 0.134 997 1104 1212 1320 1428 1536 0.145 2.000 1066 1174 1282 1389 1497 1605 0.156 1183 1291 1399 1507 1615 1723 0.175 1262 1370 1478 1586 1694 1801 0.188 1352 1459 1567 1675 1783 1891 0.203 1113 1220 1328 1436 1544 1652 0.134 1198 1306 1414 1522 1629 1737 0.145 1283 1390 1498 1606 1714 1822 0.156 2.375 1427 1534 1642 1750 1858 1966 0.175 1523 1631 1739 1847 1955 2063 0.188 1634 1742 1849 1957 2065 2173 0.203 1427 1535 1643 1751 1858 1966 0.156 1589 1696 1804 1912 2020 2128 0.175 2.625 1698 1805 1913 2021 2129 2237 0.188 1822 1930 2037 2145 2253 2361 0.203 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 861 878 941 966 986 1007 1033 1052 1022 1054 1081 1108 1142 1168 1201 1241 1279 1344 1142 1175 1209 1251 1284 1325 1375 1424 1506 1561 1623 1310 1361 1400 1449 1509 1568 1668 1735 1811 1515 1573 1644 1713 1830 1909 1999 1760 1845 1930 2074 2170 2281 2074 2236 2345 2469

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 10 of 36

Shear Values - Quality Tubing QT-900 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

90000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 1467 1575 1682 1790 1898 2006 0.145 1572 1679 1787 1895 2003 2111 0.156 2.875 1751 1859 1966 2074 2182 2290 0.175 1872 1980 2087 2195 2303 2411 0.188 2010 2118 2225 2333 2441 2549 0.203 1788 1896 2004 2112 2220 2328 0.156 1994 2102 2210 2317 2425 2533 0.175 3.250 2133 2241 2349 2456 2564 2672 0.188 2292 2400 2508 2615 2723 2831 0.203 1933 2041 2149 2256 2364 2472 0.156 2156 2264 2372 2479 2587 2695 0.175 3.500 2307 2415 2523 2631 2738 2846 0.188 2480 2588 2696 2803 2911 x 0.203 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 2114 2219 2398 2519 2657 2435 2641 2780 2939 2580 2803 2954 x

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 11 of 36

Shear Values - Quality Tubing QT-1000 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

100000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 377 485 593 701 808 916 0.102 400 508 616 723 831 939 0.109 1.000 428 536 644 752 860 968 0.118 450 558 666 774 882 989 0.125 417 524 632 740 848 956 0.087 452 560 667 775 883 991 0.095 482 590 698 806 913 1021 0.102 512 620 728 836 943 1051 0.109 550 658 766 873 981 1089 0.118 1.250 579 687 795 902 1010 1118 0.125 616 723 831 939 1047 1155 0.134 660 767 875 983 1091 1199 0.145 703 810 918 1026 1134 1242 0.156 774 882 990 1098 1206 1314 0.175 550 657 765 873 981 1089 0.095 587 695 803 911 1018 1126 0.102 624 732 840 948 1056 1163 0.109 671 779 887 995 1103 1211 0.118 708 815 923 1031 1139 1247 0.125 1.500 754 861 969 1077 1185 1293 0.134 809 917 1025 1132 1240 1348 0.145 863 971 1079 1187 1295 1402 0.156 955 1062 1170 1278 1386 1494 0.175 1015 1123 1231 1339 1447 1555 0.188 1084 1192 1300 1407 1515 1623 0.203 736 844 952 1060 1168 1276 0.109 793 901 1008 1116 1224 1332 0.118 836 944 1052 1160 1268 1375 0.125 891 999 1107 1215 1323 1431 0.134 1.750 958 1066 1174 1282 1389 1497 0.145 1024 1132 1239 1347 1455 1563 0.156 1135 1243 1350 1458 1566 1674 0.175 1209 1317 1425 1532 1640 1748 0.188 1293 1401 1509 1616 1724 1832 0.203 965 1073 1181 1288 1396 1504 0.125 1029 1137 1245 1353 1461 1569 0.134 1107 1215 1323 1431 1539 1647 0.145 2.000 1184 1292 1400 1508 1616 1723 0.156 1315 1423 1531 1638 1746 1854 0.175 1402 1510 1618 1726 1834 1942 0.188 1502 1610 1717 1825 1933 2041 0.203 1236 1344 1452 1560 1668 1775 0.134 1331 1439 1547 1655 1763 1870 0.145 1425 1533 1641 1749 1856 1964 0.156 2.375 1585 1693 1801 1909 2016 2124 0.175 1693 1801 1908 2016 2124 2232 0.188 1815 1923 2031 2139 2247 2354 0.203 1586 1694 1801 1909 2017 2125 0.156 1765 1873 1981 2089 2196 2304 0.175 2.625 1886 1994 2102 2210 2318 2425 0.188 2024 2132 2240 2348 2455 2563 0.203 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 1024 1047 1075 1097 1064 1099 1129 1159 1197 1226 1263 1307 1350 1422 1197 1234 1271 1318 1355 1401 1456 1510 1602 1662 1731 1383 1440 1483 1539 1605 1671 1782 1856 1940 1612 1676 1754 1831 1962 2049 2149 1883 1978 2072 2232 2340 2462 2233 2412 2533 2671

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 12 of 36

Shear Values - Quality Tubing QT-1000 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

100000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 1630 1738 1845 1953 2061 2169 0.145 1746 1854 1962 2070 2178 2285 0.156 2.875 1945 2053 2161 2269 2377 2484 0.175 2080 2188 2295 2403 2511 2619 0.188 2772 2233 2341 2449 2557 2664 0.203 1987 2095 2203 2311 2418 2526 0.156 2755 2215 2323 2431 2539 2647 0.175 3.250 2801 2909 2370 2478 2586 2693 0.188 2762 2870 2978 x 2546 2654 0.203 2148 2255 2363 2471 2579 2687 0.156 2719 2827 2935 2396 2503 2611 0.175 3.500 2779 2887 2995 x 2563 2671 0.188 2755 2863 2971 x x x 0.203 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 2277 2393 2592 2727 2880 2634 2862 x x 2795 x x x

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 13 of 36

Shear Values - Quality Tubing QT-1300 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

130000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 980 1087 1195 1303 1411 1519 0.134 1052 1159 1267 1375 1483 1591 0.145 1122 1230 1338 1446 1553 1661 0.156 1.500 1241 1349 1457 1565 1672 1780 0.175 1320 1428 1536 1644 1751 1859 0.188 1409 1517 1625 1733 1840 1948 0.203 1159 1267 1375 1482 1590 1698 0.134 1246 1353 1461 1569 1677 1785 0.145 1331 1439 1547 1654 1762 1870 0.156 1.750 1475 1583 1691 1799 1906 2014 0.175 1572 1679 1787 1895 2003 2111 0.188 1681 1789 1896 2004 2112 2220 0.203 1338 1446 1554 1662 1770 1877 0.134 1440 1547 1655 1763 1871 1979 0.145 1540 1647 1755 1863 1971 2079 0.156 2.000 1709 1817 1925 2033 2141 2248 0.175 1823 1931 2039 2147 2255 2362 0.188 1952 2060 2168 2276 2384 2492 0.203 1607 1715 1823 1931 2039 2146 0.134 1731 1838 1946 2054 2162 2270 0.145 1853 1961 2068 2176 2284 2392 0.156 2.375 2061 2168 2276 2384 2492 2600 0.175 2201 2308 2416 2524 2632 2740 0.188 2360 2468 2575 2683 2791 2899 0.203 2061 2169 2277 2385 2493 2601 0.156 2295 2403 2510 2618 2726 2834 0.175 2.625 2452 2560 2668 2776 2883 2991 0.188 2631 x x 2739 2847 2955 0.203 2119 2226 2334 2442 2550 2658 0.145 2270 2378 2486 2594 2701 2809 0.156 2.875 2529 2637 x 2744 2852 2960 0.175 x x x 2704 2811 2919 0.188 x x x x x 2903 0.203 2583 2691 x x 2799 2907 0.156 x x x x 2880 2988 0.175 3.250 x x x x x x 0.188 x x x x x x 0.203 x x x x 2792 2900 0.156 x x x x x x 0.175 3.500 x x x x x x 0.188 x x x x x x 0.203 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 1627 1699 1769 1888 1967 2056 1806 1893 1978 2122 2219 2328 1985 2087 2187 2356 2470 2599 2254 2378 2500 2708 2848 x 2708 2942 x x 2766 2917 x x x x x x x x x x x

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 14 of 36

Shear Values - Quality Tubing QT-16CR Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

90000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 319 426 534 642 750 858 0.095 1.000 360 468 576 683 791 899 0.109 407 514 622 730 838 946 0.095 461 569 676 784 892 1000 0.109 1.250 554 662 770 878 985 1093 0.134 632 740 848 956 1064 1172 0.156 495 602 710 818 926 1034 0.095 562 670 777 885 993 1101 0.109 1.500 678 786 894 1002 1110 1217 0.134 777 885 993 1100 1208 1316 0.156 859 967 1075 1183 1290 1398 0.175 663 771 878 986 1094 1202 0.109 802 910 1018 1126 1234 1342 0.134 1.750 921 1029 1137 1245 1353 1461 0.156 1021 1129 1237 1345 1453 1560 0.175 1088 1196 1304 1412 1519 1627 0.188 926 1034 1142 1250 1358 1466 0.134 1066 1174 1282 1389 1497 1605 0.156 2.000 1183 1291 1399 1507 1615 1723 0.175 1262 1370 1478 1586 1694 1801 0.188 1113 1220 1328 1436 1544 1652 0.134 1283 1390 1498 1606 1714 1822 0.156 2.375 1427 1534 1642 1750 1858 1966 0.175 1523 1631 1739 1847 1955 2063 0.188 1572 1679 1787 1895 2003 2111 0.156 2.875 1751 1859 1966 2074 2182 2290 0.175 1872 1980 2087 2195 2303 2411 0.188 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 966 1007 1054 1108 1201 1279 1142 1209 1325 1424 1506 1310 1449 1568 1668 1735 1573 1713 1830 1909 1760 1930 2074 2170 2219 2398 2519

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 15 of 36

Tenaris Tubing

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M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 16 of 36

Shear Values - Tenaris HS-70 (CT70) Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

70000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 154 262 370 478 586 694 0.080 166 274 382 490 598 705 0.087 0.750 179 287 395 503 611 719 0.095 190 298 406 514 622 730 0.102 201 309 417 525 633 741 0.109 212 320 428 536 643 751 0.080 229 337 445 552 660 768 0.087 248 356 463 571 679 787 0.095 264 372 480 587 695 803 0.102 1.000 280 388 496 603 711 819 0.109 296 403 511 619 727 835 0.116 315 423 531 639 747 854 0.125 334 442 550 658 766 874 0.134 270 378 485 593 701 809 0.080 292 399 507 615 723 831 0.087 316 424 532 640 748 855 0.095 337 445 553 661 769 877 0.102 358 466 574 682 790 898 0.109 1.250 379 487 595 703 810 918 0.116 405 513 621 729 837 944 0.125 431 539 647 754 862 970 0.134 462 570 677 785 893 1001 0.145 492 600 708 815 923 1031 0.156 542 650 758 866 973 1081 0.175 327 435 543 651 759 867 0.080 354 462 570 678 786 893 0.087 385 492 600 708 816 924 0.095 411 519 627 734 842 950 0.102 437 545 653 760 868 976 0.109 463 571 678 786 894 1002 0.116 1.500 495 603 711 819 927 1034 0.125 528 635 743 851 959 1067 0.134 566 674 782 890 998 1105 0.145 604 712 820 928 1036 1143 0.156 668 776 884 992 1100 1207 0.175 717 825 933 1041 1149 1256 0.190 762 870 978 1085 1193 1301 0.204 417 525 633 740 848 956 0.087 453 561 669 777 884 992 0.095 484 592 700 808 916 1024 0.102 515 623 731 839 947 1055 0.109 546 654 762 870 978 1085 0.116 585 693 801 909 1017 1125 0.125 624 732 840 948 1055 1163 0.134 1.750 671 779 886 994 1102 1210 0.145 717 824 932 1040 1148 1256 0.156 794 902 1010 1118 1226 1333 0.175 854 962 1070 1178 1286 1393 0.190 909 1017 1125 1232 1340 1448 0.204 985 1093 1201 1309 1416 1524 0.224 1081 1189 1296 1404 1512 1620 0.250 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 801 813 826 837 848 859 876 895 911 927 943 962 981 917 939 963 984 1005 1026 1052 1078 1109 1139 1189 974 1001 1032 1058 1084 1110 1142 1175 1213 1251 1315 1364 1409 1064 1100 1131 1162 1193 1232 1271 1318 1364 1441 1501 1556 1632 1728

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 17 of 36

Shear Values - Tenaris HS-70 (CT70) Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

70000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 558 666 774 881 989 1097 0.102 594 702 810 918 1025 1133 0.109 630 738 845 953 1061 1169 0.116 675 783 891 999 1107 1215 0.125 721 828 936 1044 1152 1260 0.134 775 883 991 1099 1206 1314 0.145 2.000 829 937 1045 1153 1260 1368 0.156 920 1028 1136 1244 1352 1460 0.175 991 1099 1207 1315 1422 1530 0.190 1056 1164 1272 1379 1487 1595 0.204 1146 1254 1362 1470 1578 1686 0.224 1261 1369 1476 1584 1692 1800 0.250 1388 1496 1604 1711 1819 1927 0.280 811 918 1026 1134 1242 1350 0.125 865 973 1081 1189 1297 1405 0.134 932 1040 1148 1255 1363 1471 0.145 998 1105 1213 1321 1429 1537 0.156 1110 1217 1325 1433 1541 1649 0.175 2.375 1196 1304 1412 1520 1628 1736 0.190 1276 1384 1492 1600 1708 1816 0.204 1389 1496 1604 1712 1820 1928 0.224 1531 1639 1747 1854 1962 2070 0.250 1690 1798 1906 2014 2122 2230 0.280 1794 1902 2010 2117 2225 2333 0.300 962 1070 1178 1285 1393 1501 0.134 1036 1144 1252 1360 1468 1575 0.145 1110 1218 1326 1433 1541 1649 0.156 1236 1343 1451 1559 1667 1775 0.175 1333 1441 1549 1657 1765 1872 0.190 2.625 1423 1531 1639 1747 1855 1962 0.204 1550 1658 1766 1873 1981 2089 0.224 1711 1819 1927 2035 2142 2250 0.250 1892 2000 2108 2216 2324 2431 0.280 2010 2118 2226 2334 2441 2549 0.300 1141 1249 1356 1464 1572 1680 0.145 1222 1330 1438 1546 1654 1762 0.156 1362 1470 1577 1685 1793 1901 0.175 1470 1578 1686 1794 1902 2009 0.190 2.875 1570 1678 1786 1894 2002 2109 0.204 1711 1819 1927 2035 2143 2250 0.224 1891 1999 2107 2215 2323 2430 0.250 2094 2202 2310 2417 2525 2633 0.280 2226 2334 2442 2550 2658 2765 0.300 1677 1785 1893 2000 2108 2216 0.175 1812 1920 2028 2136 2244 2352 0.190 1938 2046 2153 2261 2369 2477 0.204 3.500 2115 2223 2330 2438 2546 2654 0.224 2342 2449 2557 2665 2773 2881 0.250 x x 2598 2706 2814 2922 0.280 x x x 2767 2874 2982 0.300 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 1205 1241 1277 1322 1368 1422 1476 1567 1638 1703 1793 1908 2035 1458 1512 1579 1645 1757 1843 1923 2036 2178 2338 2441 1609 1683 1757 1883 1980 2070 2197 2358 2539 2657 1788 1869 2009 2117 2217 2358 2538 2741 2873 2324 2459 2585 2762 2989 x x

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 18 of 36

Shear Values - Tenaris HS-80 (CT80) Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

80000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 177 284 392 500 608 716 0.080 190 298 406 513 621 729 0.087 0.750 205 313 421 528 636 744 0.095 218 326 433 541 649 757 0.102 230 338 446 554 661 769 0.109 242 350 458 566 674 782 0.080 262 369 477 585 693 801 0.087 283 391 499 607 715 822 0.095 302 410 517 625 733 841 0.102 1.000 320 428 536 643 751 859 0.109 338 446 553 661 769 877 0.116 360 468 576 684 792 899 0.125 382 490 598 706 814 921 0.134 308 416 524 632 740 847 0.080 333 441 549 657 765 872 0.087 361 469 577 685 793 901 0.095 386 493 601 709 817 925 0.102 410 517 625 733 841 949 0.109 1.250 433 541 649 757 865 972 0.116 463 571 679 787 894 1002 0.125 493 600 708 816 924 1032 0.134 528 636 743 851 959 1067 0.145 562 670 778 886 993 1101 0.156 620 727 835 943 1051 1159 0.175 374 482 590 698 805 913 0.080 405 513 621 728 836 944 0.087 440 547 655 763 871 979 0.095 470 577 685 793 901 1009 0.102 499 607 715 823 931 1039 0.109 529 637 744 852 960 1068 0.116 1.500 566 674 782 890 997 1105 0.125 603 711 819 926 1034 1142 0.134 647 755 863 971 1078 1186 0.145 691 798 906 1014 1122 1230 0.156 764 872 979 1087 1195 1303 0.175 820 928 1035 1143 1251 1359 0.190 871 979 1086 1194 1302 1410 0.204 477 584 692 800 908 1016 0.087 518 626 733 841 949 1057 0.095 554 661 769 877 985 1093 0.102 589 697 805 913 1020 1128 0.109 624 732 840 948 1056 1163 0.116 669 777 885 993 1100 1208 0.125 713 821 929 1037 1145 1252 0.134 1.750 766 874 982 1090 1198 1306 0.145 819 927 1035 1142 1250 1358 0.156 908 1016 1123 1231 1339 1447 0.175 976 1084 1192 1300 1408 1515 0.190 1039 1147 1254 1362 1470 1578 0.204 1126 1234 1341 1449 1557 1665 0.224 1235 1343 1451 1559 1666 1774 0.250 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 824 837 852 865 877 889 909 930 949 967 985 1007 1029 955 980 1008 1033 1057 1080 1110 1140 1175 1209 1267 1021 1052 1087 1117 1146 1176 1213 1250 1294 1338 1411 1467 1518 1124 1165 1201 1236 1271 1316 1360 1414 1466 1555 1623 1686 1773 1882

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 19 of 36

Shear Values - Tenaris HS-80 (CT80) Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

80000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 638 745 853 961 1069 1177 0.102 679 787 895 1002 1110 1218 0.109 720 828 935 1043 1151 1259 0.116 772 880 988 1095 1203 1311 0.125 824 931 1039 1147 1255 1363 0.134 886 994 1102 1209 1317 1425 0.145 2.000 947 1055 1163 1271 1379 1487 0.156 1052 1160 1268 1375 1483 1591 0.175 1133 1240 1348 1456 1564 1672 0.190 1207 1315 1422 1530 1638 1746 0.204 1310 1418 1526 1634 1742 1849 0.224 1441 1549 1657 1764 1872 1980 0.250 1586 1694 1802 1910 2018 2125 0.280 926 1034 1142 1250 1358 1465 0.125 989 1097 1205 1313 1420 1528 0.134 1065 1173 1281 1388 1496 1604 0.145 1140 1248 1356 1464 1571 1679 0.156 1268 1376 1484 1592 1699 1807 0.175 2.375 1367 1475 1583 1691 1799 1906 0.190 1459 1566 1674 1782 1890 1998 0.204 1587 1695 1803 1910 2018 2126 0.224 1750 1858 1965 2073 2181 2289 0.250 1932 2040 2148 2256 2363 2471 0.280 2050 2158 2266 2374 2482 2589 0.300 1099 1207 1315 1423 1531 1639 0.134 1184 1292 1400 1508 1616 1724 0.145 1269 1376 1484 1592 1700 1808 0.156 1412 1520 1628 1736 1843 1951 0.175 1524 1632 1739 1847 1955 2063 0.190 2.625 1627 1734 1842 1950 2058 2166 0.204 1771 1879 1987 2095 2203 2311 0.224 1956 2063 2171 2279 2387 2495 0.250 2163 2270 2378 2486 2594 2702 0.280 2297 2405 2513 2621 2729 2836 0.300 1304 1412 1519 1627 1735 1843 0.145 1397 1505 1613 1721 1828 1936 0.156 1556 1664 1772 1880 1988 2095 0.175 1680 1788 1896 2004 2112 2219 0.190 2.875 1795 1902 2010 2118 2226 2334 0.204 1956 2064 2171 2279 2387 2495 0.224 2161 2269 2377 2485 2593 2701 0.250 2393 2501 2609 2717 2824 2932 0.280 x 2544 2652 2760 2868 2976 0.300 1916 2024 2132 2240 2348 2456 0.175 2071 2179 2287 2395 2503 2610 0.190 2215 2322 2430 2538 2646 2754 0.204 3.500 2417 2525 2633 2740 2848 2956 0.224 x x 2676 2784 2892 3000 0.250 x x x x x 2969 0.280 x x x x x x 0.300 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 1285 1326 1367 1419 1471 1533 1594 1699 1780 1854 1957 2088 2233 1573 1636 1712 1787 1915 2014 2106 2234 2397 2579 2697 1746 1831 1916 2059 2171 2274 2418 2603 2810 2944 1951 2044 2203 2327 2442 2603 2808 x x 2563 2718 2862 x x x x

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 20 of 36

Shear Values - Tenaris HS-90 (CT90) Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

90000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 294 402 510 618 726 833 0.087 319 426 534 642 750 858 0.095 339 447 555 663 771 879 0.102 1.000 360 468 576 683 791 899 0.109 380 488 596 703 811 919 0.116 405 513 621 729 837 944 0.125 430 538 646 753 861 969 0.134 375 483 591 698 806 914 0.087 407 514 622 730 838 946 0.095 434 542 650 757 865 973 0.102 461 569 676 784 892 1000 0.109 487 595 703 811 919 1027 0.116 1.250 521 629 737 845 952 1060 0.125 554 662 770 878 985 1093 0.134 594 702 809 917 1025 1133 0.145 632 740 848 956 1064 1172 0.156 697 805 913 1021 1128 1236 0.175 455 563 671 779 887 995 0.087 495 602 710 818 926 1034 0.095 528 636 744 852 960 1068 0.102 562 670 777 885 993 1101 0.109 595 703 811 918 1026 1134 0.116 637 745 853 960 1068 1176 0.125 1.500 678 786 894 1002 1110 1217 0.134 728 836 944 1051 1159 1267 0.145 777 885 993 1100 1208 1316 0.156 859 967 1075 1183 1290 1398 0.175 922 1030 1138 1246 1354 1461 0.190 980 1087 1195 1303 1411 1519 0.204 536 644 752 860 967 1075 0.087 583 690 798 906 1014 1122 0.095 623 731 839 946 1054 1162 0.102 663 771 878 986 1094 1202 0.109 702 810 918 1026 1134 1241 0.116 753 860 968 1076 1184 1292 0.125 802 910 1018 1126 1234 1342 0.134 1.750 862 970 1078 1186 1294 1401 0.145 921 1029 1137 1245 1353 1461 0.156 1021 1129 1237 1345 1453 1560 0.175 1098 1206 1314 1422 1530 1637 0.190 1169 1276 1384 1492 1600 1708 0.204 1267 1374 1482 1590 1698 1806 0.224 1389 1497 1605 1713 1821 1929 0.250 717 825 933 1041 1149 1256 0.102 764 872 979 1087 1195 1303 0.109 810 918 1025 1133 1241 1349 0.116 868 976 1084 1192 1300 1408 0.125 926 1034 1142 1250 1358 1466 0.134 997 1104 1212 1320 1428 1536 0.145 2.000 1066 1174 1282 1389 1497 1605 0.156 1183 1291 1399 1507 1615 1723 0.175 1274 1382 1490 1598 1706 1813 0.190 1358 1465 1573 1681 1789 1897 0.204 1474 1582 1690 1798 1905 2013 0.224 1621 1729 1837 1945 2052 2160 0.250 1784 1892 2000 2108 2216 2324 0.280 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 941 966 986 1007 1027 1052 1077 1022 1054 1081 1108 1134 1168 1201 1241 1279 1344 1103 1142 1175 1209 1242 1284 1325 1375 1424 1506 1569 1627 1183 1230 1270 1310 1349 1400 1449 1509 1568 1668 1745 1816 1914 2036 1364 1411 1457 1515 1573 1644 1713 1830 1921 2005 2121 2268 2431

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 21 of 36

Shear Values - Tenaris HS-90 (CT90) Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

90000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 1042 1150 1258 1366 1473 1581 0.125 1113 1220 1328 1436 1544 1652 0.134 1198 1306 1414 1522 1629 1737 0.145 1283 1390 1498 1606 1714 1822 0.156 1427 1534 1642 1750 1858 1966 0.175 2.375 1538 1646 1754 1862 1970 2077 0.190 1641 1749 1857 1964 2072 2180 0.204 1785 1893 2001 2109 2217 2324 0.224 1968 2076 2184 2292 2400 2508 0.250 2173 2281 2389 2497 2605 2713 0.280 1237 1345 1452 1560 1668 1776 0.134 1332 1440 1548 1656 1764 1872 0.145 1427 1535 1643 1751 1858 1966 0.156 1589 1696 1804 1912 2020 2128 0.175 2.625 1714 1822 1930 2038 2146 2253 0.190 1830 1938 2046 2153 2261 2369 0.204 1993 2101 2208 2316 2424 2532 0.224 2200 2308 2416 2523 2631 2739 0.250 2433 2541 2649 2756 2864 2972 0.280 1467 1575 1682 1790 1898 2006 0.145 1572 1679 1787 1895 2003 2111 0.156 1751 1859 1966 2074 2182 2290 0.175 1890 1998 2106 2214 2322 2429 0.190 2.875 2019 2127 2235 2342 2450 2558 0.204 2200 2308 2416 2524 2632 2739 0.224 2432 2539 2647 2755 2863 2971 0.250 x x x 2692 2800 2908 0.280 2156 2264 2372 2479 2587 2695 0.175 2330 2438 2546 2654 2762 2869 0.190 x 2491 2599 2707 2815 2923 0.204 3.500 x x x 2719 2827 2935 0.224 x x x x x x 0.250 x x x x x x 0.280 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 1689 1760 1845 1930 2074 2185 2288 2432 2615 2821 1884 1979 2074 2236 2361 2477 2640 2847 x 2114 2219 2398 2537 2666 2847 x x 2803 2977 x x x x

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 22 of 36

Shear Values - Tenaris HS-110 (CT110) Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

110000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 458 566 674 782 890 997 0.087 497 605 713 820 928 1036 0.095 530 638 746 854 962 1069 0.102 563 671 779 887 995 1102 0.109 596 704 811 919 1027 1135 0.116 1.250 637 745 853 960 1068 1176 0.125 677 785 893 1001 1109 1216 0.134 726 833 941 1049 1157 1265 0.145 773 881 989 1096 1204 1312 0.156 852 960 1068 1175 1283 1391 0.175 557 665 772 880 988 1096 0.087 604 712 820 928 1036 1144 0.095 646 754 861 969 1077 1185 0.102 687 794 902 1010 1118 1226 0.109 727 835 943 1051 1158 1266 0.116 778 886 994 1102 1210 1318 0.125 1.500 829 937 1045 1152 1260 1368 0.134 890 998 1105 1213 1321 1429 0.145 949 1057 1165 1273 1381 1489 0.156 1050 1158 1266 1374 1481 1589 0.175 1127 1235 1343 1451 1559 1666 0.190 1197 1305 1413 1521 1629 1736 0.204 655 763 871 979 1087 1194 0.087 712 820 928 1036 1143 1251 0.095 761 869 977 1085 1193 1300 0.102 810 918 1026 1134 1241 1349 0.109 858 966 1074 1182 1290 1398 0.116 920 1028 1136 1243 1351 1459 0.125 981 1088 1196 1304 1412 1520 0.134 1.750 1054 1162 1270 1377 1485 1593 0.145 1126 1234 1342 1450 1557 1665 0.156 1248 1356 1464 1572 1680 1787 0.175 1342 1450 1558 1666 1774 1881 0.190 1428 1536 1644 1752 1860 1967 0.204 1548 1656 1764 1872 1979 2087 0.224 1698 1806 1914 2022 2130 2237 0.250 877 985 1092 1200 1308 1416 0.102 933 1041 1149 1257 1365 1473 0.109 990 1098 1205 1313 1421 1529 0.116 1061 1169 1277 1385 1493 1601 0.125 1132 1240 1348 1456 1564 1672 0.134 1218 1326 1434 1542 1649 1757 0.145 2.000 1303 1411 1518 1626 1734 1842 0.156 1446 1554 1662 1770 1878 1986 0.175 1557 1665 1773 1881 1989 2097 0.190 1659 1767 1875 1983 2091 2198 0.204 1802 1909 2017 2125 2233 2341 0.224 1981 2089 2197 2305 2413 2520 0.250 2181 2289 2397 2504 2612 2720 0.280 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 1105 1144 1177 1210 1243 1284 1324 1373 1420 1499 1204 1251 1293 1334 1374 1425 1476 1537 1597 1697 1774 1844 1302 1359 1408 1457 1505 1567 1628 1701 1773 1895 1989 2075 2195 2345 1524 1580 1637 1708 1779 1865 1950 2093 2204 2306 2449 2628 2828

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 23 of 36

Shear Values - Tenaris HS-110 (CT110) Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

110000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 1187 1295 1402 1510 1618 1726 0.116 1274 1382 1489 1597 1705 1813 0.125 1360 1468 1576 1683 1791 1899 0.134 1464 1572 1680 1788 1896 2004 0.145 1568 1675 1783 1891 1999 2107 0.156 2.375 1744 1851 1959 2067 2175 2283 0.175 1880 1988 2096 2204 2311 2419 0.190 2006 2113 2221 2329 2437 2545 0.204 2182 2290 2398 2506 2613 2721 0.224 2406 2514 2622 2729 2837 2945 0.250 x x 2656 2764 2872 2980 0.280 1512 1619 1727 1835 1943 2051 0.134 1628 1736 1844 1952 2060 2168 0.145 1744 1852 1960 2068 2176 2283 0.156 1942 2049 2157 2265 2373 2481 0.175 2.625 2095 2203 2311 2419 2527 2634 0.190 2237 2344 2452 2560 2668 2776 0.204 2436 2543 2651 2759 2867 2975 0.224 x x x 2689 2797 2905 0.250 x x x x x 2973 0.280 1793 1900 2008 2116 2224 2332 0.145 1921 2029 2137 2244 2352 2460 0.156 2140 2248 2355 2463 2571 2679 0.175 2310 2418 2526 2634 2742 2849 0.190 2.875 x 2468 2575 2683 2791 2899 0.204 x x x 2689 2797 2905 0.224 x x x x x 2972 0.250 x x x x x x 0.280 x x 2635 2743 2851 2959 0.175 x x x x 2848 2956 0.190 x x x x x x 0.204 3.500 x x x x x x 0.224 x x x x x x 0.250 x x x x x x 0.280 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 1834 1921 2007 2111 2215 2391 2527 2653 2829 x x 2159 2276 2391 2589 2742 2884 x x x 2440 2568 2787 2957 x x x x x x x x x x

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 24 of 36

Shear Values - Tenaris HS-80 CRA Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

80000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 39 147 255 363 471 578 0.035 54 161 269 377 485 593 0.050 0.375 66 174 282 390 498 606 0.065 74 182 290 398 505 613 0.075 54 161 269 377 485 593 0.035 74 182 290 398 505 613 0.050 93 201 309 417 524 632 0.500 0.065 105 213 321 428 536 644 0.075 122 229 337 445 553 661 0.090 68 176 284 392 499 607 0.035 95 203 310 418 526 634 0.050 120 228 336 443 551 659 0.065 136 244 352 459 567 675 0.075 0.625 159 266 374 482 590 698 0.090 173 281 389 496 604 712 0.100 185 293 401 509 617 724 0.109 206 314 422 529 637 745 0.125 82 190 298 406 514 622 0.035 115 223 331 439 547 654 0.050 147 254 362 470 578 686 0.065 167 275 382 490 598 706 0.075 196 303 411 519 627 735 0.750 0.090 214 322 430 538 645 753 0.100 230 338 446 554 661 769 0.109 257 365 473 581 689 796 0.125 272 380 488 595 703 811 0.134 136 244 352 459 567 675 0.050 173 281 389 497 605 713 0.065 198 305 413 521 629 737 0.075 233 341 448 556 664 772 0.090 255 363 471 579 687 794 0.875 0.100 275 383 491 598 706 814 0.109 309 417 524 632 740 848 0.125 327 435 543 651 758 866 0.134 364 472 579 687 795 903 0.153 156 264 372 480 588 696 0.050 200 308 416 524 632 739 0.065 228 336 444 552 660 768 0.075 270 378 485 593 701 809 0.090 296 404 512 620 728 836 1.000 0.100 320 428 536 643 751 859 0.109 360 468 576 684 792 899 0.125 382 490 598 706 814 921 0.134 427 535 642 750 858 966 0.153 198 305 413 521 629 737 0.050 254 362 469 577 685 793 0.065 290 398 506 614 722 829 0.075 344 452 560 667 775 883 0.090 1.250 379 487 594 702 810 918 0.100 410 517 625 733 841 949 0.109 463 571 679 787 894 1002 0.125 493 600 708 816 924 1032 0.134 553 661 768 876 984 1092 0.153 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 686 701 713 721 701 721 740 752 769 715 742 767 783 806 820 832 853 729 762 794 814 843 861 877 904 919 783 820 845 880 902 922 956 974 1011 803 847 876 917 943 967 1007 1029 1074 845 901 937 991 1026 1057 1110 1140 1200

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 25 of 36

Shear Values - Tenaris HS-80 CRA Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

80000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 307 415 523 631 739 846 0.065 352 460 568 676 783 891 0.075 418 526 634 741 849 957 0.090 461 569 677 785 892 1000 0.100 1.500 499 607 715 823 931 1039 0.109 566 674 782 890 997 1105 0.125 603 711 819 926 1034 1142 0.134 679 787 894 1002 1110 1218 0.153 414 522 629 737 845 953 0.075 492 600 708 816 923 1031 0.090 543 651 759 867 975 1083 0.100 1.750 589 697 805 913 1020 1128 0.109 669 777 885 993 1100 1208 0.125 713 821 929 1037 1145 1252 0.134 805 913 1020 1128 1236 1344 0.153 566 674 782 890 998 1105 0.090 626 734 841 949 1057 1165 0.100 679 787 895 1002 1110 1218 0.109 2.000 772 880 988 1095 1203 1311 0.125 824 931 1039 1147 1255 1363 0.134 931 1039 1146 1254 1362 1470 0.153 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 954 999 1065 1108 1146 1213 1250 1326 1061 1139 1190 1236 1316 1360 1452 1213 1273 1326 1419 1471 1578

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 26 of 36

Global Tubing

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M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 27 of 36

Shear Values - Global Tubing GT-70 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

70000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 154 262 370 478 586 694 0.080 166 274 382 490 598 705 0.087 179 287 395 503 611 719 0.750 0.095 190 298 406 514 622 730 0.102 201 309 417 525 633 741 0.109 212 320 428 536 643 751 0.080 229 337 445 552 660 768 0.087 248 356 463 571 679 787 0.095 264 372 480 587 695 803 0.102 1.000 280 388 496 603 711 819 0.109 296 403 511 619 727 835 0.116 315 423 531 639 747 854 0.125 334 442 550 658 766 874 0.134 270 378 485 593 701 809 0.080 292 399 507 615 723 831 0.087 316 424 532 640 748 855 0.095 337 445 553 661 769 877 0.102 358 466 574 682 790 898 0.109 379 487 595 703 810 918 0.116 1.250 405 513 621 729 837 944 0.125 431 539 647 754 862 970 0.134 462 570 677 785 893 1001 0.145 492 600 708 815 923 1031 0.156 542 650 758 866 973 1081 0.175 580 688 796 904 1012 1120 0.190 615 723 831 938 1046 1154 0.204 354 462 570 678 786 893 0.087 385 492 600 708 816 924 0.095 411 519 627 734 842 950 0.102 437 545 653 760 868 976 0.109 463 571 678 786 894 1002 0.116 495 603 711 819 927 1034 0.125 1.500 528 635 743 851 959 1067 0.134 566 674 782 890 998 1105 0.145 604 712 820 928 1036 1143 0.156 668 776 884 992 1100 1207 0.175 717 825 933 1041 1149 1256 0.190 762 870 978 1085 1193 1301 0.204 484 592 700 808 916 1024 0.102 515 623 731 839 947 1055 0.109 546 654 762 870 978 1085 0.116 585 693 801 909 1017 1125 0.125 624 732 840 948 1055 1163 0.134 1.750 671 779 886 994 1102 1210 0.145 717 824 932 1040 1148 1256 0.156 794 902 1010 1118 1226 1333 0.175 854 962 1070 1178 1286 1393 0.190 909 1017 1125 1232 1340 1448 0.204 985 1093 1201 1309 1416 1524 0.224 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 801 813 826 837 848 859 876 895 911 927 943 962 981 917 939 963 984 1005 1026 1052 1078 1109 1139 1189 1227 1262 1001 1032 1058 1084 1110 1142 1175 1213 1251 1315 1364 1409 1131 1162 1193 1232 1271 1318 1364 1441 1501 1556 1632

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 28 of 36

Shear Values - Global Tubing GT-70 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

70000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 558 666 774 881 989 1097 0.102 594 702 810 918 1025 1133 0.109 630 738 845 953 1061 1169 0.116 675 783 891 999 1107 1215 0.125 721 828 936 1044 1152 1260 0.134 775 883 991 1099 1206 1314 0.145 2.000 829 937 1045 1153 1260 1368 0.156 920 1028 1136 1244 1352 1460 0.175 991 1099 1207 1315 1422 1530 0.190 1056 1164 1272 1379 1487 1595 0.204 1146 1254 1362 1470 1578 1686 0.224 1261 1369 1476 1584 1692 1800 0.250 811 918 1026 1134 1242 1350 0.125 865 973 1081 1189 1297 1405 0.134 932 1040 1148 1255 1363 1471 0.145 998 1105 1213 1321 1429 1537 0.156 2.375 1110 1217 1325 1433 1541 1649 0.175 1196 1304 1412 1520 1628 1736 0.190 1276 1384 1492 1600 1708 1816 0.204 1389 1496 1604 1712 1820 1928 0.224 1531 1639 1747 1854 1962 2070 0.250 962 1070 1178 1285 1393 1501 0.134 1036 1144 1252 1360 1468 1575 0.145 1110 1218 1326 1433 1541 1649 0.156 1236 1343 1451 1559 1667 1775 0.175 1333 1441 1549 1657 1765 1872 0.190 2.625 1423 1531 1639 1747 1855 1962 0.204 1550 1658 1766 1873 1981 2089 0.224 1711 1819 1927 2035 2142 2250 0.250 1868 1976 2084 2192 2300 2408 0.276 2010 2118 2226 2334 2441 2549 0.300 1222 1330 1438 1546 1654 1762 0.156 1362 1470 1577 1685 1793 1901 0.175 1470 1578 1686 1794 1902 2009 0.190 1570 1678 1786 1894 2002 2109 0.204 2.875 1711 1819 1927 2035 2143 2250 0.224 1891 1999 2107 2215 2323 2430 0.250 2067 2175 2283 2391 2499 2606 0.276 2226 2334 2442 2550 2658 2765 0.300 1391 1499 1607 1714 1822 1930 0.156 1551 1659 1766 1874 1982 2090 0.175 1676 1783 1891 1999 2107 2215 0.190 1791 1899 2006 2114 2222 2330 0.204 3.250 1953 2061 2169 2277 2385 2493 0.224 2161 2269 2377 2485 2593 2701 0.250 2365 2473 2581 2689 2797 2905 0.276 2550 2658 x 2766 2874 2982 0.300 1677 1785 1893 2000 2108 2216 0.175 1812 1920 2028 2136 2244 2352 0.190 1938 2046 2153 2261 2369 2477 0.204 3.500 2115 2223 2330 2438 2546 2654 0.224 2342 2449 2557 2665 2773 2881 0.250 x 2564 2672 2780 2888 2996 0.276 x x x 2767 2874 2982 0.300 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 1205 1241 1277 1322 1368 1422 1476 1567 1638 1703 1793 1908 1458 1512 1579 1645 1757 1843 1923 2036 2178 1609 1683 1757 1883 1980 2070 2197 2358 2515 2657 1869 2009 2117 2217 2358 2538 2714 2873 2038 2198 2323 2438 2600 2808 x x 2324 2459 2585 2762 2989 x x

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 29 of 36

Shear Values - Global Tubing GT-80 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

80000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 177 284 392 500 608 716 0.080 190 298 406 513 621 729 0.087 205 313 421 528 636 744 0.750 0.095 218 326 433 541 649 757 0.102 230 338 446 554 661 769 0.109 242 350 458 566 674 782 0.080 262 369 477 585 693 801 0.087 283 391 499 607 715 822 0.095 302 410 517 625 733 841 0.102 1.000 320 428 536 643 751 859 0.109 338 446 553 661 769 877 0.116 360 468 576 684 792 899 0.125 382 490 598 706 814 921 0.134 308 416 524 632 740 847 0.080 333 441 549 657 765 872 0.087 361 469 577 685 793 901 0.095 386 493 601 709 817 925 0.102 410 517 625 733 841 949 0.109 433 541 649 757 865 972 0.116 1.250 463 571 679 787 894 1002 0.125 493 600 708 816 924 1032 0.134 528 636 743 851 959 1067 0.145 562 670 778 886 993 1101 0.156 620 727 835 943 1051 1159 0.175 663 771 879 987 1095 1202 0.190 703 811 918 1026 1134 1242 0.204 405 513 621 728 836 944 0.087 440 547 655 763 871 979 0.095 470 577 685 793 901 1009 0.102 499 607 715 823 931 1039 0.109 529 637 744 852 960 1068 0.116 566 674 782 890 997 1105 0.125 1.500 603 711 819 926 1034 1142 0.134 647 755 863 971 1078 1186 0.145 691 798 906 1014 1122 1230 0.156 764 872 979 1087 1195 1303 0.175 820 928 1035 1143 1251 1359 0.190 871 979 1086 1194 1302 1410 0.204 589 697 805 913 1020 1128 0.109 624 732 840 948 1056 1163 0.116 669 777 885 993 1100 1208 0.125 713 821 929 1037 1145 1252 0.134 766 874 982 1090 1198 1306 0.145 1.750 819 927 1035 1142 1250 1358 0.156 908 1016 1123 1231 1339 1447 0.175 976 1084 1192 1300 1408 1515 0.190 1039 1147 1254 1362 1470 1578 0.204 1126 1234 1341 1449 1557 1665 0.224 679 787 895 1002 1110 1218 0.109 720 828 935 1043 1151 1259 0.116 772 880 988 1095 1203 1311 0.125 824 931 1039 1147 1255 1363 0.134 886 994 1102 1209 1317 1425 0.145 2.000 947 1055 1163 1271 1379 1487 0.156 1052 1160 1268 1375 1483 1591 0.175 1133 1240 1348 1456 1564 1672 0.190 1207 1315 1422 1530 1638 1746 0.204 1310 1418 1526 1634 1742 1849 0.224 1441 1549 1657 1764 1872 1980 0.250 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 824 837 852 865 877 889 909 930 949 967 985 1007 1029 955 980 1008 1033 1057 1080 1110 1140 1175 1209 1267 1310 1350 1052 1087 1117 1146 1176 1213 1250 1294 1338 1411 1467 1518 1236 1271 1316 1360 1414 1466 1555 1623 1686 1773 1326 1367 1419 1471 1533 1594 1699 1780 1854 1957 2088

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 30 of 36

Shear Values - Global Tubing GT-80 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

80000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 926 1034 1142 1250 1358 1465 0.125 989 1097 1205 1313 1420 1528 0.134 1065 1173 1281 1388 1496 1604 0.145 1140 1248 1356 1464 1571 1679 0.156 2.375 1268 1376 1484 1592 1699 1807 0.175 1367 1475 1583 1691 1799 1906 0.190 1459 1566 1674 1782 1890 1998 0.204 1587 1695 1803 1910 2018 2126 0.224 1750 1858 1965 2073 2181 2289 0.250 1099 1207 1315 1423 1531 1639 0.134 1184 1292 1400 1508 1616 1724 0.145 1269 1376 1484 1592 1700 1808 0.156 1412 1520 1628 1736 1843 1951 0.175 1524 1632 1739 1847 1955 2063 0.190 2.625 1627 1734 1842 1950 2058 2166 0.204 1771 1879 1987 2095 2203 2311 0.224 1956 2063 2171 2279 2387 2495 0.250 2135 2243 2351 2459 2567 2674 0.276 2297 2405 2513 2621 2729 2836 0.300 1397 1505 1613 1721 1828 1936 0.156 1556 1664 1772 1880 1988 2095 0.175 1680 1788 1896 2004 2112 2219 0.190 1795 1902 2010 2118 2226 2334 0.204 2.875 1956 2064 2171 2279 2387 2495 0.224 2161 2269 2377 2485 2593 2701 0.250 2363 2470 2578 2686 2794 2902 0.276 2544 2652 x 2760 2868 2976 0.300 1590 1698 1805 1913 2021 2129 0.156 1772 1880 1988 2096 2204 2312 0.175 1915 2023 2131 2238 2346 2454 0.190 2047 2154 2262 2370 2478 2586 0.204 3.250 2232 2340 2448 2556 2664 2772 0.224 x 2470 2578 2686 2794 2902 0.250 x x x 2703 2811 2919 0.276 x x x x x 2915 0.300 1916 2024 2132 2240 2348 2456 0.175 2071 2179 2287 2395 2503 2610 0.190 2215 2322 2430 2538 2646 2754 0.204 3.500 2417 2525 2633 2740 2848 2956 0.224 2676 x x 2784 2892 3000 0.250 x x x x x 2931 0.276 x x x x x x 0.300 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 1573 1636 1712 1787 1915 2014 2106 2234 2397 1746 1831 1916 2059 2171 2274 2418 2603 2782 2944 2044 2203 2327 2442 2603 2808 x x 2237 2419 2562 2694 2879 x x x 2563 2718 2862 x x x x

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 31 of 36

Shear Values - Global Tubing GT-90 Yield Strength (psi)

90000

Require d Hydraulic pre ssure at Wellbore (psi)

Specified Wall 0 2500 5000 7500 10000 12500 Thickness (in) 199 306 414 522 630 738 0.080 214 322 429 537 645 753 0.087 231 338 446 554 662 770 0.750 0.095 245 353 461 568 676 784 0.102 259 367 475 582 690 798 0.109 273 381 488 596 704 812 0.080 294 402 510 618 726 833 0.087 319 426 534 642 750 858 0.095 339 447 555 663 771 879 0.102 1.000 360 468 576 683 791 899 0.109 380 488 596 703 811 919 0.116 405 513 621 729 837 944 0.125 430 538 646 753 861 969 0.134 347 455 562 670 778 886 0.080 375 483 591 698 806 914 0.087 407 514 622 730 838 946 0.095 434 542 650 757 865 973 0.102 461 569 676 784 892 1000 0.109 487 595 703 811 919 1027 0.116 1.250 521 629 737 845 952 1060 0.125 554 662 770 878 985 1093 0.134 594 702 809 917 1025 1133 0.145 632 740 848 956 1064 1172 0.156 697 805 913 1021 1128 1236 0.175 746 854 962 1070 1178 1285 0.190 791 898 1006 1114 1222 1330 0.204 455 563 671 779 887 995 0.087 495 602 710 818 926 1034 0.095 528 636 744 852 960 1068 0.102 562 670 777 885 993 1101 0.109 595 703 811 918 1026 1134 0.116 637 745 853 960 1068 1176 0.125 1.500 678 786 894 1002 1110 1217 0.134 728 836 944 1051 1159 1267 0.145 777 885 993 1100 1208 1316 0.156 859 967 1075 1183 1290 1398 0.175 922 1030 1138 1246 1354 1461 0.190 980 1087 1195 1303 1411 1519 0.204 663 771 878 986 1094 1202 0.109 702 810 918 1026 1134 1241 0.116 753 860 968 1076 1184 1292 0.125 802 910 1018 1126 1234 1342 0.134 862 970 1078 1186 1294 1401 0.145 1.750 921 1029 1137 1245 1353 1461 0.156 1021 1129 1237 1345 1453 1560 0.175 1098 1206 1314 1422 1530 1637 0.190 1169 1276 1384 1492 1600 1708 0.204 1267 1374 1482 1590 1698 1806 0.224 764 872 979 1087 1195 1303 0.109 810 918 1025 1133 1241 1349 0.116 868 976 1084 1192 1300 1408 0.125 926 1034 1142 1250 1358 1466 0.134 997 1104 1212 1320 1428 1536 0.145 2.000 1066 1174 1282 1389 1497 1605 0.156 1183 1291 1399 1507 1615 1723 0.175 1274 1382 1490 1598 1706 1813 0.190 1358 1465 1573 1681 1789 1897 0.204 1474 1582 1690 1798 1905 2013 0.224 1621 1729 1837 1945 2052 2160 0.250 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

Spe cified O utside Diameter (in)

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15000 846 861 878 892 906 920 941 966 986 1007 1027 1052 1077 994 1022 1054 1081 1108 1134 1168 1201 1241 1279 1344 1393 1438 1103 1142 1175 1209 1242 1284 1325 1375 1424 1506 1569 1627 1310 1349 1400 1449 1509 1568 1668 1745 1816 1914 1411 1457 1515 1573 1644 1713 1830 1921 2005 2121 2268

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 32 of 36

Shear Values - Global Tubing GT-90 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

90000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 1042 1150 1258 1366 1473 1581 0.125 1113 1220 1328 1436 1544 1652 0.134 1198 1306 1414 1522 1629 1737 0.145 1283 1390 1498 1606 1714 1822 0.156 2.375 1427 1534 1642 1750 1858 1966 0.175 1538 1646 1754 1862 1970 2077 0.190 1641 1749 1857 1964 2072 2180 0.204 1785 1893 2001 2109 2217 2324 0.224 1968 2076 2184 2292 2400 2508 0.250 1237 1345 1452 1560 1668 1776 0.134 1332 1440 1548 1656 1764 1872 0.145 1427 1535 1643 1751 1858 1966 0.156 1589 1696 1804 1912 2020 2128 0.175 1714 1822 1930 2038 2146 2253 0.190 2.625 1830 1938 2046 2153 2261 2369 0.204 1993 2101 2208 2316 2424 2532 0.224 2200 2308 2416 2523 2631 2739 0.250 2402 2510 2618 2726 2834 2941 0.276 2584 2692 x x 2800 2908 0.300 1572 1679 1787 1895 2003 2111 0.156 1751 1859 1966 2074 2182 2290 0.175 1890 1998 2106 2214 2322 2429 0.190 2019 2127 2235 2342 2450 2558 0.204 2.875 2200 2308 2416 2524 2632 2739 0.224 2432 2539 2647 2755 2863 2971 0.250 2658 x x 2766 2874 2981 0.276 x x x x 2862 2970 0.300 1788 1896 2004 2112 2220 2328 0.156 1994 2102 2210 2317 2425 2533 0.175 2154 2262 2370 2478 2586 2693 0.190 2302 2410 2518 2626 2734 2842 0.204 3.250 x 2512 2619 2727 2835 2943 0.224 x x x 2779 2887 2995 0.250 x x x x x x 0.276 x x x x x x 0.300 2156 2264 2372 2479 2587 2695 0.175 2330 2438 2546 2654 2762 2869 0.190 x 2491 2599 2707 2815 2923 0.204 3.500 x x x 2719 2827 2935 0.224 x x x x x x 0.250 x x x x x x 0.276 x x x x x x 0.300 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 1689 1760 1845 1930 2074 2185 2288 2432 2615 1884 1979 2074 2236 2361 2477 2640 2847 x x 2219 2398 2537 2666 2847 x x x 2435 2641 2801 2949 x x x x 2803 2977 x x x x x

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 33 of 36

Shear Values - Global Tubing GT-100 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

100000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 221 329 436 544 652 760 0.080 237 345 453 561 669 777 0.087 256 364 472 580 688 795 0.750 0.095 272 380 488 596 703 811 0.102 288 395 503 611 719 827 0.109 303 411 519 627 734 842 0.080 327 435 543 651 758 866 0.087 354 462 570 677 785 893 0.095 377 485 593 701 808 916 0.102 1.000 400 508 616 723 831 939 0.109 422 530 638 746 854 961 0.116 450 558 666 774 882 989 0.125 478 586 693 801 909 1017 0.134 385 493 601 709 817 925 0.080 417 524 632 740 848 956 0.087 452 560 667 775 883 991 0.095 482 590 698 806 913 1021 0.102 512 620 728 836 943 1051 0.109 542 649 757 865 973 1081 0.116 1.250 579 687 795 902 1010 1118 0.125 616 723 831 939 1047 1155 0.134 660 767 875 983 1091 1199 0.145 703 810 918 1026 1134 1242 0.156 774 882 990 1098 1206 1314 0.175 829 937 1045 1153 1260 1368 0.190 878 986 1094 1202 1310 1418 0.204 506 614 722 830 937 1045 0.087 550 657 765 873 981 1089 0.095 587 695 803 911 1018 1126 0.102 624 732 840 948 1056 1163 0.109 661 769 877 984 1092 1200 0.116 708 815 923 1031 1139 1247 0.125 1.500 754 861 969 1077 1185 1293 0.134 809 917 1025 1132 1240 1348 0.145 863 971 1079 1187 1295 1402 0.156 955 1062 1170 1278 1386 1494 0.175 1025 1133 1240 1348 1456 1564 0.190 1088 1196 1304 1412 1520 1628 0.204 736 844 952 1060 1168 1276 0.109 780 888 996 1104 1212 1320 0.116 836 944 1052 1160 1268 1375 0.125 891 999 1107 1215 1323 1431 0.134 1.750 958 1066 1174 1282 1389 1497 0.145 1024 1132 1239 1347 1455 1563 0.156 1135 1243 1350 1458 1566 1674 0.175 1220 1328 1436 1544 1652 1759 0.190 1298 1406 1514 1622 1730 1838 0.204 849 956 1064 1172 1280 1388 0.109 900 1008 1115 1223 1331 1439 0.116 965 1073 1181 1288 1396 1504 0.125 1029 1137 1245 1353 1461 1569 0.134 1107 1215 1323 1431 1539 1647 0.145 2.000 1184 1292 1400 1508 1616 1723 0.156 1315 1423 1531 1638 1746 1854 0.175 1416 1524 1631 1739 1847 1955 0.190 1508 1616 1724 1832 1940 2048 0.204 1638 1746 1853 1961 2069 2177 0.224 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 868 884 903 919 935 950 974 1001 1024 1047 1069 1097 1125 1032 1064 1099 1129 1159 1189 1226 1263 1307 1350 1422 1476 1526 1153 1197 1234 1271 1308 1355 1401 1456 1510 1602 1672 1735 1383 1427 1483 1539 1605 1671 1782 1867 1945 1496 1547 1612 1676 1754 1831 1962 2063 2155 2285

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 34 of 36

Shear Values - Global Tubing GT-100 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

100000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 1158 1266 1374 1481 1589 1697 0.125 1236 1344 1452 1560 1668 1775 0.134 1331 1439 1547 1655 1763 1870 0.145 1425 1533 1641 1749 1856 1964 0.156 2.375 1585 1693 1801 1909 2016 2124 0.175 1709 1817 1925 2033 2140 2248 0.190 1823 1931 2039 2147 2255 2363 0.204 1984 2091 2199 2307 2415 2523 0.224 2187 2295 2403 2511 2618 2726 0.250 1374 1482 1590 1698 1806 1913 0.134 1480 1588 1696 1804 1912 2020 0.145 1586 1694 1801 1909 2017 2125 0.156 1765 1873 1981 2089 2196 2304 0.175 2.625 1905 2013 2120 2228 2336 2444 0.190 2033 2141 2249 2357 2465 2572 0.204 2214 2322 2430 2538 2646 2753 0.224 2444 2552 2660 2768 2876 2984 0.250 1746 1854 1962 2070 2178 2285 0.156 1945 2053 2161 2269 2377 2484 0.175 2100 2208 2316 2424 2532 2639 0.190 2.875 2243 2351 2459 2567 2675 2782 0.204 2445 2553 2660 2768 2876 2984 0.224 x x x 2702 2810 2917 0.250 x x x x x 2953 0.276 1987 2095 2203 2311 2418 2526 0.156 2215 2323 2431 2539 2647 2755 0.175 2394 2501 2609 2717 2825 2933 0.190 3.250 2558 2666 x 2774 2882 2990 0.204 x x x x 2791 2898 0.224 x x x x x x 0.250 x x x x x x 0.276 2396 2503 2611 2719 2827 2935 0.175 2589 2697 x x 2805 2913 0.190 x x x 2768 2876 2984 0.204 3.500 x x x x x x 0.224 x x x x x x 0.250 x x x x x x 0.276 x x x x x x 0.300 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 1805 1883 1978 2072 2232 2356 2470 2631 2834 2021 2127 2233 2412 2552 2680 2861 x 2393 2592 2747 2890 x x x 2634 2862 x x x x x x x x x x x x

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 35 of 36

Shear Values - Global Tubing GT-110 Yie ld Stre ngth (psi) Spe cifie d O utside Diame te r (in)

110000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 243 351 458 566 674 782 0.080 261 369 477 585 693 800 0.087 282 390 497 605 713 821 0.750 0.095 299 407 515 623 731 839 0.102 316 424 532 640 748 856 0.109 333 441 549 657 765 872 0.080 360 468 575 683 791 899 0.087 389 497 605 713 821 929 0.095 415 523 630 738 846 954 0.102 1.000 440 548 655 763 871 979 0.109 464 572 680 788 896 1004 0.116 495 603 711 819 927 1034 0.125 526 633 741 849 957 1065 0.134 424 532 640 747 855 963 0.080 458 566 674 782 890 997 0.087 497 605 713 820 928 1036 0.095 530 638 746 854 962 1069 0.102 563 671 779 887 995 1102 0.109 596 704 811 919 1027 1135 0.116 1.250 637 745 853 960 1068 1176 0.125 677 785 893 1001 1109 1216 0.134 726 833 941 1049 1157 1265 0.145 773 881 989 1096 1204 1312 0.156 852 960 1068 1175 1283 1391 0.175 912 1020 1128 1236 1343 1451 0.190 966 1074 1182 1290 1398 1506 0.204 557 665 772 880 988 1096 0.087 604 712 820 928 1036 1144 0.095 646 754 861 969 1077 1185 0.102 687 794 902 1010 1118 1226 0.109 727 835 943 1051 1158 1266 0.116 778 886 994 1102 1210 1318 0.125 1.500 829 937 1045 1152 1260 1368 0.134 890 998 1105 1213 1321 1429 0.145 949 1057 1165 1273 1381 1489 0.156 1050 1158 1266 1374 1481 1589 0.175 1127 1235 1343 1451 1559 1666 0.190 1197 1305 1413 1521 1629 1736 0.204 810 918 1026 1134 1241 1349 0.109 858 966 1074 1182 1290 1398 0.116 920 1028 1136 1243 1351 1459 0.125 981 1088 1196 1304 1412 1520 0.134 1.750 1054 1162 1270 1377 1485 1593 0.145 1126 1234 1342 1450 1557 1665 0.156 1248 1356 1464 1572 1680 1787 0.175 1342 1450 1558 1666 1774 1881 0.190 1428 1536 1644 1752 1860 1967 0.204 933 1041 1149 1257 1365 1473 0.109 990 1098 1205 1313 1421 1529 0.116 1061 1169 1277 1385 1493 1601 0.125 1132 1240 1348 1456 1564 1672 0.134 1218 1326 1434 1542 1649 1757 0.145 2.000 1303 1411 1518 1626 1734 1842 0.156 1446 1554 1662 1770 1878 1986 0.175 1557 1665 1773 1881 1989 2097 0.190 1659 1767 1875 1983 2091 2198 0.204 1802 1909 2017 2125 2233 2341 0.224 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

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15000 890 908 929 946 963 980 1007 1036 1062 1087 1111 1142 1173 1071 1105 1144 1177 1210 1243 1284 1324 1373 1420 1499 1559 1613 1204 1251 1293 1334 1374 1425 1476 1537 1597 1697 1774 1844 1457 1505 1567 1628 1701 1773 1895 1989 2075 1580 1637 1708 1779 1865 1950 2093 2204 2306 2449

M60ES56-ACT9-GEN-001 Rev / 01 P a g e | 36 of 36

Shear Values - Global Tubing GT-110 Yie ld Stre ngth (psi)

110000

Re quire d Hydraulic pre ssure at We llbore (psi)

Spe cifie d O utside Diame te r (in)

Spe cifie d Wall 0 2500 5000 7500 10000 12500 Thickne ss (in) 1274 1382 1489 1597 1705 1813 0.125 1360 1468 1576 1683 1791 1899 0.134 1464 1572 1680 1788 1896 2004 0.145 1568 1675 1783 1891 1999 2107 0.156 2.375 1744 1851 1959 2067 2175 2283 0.175 1880 1988 2096 2204 2311 2419 0.190 2006 2113 2221 2329 2437 2545 0.204 2182 2290 2398 2506 2613 2721 0.224 2406 2514 2622 2729 2837 2945 0.250 1512 1619 1727 1835 1943 2051 0.134 1628 1736 1844 1952 2060 2168 0.145 1744 1852 1960 2068 2176 2283 0.156 1942 2049 2157 2265 2373 2481 0.175 2.625 2095 2203 2311 2419 2527 2634 0.190 2237 2344 2452 2560 2668 2776 0.204 2436 2543 2651 2759 2867 2975 0.224 2689 x x x 2797 2905 0.250 1921 2029 2137 2244 2352 2460 0.156 2140 2248 2355 2463 2571 2679 0.175 2310 2418 2526 2634 2742 2849 0.190 2.875 x 2468 2575 2683 2791 2899 0.204 2689 x x x 2797 2905 0.224 x x x x x 2972 0.250 x x x x x x 0.276 2186 2294 2401 2509 2617 2725 0.156 2437 2545 2653 2760 2868 2976 0.175 2633 x x 2741 2849 2956 0.190 3.250 x x x x 2814 2922 0.204 x x x x x x 0.224 x x x x x x 0.250 x x x x x x 0.276 2635 x x 2743 2851 2959 0.175 x x x x 2848 2956 0.190 x x x x x x 0.204 3.500 x x x x x x 0.224 x x x x x x 0.250 x x x x x x 0.276 x x x x x x 0.300 *Cells marked x designate will not shear. Bold and Italicised cells indicate 90% S.F. warning.

.

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15000 1921 2007 2111 2215 2391 2527 2653 2829 x 2159 2276 2391 2589 2742 2884 x x 2568 2787 2957 x x x x 2833 x x x x x x x x x x x x x

PRODUCT SERVICE BULLETIN

PSBL-EGA72 TOP SEAL FOR S/S RAMS

THE TOP SEAL AND SHEAR/SEAL RAM ASSEMBLY OF THE EGA72 BOP HAS CHANGED. TOP SEAL FROM 2005-2020 TO M601013282M. RAM ASSEMBLIES FROM EG72-TS88XB, EG72-TS88X TO M60EGA72-MS88XB

RIG/PLANT

ADDITIONAL CODE

REFERENCE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

REFERENCE DESCRIPTION

This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

CLIENT DOCUMENT NUMBER

DOCUMENT NUMBER

REV

Client Document Number

D60EGA72-PIB-002

01

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D60EGA72-PIB-002 Rev / 01 P a g e | 2 of 3 REVISION HISTORY

01 Rev

01/Sept/2015 Initial Release Date Reason for issue

CHANGE DESCRIPTION Rev 01

Description of Change Initial Release

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CP Prepared

JTM Checked

JD Approved

D60EGA72-PIB-002 Rev / 01 P a g e | 3 of 3 Assemblies & Parts Affected:    

All EGA72 BOP Assemblies 2005-2020 EG72-TS88XB, EG72-TS88X This change does not affect EG72 BOP Assemblies

Findings: During testing it has been observed that the Top Seal (2005-2020) can protrude out the front of the Ram assembly when installed in the BOP. In intermittent cases this causes the seals to operate incorrectly, causing damage to the seals.

Action: Effective immediately, All EGA72 BOPs that are equipped with a Shear/Seal ram assembly,EG72-TS88XB or EG72TS88X, will need to use M60EGA72-MS88XB. The change between the old assembly and the new assembly is the Top Seal. The Top Seal has changed from part number 2005-2020 to M601013282M. Please contact TOT Sales for assistance on ordering new Top Seal M601013282M.

Old Part No.:2005-2020 New Part No.: M601013282

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PRODUCT SERVICE BULLETIN PSBL-5.12 EC/EH SSR 2.875 & 3.50 5.12”, 10K, EC & EH SERIES RAM BODIES MODIFICATION FOR 2.875” & 3.50” COIL 5.12 SHEAR/SEAL RAM BODY RH: 9211-1188 9211-1188L 9211-1188B 9211-1188AB 5.12 SHEAR/SEAL RAM BODY LH: 9211-1288 9211-1288L 9211-1288B 9211-1288AB

RIG/PLANT

ADDITIONAL CODE

SDRL CODE

TOTAL PGS

REMARKS REFERENCE MAIN TAG NUMBER

CLIENT PO NUMBER

CLIENT DOCUMENT NUMBER

Client Document Number

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REFERENCE DESCRIPTION

DISCIPLINE This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

DOCUMENT NUMBER

REV

D601013344-PIB-001

02

D601013344-PIB-001 Rev / 02 P a g e | 2 of 3 REVISION HISTORY 02 01 Rev

29/Sept/2015

Revision

17/Sept/2015 Initial Release Date Reason for issue

CP

JD

MD

CP Prepared

JD Checked

KM Approved

CHANGE DESCRIPTION Rev 01 02

Description of Change Initial Release Revise drawing adding tolerance and part number location, face to machine; Authorized NOV TOT service center; New Revision level statement; Name change; Required Action section 1 & 2

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D601013344-PIB-001 Rev / 02 P a g e | 3 of 3

Scope Texas Oil Tools has identified a design issue regarding 5.12” Ram Bodies 9211-1188 Rev D and 9211-1288 Rev. C (and all prior revisions of both) for 2 7/8” coil causing failure to seal, and recommends all customers with effected part numbers to contact TOT for replacement.

Summary Texas Oil Tools was notified of sealing failures during equipment testing of new Shear Seal blades. Investigation determined that this issue was a tolerance stack up in ram bodies 9211-1188 and 9211-1288. During closing of the rams, the bodies made face to face contact prior to full elastomer energization for well bore sealing. Ram bodies OAL was 7.000” which has been reworked to 6.950” to ensure full elastomer energization. Ram body current revisions are 92111188 Rev. F and 9211-1288 Rev D. with current OAL of 6.950”.

Required Actions: 1) Ram bodies 9211-1188 Rev D and prior, 9211-1288 Rev C and prior, can be returned to TOT for replacement or modification. Ram body modification can be faced off to 6.950” as shown below. Contact TOT sales for modification or replacement instructions. Alternatively send parts to local NOV, TOT authorized service center. 2) TOT recommends replacing rams using 17-4 SST material with the 9211-1188AB and 9211-1288AB alloy rams.

3) After machining, remove current revision level then stamp with new revision level and date of modification (part number location as shown above in rework illustration). Revision level for Ram body 9211-1188AB is Rev. F and revision level for Ram body 92111288AB is Rev. D.

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PRODUCT SERVICE BULLETIN PSBL – HAL 7.06 10K SLIP RAM 7.06 10K ES SLIP RAMS M60ES7R-0G51AL.

RIG/PLANT

ADDITIONAL CODE

SDRL CODE

TOTAL PGS

REMARKS REFERENCE MAIN TAG NUMBER

CLIENT PO NUMBER

CLIENT DOCUMENT NUMBER

Client Document Number

www.nov.com

REFERENCE DESCRIPTION

DISCIPLINE This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

DOCUMENT NUMBER

REV

D601013435-PIB-001

03

D601013435-PIB-001 Rev / 03 P a g e | 2 of 6 REVISION HISTORY 03

10/Nov/2015

Revision

MD

KM

JD

02

06/Nov/2015

Revision

CP

MD

JD

01 Rev

5/Nov/2015 Date

RS Prepared

KM Checked

JD Approved

Initial Release Reason for issue

CHANGE DESCRIPTION Rev 01 02 03

Description of Change Initial Release Correct process step 1 pipe ram reference; step 2 optional, fix assembly # Remove option for hand pump in solution section.







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D601013435-PIB-001 Rev / 03 P a g e | 3 of 6

TOT Order: 435699 Serial Number: 131-40651 & 151-47488 Customer Assembly: M60HS-ES74L511X, 7.06 10K ES Quad Customer: Halliburton

Incident: Texas Oil Tools was notified on November 2nd 2015 by Halliburton that slip rams assembly M60ES7R0G51AL failed to hold approximately 8,300 ft. of 2.00” coil tubing.

Investigation: TOT engineering department has determined with the current slip inserts (M601009867-51) the 25° guide angle was too shallow and did not guide the coil tubing to center. In addition, the inserts sit just outside the ram body creating a small pinch point. While closing the rams the coil tubing was pinched between the step and the guide, causing the coil tubing to be sheared by the opposing slip insert guide. (See figure 1) TOT has determined that serial number 131-40651 and 151-47488 are the only 7.06 10K ES Quads with this issue.

Solution: Short term solution is to use the pipe rams to center the coil tubing then close the slip rams to grip and hold the coil. (See figure 2) Steps to complete this process are listed below. 1. Close pipe rams to center the coil tubing 2. Continue to hydraulically close the slip rams. Long term solution is a new design with an insert that has guides on both sides. Like the pipe ram, we have removed any areas that could be considered a pinch point causing this issue. (See figure 3) New ram assembly M60ES7R-0G51 will now be the required ram assembly for 2.00” coil tubing for the ES74 quad BOP. The old assembly M60ES7R-0G51AL will be obsolete and will no longer be used.

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D601013435-PIB-001 Rev / 03 P a g e | 4 of 6

(Figure 1) Slip ram with snag point and 25° angle

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D601013435-PIB-001 Rev / 03 P a g e | 5 of 6

(Figure 2) Short term pipe ram solution.

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D601013435-PIB-001 Rev / 03 P a g e | 6 of 6

(Figure 3) Long term solution ram assembly M60ES7R-0G51

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PRODUCT SERVICE BULLETIN

PSBL-EGA72 BONNET SEAL THE BONNET SEAL FOR ALL EGA BOPS HAS BEEN CHANGED. OLD SEAL: 7813-J377 NEW SEAL: P601013447

RIG/PLANT

ADDITIONAL CODE

SDRL CODE

TOTAL PGS

REMARKS REFERENCE MAIN TAG NUMBER

CLIENT PO NUMBER

CLIENT DOCUMENT NUMBER

Client Document Number

www.nov.com

REFERENCE DESCRIPTION

DISCIPLINE This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

DOCUMENT NUMBER

REV

D60EGA72-PIB-003

01

D60EGA72-PIB-003 Rev / 01 P a g e | 2 of 4 REVISION HISTORY

01 Rev

02/Dec/2015 Initial Release Date Reason for issue

CHANGE DESCRIPTION Rev 01

Description of Change Initial Release

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CP Prepared

JTM Checked

JD Approved

D60EGA72-PIB-003 Rev / 01 P a g e | 3 of 4

Assemblies Affected:              

M60EGA72-ACTPSL01 M60EGA72-ACTPSR01 M60EGA72-ACTSSL01 M60EGA72-ACTSSR01 M60EGA72-ACTPSL02 M60EGA72-ACTPSR02 M60EGA72-ACTSSL02 M60EGA72-ACTSSR02 M60EGA72-ACTSSL03 M60EGA72-ACTSSR03 M60EGA72-SKPS01M M60EGA72-SKPS02M M60EGA72-SKSS01M M60EGA72-SKSS02M

Findings: During testing and operations, the original Bonnet seal (7813-J377) was observed to be wearing prematurely. In intermittent cases this caused the seal to fail. This was found to have occurred due to the extrusion gap between the Bonnet and Body. Action: Effective immediately, All EGA72 BOPs are to replace the old Bonnet seals 7813-J377 and replace them with P601013447. Also, the torque requirements for the Bonnet Bolts (M601011192B) and the Cap Nuts (M601011191B) have been changed to 1000-1100 ft.lbs. Please contact TOT Sales for assistance on ordering new Seal P601013447.

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D60EGA72-PIB-003 Rev / 01 P a g e | 4 of 4

Seal 7813-J377 superseded with Seal P601013447.

Proper orientation of Seal P601013447

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PRODUCT SERVICE BULLETIN

PSBL-SLIP RAM PIN RETAINER Notice to customers using slip rams on BOPs with retainer pins.

RIG/PLANT

ADDITIONAL CODE

SDRL CODE

TOTAL PGS

REMARKS REFERENCE MAIN TAG NUMBER

CLIENT PO NUMBER

CLIENT DOCUMENT NUMBER

Client Document Number

www.nov.com

REFERENCE DESCRIPTION

DISCIPLINE This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

DOCUMENT NUMBER

REV

D601013499-PIB-001

04

D601013499-PIB-001 Rev / 04 P a g e | 2 of 7 REVISION HISTORY 04

06/Mar/2017

Revision - 2300

CP

MD

JD

03

26/May/2016

Revision

CP

MD

JD

02

13/May/2016

Revision

CP

MD

JD

CP Prepared

MD Checked

JD Approved

01 Rev

18/Jan/2016 Initial Release Date Reason for issue

CHANGE DESCRIPTION Rev 01 02 03 04

Description of Change Initial Release Add Plug Info Revise Pictures to add PPE. New Pin M601013961 and Installation note

www.nov.com

D601013499-PIB-001 Rev / 04 P a g e | 3 of 7

Scope This document serves to notify TOT customers of an incident involving a slip insert dropped downhole due to a retainer pin falling out during installation. Incident Texas Oil Tools was notified that a slip was dropped downhole during a job using an ES56 Quad BOP. Investigation determined the pin retainer was not present during operation which allowed the slip to dislodge from the ram body.

It is imperative to ensure the retainer pin is installed correctly into the ram body and is present before the ram goes into the BOP. It is possible for the pin to fall out of the ram body when rolled to its side or upside-down.

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D601013499-PIB-001 Rev / 04 P a g e | 4 of 7

Assembly 1.

Install Slip Insert into ram body with the angled guide on the same side as the through hole on the ram body as shown.

2.

Install Retainer Pin into Ram Body through the clearence fit hole. Note the retainer pin is visible and can be checked for proper installation. Applying red grease (Similar to Cheveron Ultimate Duty EPNLGI2) to the retainer pin during installation can help prevent it from falling out during transportation.

3.

When installing the ram assembly into the actuator, double check that the retainer pin is present. www.nov.com

D601013499-PIB-001 Rev / 04 P a g e | 5 of 7

Action: Installation of plug P601013710 secures the retainer pin in the ram body. For installation on 3.06”and 4.06” Rams, use new pin M601013961(shorter version of 8041-0143). Note: Using the old pin with the plug will create interference when installing ram into BOP. Plug Installation Ensure retainer pin has been installed into the ram body.

www.nov.com

D601013499-PIB-001 Rev / 04 P a g e | 6 of 7

Install plug into retainer pin bore in ram body. Using a dowel or flat end punch close to the diameter of the plug, drive the plug down into bore with a small hammer.

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D601013499-PIB-001 Rev / 04 P a g e | 7 of 7

Plug Removal From the opposite side of the ram body, using a dowel or flat end punch, drive the retainer pin and plug out of the bore with a small hammer.

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D601013499-PIB-001 Rev / 04 P a g e | 8 of 7

Incorrect Pin for 3.06 & 4.06 BOP Rams

Correct Pin for 3.06 & 4.06 BOP Rams

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PRODUCT SERVICE BULLETIN

PSBL-DSO6 RR S/W INSTALLATION OF TUBING GUIDES

AFFECTED ASSEMBLIES: DSKR-UW**AL DSKR-UA**AL

RIG/PLANT

ADDITIONAL CODE

SDRL CODE

TOTAL PGS

REMARKS REFERENCE MAIN TAG NUMBER

CLIENT PO NUMBER

CLIENT DOCUMENT NUMBER

Client Document Number

www.nov.com

REFERENCE DESCRIPTION

DISCIPLINE This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

DOCUMENT NUMBER

REV

DSO6-1469-PIB-001

02

DSO6-1469-PIB-001 Rev / 02 P a g e | 2 of 6 REVISION HISTORY 02 01 Rev

13/May/2016

Revision

02/Feb/2016 Initial Release Date Reason for issue

CHANGE DESCRIPTION Rev 01 02

Description of Change Initial Release Add tubing guides/bushing photo pages correct/incorrect

www.nov.com

CP

MD

JD

CP Prepared

JTM Checked

MD Approved

DSO6-1469-PIB-001 Rev / 02 P a g e | 3 of 6

Assemblies Affected:  DSKR-UW**AL  DSKR-UA**AL ** Indicates Line Size, reference chart: ** 35 37 41 44 51

SIZE 1.00” 1.25” 1.50” 1.75” 2.00”

Findings: It has been reported to Texas Oil Tools that the tubing guides for the DSO6 Sidewinder Stripper Packer were installed incorrectly in field operations. The guides on these rams are intended to maneuver Coiled tubing to the center of the sized bushings. Installing the Tubing guides incorrectly will result in damage to the equipment.

Tubing Guides installed properly

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DSO6-1469-PIB-001 Rev / 02 P a g e | 4 of 6

Tubing Guides installed incorrectly

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DSO6-1469-PIB-001 Rev / 02 P a g e | 5 of 6

Action New design of tubing guides M601013521-** & bushings M601013522-** prevents incorrect orientation of the guide. Note: the wrong sizes can still be installed, make sure to match the correct tubing guide to bushing. Line sizes are stamped on parts, ensure that the tubing guide and bushing are a matched pair.

Correct Matched Pair for 1.25” CT www.nov.com

DSO6-1469-PIB-001 Rev / 02 P a g e | 6 of 6

INCORRECT PAIRS

Incorrect Pair; 2.00” Tubing Guide w/ 1.25” Bushing

Incorrect Pair; 1.25” Tubing Guide w/ 2.00” Bushing

www.nov.com

PRODUCT SERVICE BULLETIN

PSBL-HYDRACONN LOCK DOGS 5.12” JU56 HYDRACONN LOCK DOGS 9705-2022

RIG/PLANT

ADDITIONAL CODE

SDRL CODE

TOTAL PGS

REMARKS REFERENCE MAIN TAG NUMBER

CLIENT PO NUMBER

CLIENT DOCUMENT NUMBER

Client Document Number

www.nov.com

REFERENCE DESCRIPTION

DISCIPLINE This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

DOCUMENT NUMBER

REV

9705-2022-PIB-001

01

9705-2022-PIB-001 Rev / 01 P a g e | 2 of 4 REVISION HISTORY

01 Rev

03/Mar/2016 Initial Release Date Reason for issue

CHANGE DESCRIPTION Rev 01

Description of Change Initial Release

www.nov.com

CP Prepared

MD Checked

JD Approved

9705-2022-PIB-001 Rev / 01 P a g e | 3 of 4

Scope The purpose of this document is to bring awareness to TOT customers the identification of a manufacturing defect in the 5.12” JU56 Hydraconn lock dogs. The following serial numbers were affected by the defective parts: 123-38588 151-47061 Order 459514 Issue While testing a customer JU56 Hydraconn at the Texas Oil Tools facility in Conroe, it was identified that the cause of seal failures linked to an excessive extrusion gap. When the assembly was inspected, the lock dogs (9705-2022) measured out of specification. The inside length was .100” over high tolerance, reducing the effective grip between the bottom sub and the stinger.

The root cause was a mistake due to a re-write of a CNC program by a vendor May, 2014 that has since been corrected. All parts manufactured since 8-12-15 are correct. Testing in-house saw reduced seal life expectancy due to the defect. No mechanical failures occurred in the connection itself during testing. The unit was shell tested to 22,500psi four (4) times and went through multiple rounds of 15,000psi testing during root cause analysis with no failures of the connecting mechanism.

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9705-2022-PIB-001 Rev / 01 P a g e | 4 of 4

Action TOT recommends customers with the following serial numbers to send in the affected JU56 assembly to a service center for immediate replacement. New lock dogs will be available to replace the defective parts. Call TOT Sales Department. 123-38588 151-47061 Order 459514

www.nov.com

PRODUCT SERVICE BULLETIN

PSBL-SAFETYHEAD SIDEPACKER Product Service Bulletin for Safetyhead Side Packer Seals 2002-1481P 2002-1482P 2002-1483P 2002-1484P

RIG/PLANT

ADDITIONAL CODE

SDRL CODE

TOTAL PGS

REMARKS REFERENCE MAIN TAG NUMBER

CLIENT PO NUMBER

CLIENT DOCUMENT NUMBER

Client Document Number

www.nov.com

REFERENCE DESCRIPTION

DISCIPLINE This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

DOCUMENT NUMBER

REV

D601013667-PIB-001

01

D601013667-PIB-001 Rev / 01 P a g e | 2 of 4 REVISION HISTORY

01 Rev

20/Apr/2016 Date

Initial Release Reason for issue

CHANGE DESCRIPTION Rev 01

Description of Change Initial Release

www.nov.com

CP Prepared

CN Checked

JD Approved

D601013667-PIB-001 Rev / 01 P a g e | 3 of 4 Scope Texas Oil Tools has identified a manufacturing issue with the Safetyhead’s side packer seals produced out of UTEX Mold #5601; seals produced from this mold, prior to 13-Apr-16, were found to be undersized and prone to wellbore leakage. Part Numbers Affected 2002-1481P 2002-1482P 2002-1483P 2002-1484P Summary Texas Oil Tools observed several leakages whilst performing gas wellbore pressure testing on the Safetyhead ET BOP. Upon inspection of the leaking side packers it was discovered that the height dimension was measuring in the range of 2.535-2.565 resulting in a loose fit within the ram body.

The undersized variance in height of the side packer leads to a potential for wellbore leakage; however, some side packers from this mold have been found to repeatedly seal without issue. Required Actions 

Full inventory of Side Packers should be Inspected to determine mold origin o All Side Packers Molded before April 2014 are from the Original Mold #3145 and are fit for service o All Side Packers Molded after April 2014 shall be visually inspected (see Side Packer Mold Identification)  All Original Mold Side Packers are fit for service  All New Mold Side Packers must either be:  Returned to TOT for Replacement  OR Pass a Hydrostatic (or Gas, if possible) Working Pressure Test prior to deployment

All Side Packers that have already passed Hydrostatic and/or Gas Working Pressure Tests are fit for service. www.nov.com

D601013667-PIB-001 Rev / 01 P a g e | 4 of 4 Side Packer Mold Identification TOT have initiated a full study with the seal vendor to identify all orders that were produced utilizing the New Mold. In the meantime visual indicators may be used to identify Original Mold Side Packers. All Original Mold Side Packers will show parting lines within the elastomer on the top and bottom faces, as are boxed in the images below. TOT has initiated a full study with the seal vendor to identify all orders that were produced utilizing the New Mold. All Side Packers Molded before April 2014 were produced out of the Original Mold and are fit for service. Side Packers molded after April 2014 must currently be identified via visual indicators. All Original Mold Side Packers will show parting lines within the elastomer on the top and bottom faces of the packer, as are boxed in the images below. All New Mold Side Packers will not show these parting lines.

www.nov.com

PRODUCT SERVICE BULLETIN

PSBL-JK46 CONNECTOR Product Service Bulletin for JK46 Quick Disconnect Connectors JK46-1GL6X M60JK46-146WL M60JK46-1A1WL M60JK46-1A2WL M60JK46-1A3AL M60JK46-1A4AL M60JK46-1F40L

RIG/PLANT

ADDITIONAL CODE

SDRL CODE

TOTAL PGS

REMARKS REFERENCE MAIN TAG NUMBER

CLIENT PO NUMBER

CLIENT DOCUMENT NUMBER

Client Document Number

www.nov.com

REFERENCE DESCRIPTION

DISCIPLINE This document contains proprietary and confidential information which belongs to National-Oilwell Varco, L.P., its affiliates or subsidiaries (all collectively referred to hereinafter as "NOV"). It is loaned for limited purposes only and remains the property of NOV. Reproduction, in whole or in part, or use of this design or distribution of this information to others is not permitted without the express written consent of NOV. This document is to be returned to NOV upon request and in any event upon completion of the use for which it was loaned. This document and the information contained and represented herein is the copyrighted property of NOV.  National Oilwell Varco

TEXAS OIL TOOLS 3770 Pollok Dr. Conroe, TX 77303 Phone 936-777-6100 Fax 936-756-8102

DOCUMENT NUMBER

REV

D601013702-PIB-001

02

D601013702-PIB-001 Rev / 02 P a g e | 2 of 4 REVISION HISTORY 02 01 Rev

11/May/2016

Revision

11/May/2016 Initial Release Date Reason for issue

CP

JTM

JD

CP Prepared

JTM Checked

JD Approved

CHANGE DESCRIPTION Rev 01 02

Description of Change Initial Release Correct Assemblies Affected 1A3WL & 1A4WL to 1A3AL & 1A4AL

www.nov.com

D601013702-PIB-001 Rev / 02 P a g e | 3 of 3

Scope It was reported to Texas Oil Tools that a JK46 Quick connector had become unlatched during pressure testing. Affected Assemblies: JK46-1GL6X M60JK46-146WL M60JK46-1A1WL M60JK46-1A2WL M60JK46-1A3AL M60JK46-1A4AL M60JK46-1F40L Summary It was determined that the indicator for the Quick Latch was installed wrong. This resulted in a false reading that the Connector was fully closed. When pressure was applied, the two parts of the equipment separated. Action After review of the equipment, TOT will move forward with modifications to all new JK46 Quick Connect. The old indicator will be removed and four new position indictors will be added. The new parts will not be easily installed wrong, and will have redundant backups. See images below. TOT recommends modifying existing connectors, but it is not mandatory. Contact TOT sales for needed parts: M601013570 Indicator Rod – four (4) pieces M601013571 Indicator Housing – four (4) pieces

www.nov.com

Product Information Bulletin Date: 04/Aug/2016 Bulletin Number: ES56-ACT2-PIB-001

Revision: 02

ES56 5.12” 15K SLIP ACTUATOR Subject:

New Spacer Bushing for ES54 Slip Actuator

Product Model:

ES54 5.12” 10K Quad Blow Out Preventer

Effectivity:

ES54 Slip Ram Assemblies

Affected Assemblies:

All ES56-ACT2 Actuators Utilizing Slip Ram Assemblies See serial number list in this document.

Objective Texas Oil Tools has identified an issue with overstroke in ES54 slip actuators. Issue The scenario is present when ES56-ACT2 actuators are utilized as slip actuators. One ram typically closes first, which will create an off-center ram closure. This effect is present in most ram assemblies, but has been noticed to be larger than intended with the ES56-ACT2 actuator using slip ram assemblies. The tubing can be at risk of damage if the slips engage fully off-center followed by activating the pipe rams. Solution To prevent the possibility of this occurrence, a stroke limiting spacer (M601012606) can be installed into the ES56-ACT2 actuator.

1

Product Information Bulletin

As a product improvement of the ES54 quad, the ACT2 actuator will be removed in all slip applications replaced by M60ES56-ACT18. Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center, or TOT sales department. Texas Oil Tools – US

Tony Whitfield - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 PH# 936 777 6100

NOV Elmar Middle East B-60, Oilfields Supply Center R/A No.9, Jebel Ali, Dubai United Arab Emirates PH# 971 8100 212

Stuart Roberts - UK

Choon Fei Wong- SINGAPORE

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom PH# 44 1493 651801 FAX# 44 1493 651805

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721 Singapore PH# 65 65460928 FAX# 65 65460927

2

Product Information Bulletin

Mark Palka- CANADA Pressure Control Group Manager Rig Solutions – Service and Repair (780)991-9850

Serial Numbers 053-21823

114-34830

124-39452

133-42888

073-25090

121-35651

131-40107

133-43137

073-25450

122-36559

131-40126

133-43161

091-29797

122-37081

131-40468

133-43300

091-29834

122-37107

131-40468

133-43452

092-30045

122-37112

131-40615

141-43927

094-30808

122-37173

131-40671

142-44716

101-31286

123-37514

132-40954

142-44740

103-31749

123-37613

132-40962

142-44874

103-31760

123-37623

132-41107

142-44931

103-31868

123-37728

132-41121

142-45027

103-31930

123-37766

132-41251

142-45182

103-32029

123-38020

132-41419

142-45203

104-32301

123-38055

132-41538

142-45248

104-32491

123-38055

132-41703

152-48001

111-32874

124-38891

132-41718

152-48037

113-33905

124-39200

133-42637

152-48040

3

Product Improvement Notification Date: 26, August 2016 Bulletin Number: 1000011781-PIN Revision: 01

STRIPPER PACKER BRASS BUSHING Subject:

Decrease Bushing Friction

Product Model:

Texas Oil Tools Stripper Packers

Effectivity:

Stripper Packer Bushings

Affected Assemblies:

All Models Texas Oil Tools Stripper Packers

Objective Decrease stripper packer brass friction by increasing bushing ID. Description Texas Oil Tools has been machining standard coiled tubing stripper brass inside diameter to account for varying coiled tubing conditions while maintaining the interface between the brass and stripper packer. Solution TOT will be supplying new stripper brass per the attached chart. Current stripper brass located in our main warehouse and satellite warehouses will be supplied as machined on the shelf. Stripper brass per the chart below will be shipped upon depletion of current inventory.

Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center, or TOT sales department. 1

Product Improvement Bulletin

Page 2 of 3

Texas Oil Tools – US

Tony Whitfield - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 PH# 936 777 6100

NOV Elmar Middle East B-60, Oilfields Supply Center R/A No.9, Jebel Ali, Dubai United Arab Emirates PH# 971 8100 212

Stuart Roberts - UK

Choon Fei Wong- SINGAPORE

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom PH# 44 1493 651801 FAX# 44 1493 651805

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721 Singapore PH# 65 65460928 FAX# 65 65460927

Mark Palka- CANADA Pressure Control Group Manager Rig Solutions – Service and Repair (780)991-9850

Product improvement bulletins are intended to inform the customer of available upgrades to existing equipment. To view other product bulletins please sign in to your MYNOV account at https://portal.mynov.com

Product Improvement Bulletin

Page 3 of 3

Product Improvement Notification Date: 11, September 2019 Bulletin Number: 1000011840-PIN

Revision: 05

BOP STEM SEAL SST ENERGIZER

Subject:

BOP Stem Seal Stainless Steel Energizer

Product Model:

Texas Oil Tools BOPs

Effectivity:

Stem Seal Energizer

Affected Assemblies:

All Models Texas Oil Tools BOPs

Objective Improve stem seal life during Rapid Gas Decompression Description Texas Oil Tools has seen limited situations during RGD where standard polypak elastomer energizers become dislodged from the polypak. While this does not directly affect sealing, we feel that this would give a false indication of seal failure. Solution Texas Oil Tools is offering polypaks that contain a SST spring energizer that can replace existing lead polypak BOP stem seals. Current polypaks with elastomer energizers are still available and will continue to be used behind the SST energizer or as is currently used. Implementation of the SST energizer will improve the after effects of RGD on the energizer. Drawing on page 3 illustrates the preferred seal stack when installing the new SST energized polypak and gives a list of available part numbers.

Page 1 of 4

Product Improvement Notification

SST Stem Seal Energizer

Available Part Numbers w/ Spring Energizer 7821-1009P 7821-1379P P607821-1622P 7821-1752P 7821-2129P 7821-2252P 7821-2002P 7817-2003P 1000011840-PIN/Rev 05

Page 2 of 4

Product Improvement Notification

Product Improvement Notifications are intended to inform the customer of available upgrades to existing equipment. To view other product bulletins, please sign in to your MYNOV account at https://portal.mynov.com.

Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center if you have any questions regarding this bulletin.

UNITED STATES: TOT Texas Oil Tools 3770 Pollok Dr. Conroe, TX 77303 T: 936 777 6100

DUBAI: ISE Aftermarket ISE Aftermarket P.O. Box 61490, Plot S 50601 Jebel Ali Free Zone | Dubai, UAE T: +971.4.8016225

UNITED KINGDOM: Hydra Rig Hydra Rig, Excalibur Road Beacon Park Gorleston Great Yarmouth Norfolk England, United Kingdom T: 44 1493 666200

SINGAPORE: NOV Elmar NOV Elmar PTE LTD #129 No. 7 Loyang Way 508721 Singapore T: 65 65460928

CANADA: PCG Pressure Control Group Rig Solutions – Service and Repair T: 780 991 9850

SAUDI ARABIA: ISE Aftermarket Road 120/73, Dammam 2nd Industrial City Eastern Province, KSA T: +966 13 8353061 Ext: 601

1000011840-PIN/Rev 05

Page 3 of 4

Product Improvement Notification

Revision History Revision 01 02 03 04 05

Date 2016-10-20 2016-10-21 2018-06-18 2019-04-09 2019-09-11

1000011840-PIN/Rev 05

Change Description Initial Release Change Dubai Contact 7821-1622P to P607821-1622P Add 7821-2002P; Current Formatting Correct spelling of Energizer on drawing; update address for Hydra Rig

Page 4 of 4

Product Information Bulletin Date: November 3, 2016 Bulletin Number: 1000011858-PIB Revision: 01 ES44, ES46 BOPs and DD46 Snubber

Subject:

Required Replacement of Guide Rods 9905-2424 and 9905-2936

Product Model:

ES46 and ES44 Series Blow Out Preventers and DD46 Snubbers

Effectivity:

ES46 and ES44 shear/seal and pipe/slip actuators. DD46 shear/seal actuators

Affected Assemblies:

See attached chart of affected order numbers and part numbers

Objective Texas Oil Tools has identified an issue with the material used for two batches of guide rods. Issue Guide rods made from carbon steel are exposed to well bore fluids including H2S, industry standard NACE MR0175, specifies metallurgical hardness levels for H2S exposed materials as used in our guide rods. Texas Oil Tools has identified a very limited number of orders where guide rod hardness exceeding NACE max limit of 22Rc by 5 points were shipped to some customers. Solution If an affected piece of equipment as listed below is currently in operation or about to be in service guide rods need to be replaced when the job is completed. Guide rods in equipment listed below can see a limited amount of exposure time to wellbore fluids of 5 weeks. Guide rods identified as incorrect must be replaced with new rods supplied by Texas Oil Tools at the earliest possible time to avoid exceeding the limited exposure time allowed.

1

Product Information Bulletin

Affected Assemblies w/ Order numbers: 9905-2424 - GUIDE ROD PIPE/SLIP COMBI Assembly Sales Order M60ES44-U449XL 464306 M60ES44-N449X-QC 463448 M60ES44-N449X-QC 463453 M60ES44-N449X-QC 463449 9905-2424, SPARE 464787 9905-2424, SPARE 464680/465039 9905-2424, SPARE 464621 9905-2936 - GUIDE SHEAR/SEAL 4.06 15M Assembly Sales Order 9905-2936, SPARE 464680 9905-2936, SPARE 465041 9905-2936, SPARE 467487 9905-2936, SPARE 465225 M60DD44-N443ZX 463673 M60DD44-N443ZX 463672 M60DD46-S469Z 464400 9905-2936, SPARE 465229

2

Product Information Bulletin

Please contact your local National Oilwell Varco (NOV) Service Center, or TOT sales department.

Texas Oil Tools – US

Marvin Manosca - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 PH# 936 777 6100

NOV Elmar Middle East B-60, Oilfields Supply Center R/A No.9, Jebel Ali, Dubai United Arab Emirates PH# 971 8100 212

Stuart Roberts - UK

Choon Fei Wong- SINGAPORE

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom PH# 44 1493 651801 FAX# 44 1493 651805

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721 Singapore PH# 65 65460928 FAX# 65 65460927

Mark Palka- CANADA Pressure Control Group Manager Rig Solutions – Service and Repair 780 991 9850

To view other product bulletins please sign in to your MYNOV account at https://portal.mynov.com

3

Product Information Bulletin Date: 13 March 2017 Bulletin Number: 1000011981-PIB

Revision: 01

STRIPPER PACKER RELIEF VALVE

Subject:

Stripper Packer Relief Valve

Product Model:

DSA4, DSA6, DSH4, DSH6, DSQ4, DSU4, DSU6, DSV4, DSV6, DSW4, DSW6

Effectivity:

Texas Oil Tools Stripper Packers

Affected Assemblies:

All Assemblies

Objective TOT is notifying all customers of an incident involving a DSV6 Stripper packer resulting in a near-miss failure. Issue The operator was applying pressure to the close port of the stripper packer window when the Socket Head Cap Screws holding the middle body to the lower body failed, resulting in a hydraulic leak through the O-Ring seal. This was the result of not having a return connection on the open port to vent the hydraulic fluid back when closing the window. Without having a proper return connection, the large surface area difference between the open and close side of the window creates a pressure booster. The smaller area, depending on the stripper packer model, could have over a five (5) times pressure boost, far exceeding the safe hydraulic working pressure of the unit.

1

Product Information Bulletin

𝑃1 ×𝐴1 = 𝑃2 ×𝐴2 𝑃2 =

𝑃2 =

𝑃1 ×𝐴1 𝐴2

3000𝑝𝑠𝑖×18.11𝑖𝑛2 = 15,390𝑝𝑠𝑖 3.53𝑖𝑛2

Solution It is imperative operators are trained and knowledgeable of trapped pressure areas in hydraulic equipment. Return connections must be connected to the equipment. In the instance a perceived risk of blockage downstream in the connection, a relief valve can be installed on the unit at the open window port as shown below. The kit M60DSU4-RP01 can be ordered from TOT.

Subject: 1000011981-PIB / 01

2

Product Information Bulletin

M60DSU4-RP01 PRESSURE RELIEF VALVE RETRO-FIT KIT ITEM 1 2 3 4 5

PART NUMBER QTY DESCRIPTION P601000929 1 PRESSURE RELIEF VALVE; DSU RETRO M601001807B 1 ADAPTER 9/16 AE, #5 SAE, .25 NPT 7934-9032 1 COLLAR .562 HP SOG 7934-9092R 1 GLAND; AE9/16HP, SOG 7934-9755B 1 ADAPTER #5 SAE MALE; 9/16 AE HP

NOTE: Pressure relief valve to be installed on “Open Window” port.

1000011981-PIB / 01

3

Product Information Bulletin

Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center, or TOT sales department.

Texas Oil Tools – US

Marvin Manosca - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 PH# 936 777 6100

NOV Elmar Middle East B-60, Oilfields Supply Center R/A No.9, Jebel Ali, Dubai United Arab Emirates PH# 971 8100 212

Stuart Roberts - UK

Choon Fei Wong- SINGAPORE

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom PH# 44 1493 651801 FAX# 44 1493 651805

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721 Singapore PH# 65 65460928 FAX# 65 65460927

Mark Palka- CANADA Pressure Control Group Manager Rig Solutions – Service and Repair 780 991 9850

1000011981-PIB / 01

4

Product Information Bulletin

Revision History NOTE to author of bulletin: Do not split the table across pages.

Revision

Date (00 Month 0000)

01

13/Mar/2017

1000011981-PIB / 01

Change Description (vertical line to the side of a paragraph indicates a change) Initial Release

5

Product Information Bulletin Date: 12 July, 2017 Bulletin Number: 1000012190-PIB

Revision: 02

PISTON SEAL EH MODEL BOP

Subject:

EH54 Piston Seal

Product Model:

EH54

Effectivity:

Texas Oil Tools EH54 Blowout Preventer

Affected Assemblies:

All Assemblies

Objective TOT is notifying all customers of a switch to T-Seals in dynamic piston applications. Issue A few incidents of spiral failure in O-Ring piston seals in the EH54 model due to internal cylinder surface coating finishes have prompted a product improvement. O-Rings have been used for many years successfully in TOT piston designs, but do have more sensitivity to imperfect conditions within the cylinder. From now on, new BOP units and seal kits will come with a T-Seal for the piston in place of the O-Ring. The T-Seal has been used on the ES model BOP reliably and will alleviate issues concerning O-rings in dynamic applications.

1

Product Information Bulletin

New Seals Size Old: O-Ring New: T-Seal

1000012190-PIB / 02

8.5

7813-3445

7951-1445

8.5

7813-A445

7951-A445

7.0

7813-3439

7951-1439

7.0

7813-A439

7951-A439

5.0

7813-3425

7951-1425X

5.0

7813-A425

7951-A425

2

Product Information Bulletin

Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center, or TOT sales department. Texas Oil Tools – US

Marvin Manosca - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 PH# 936 777 6100

NOV Elmar Middle East B-60, Oilfields Supply Center R/A No.9, Jebel Ali, Dubai United Arab Emirates PH# 971 8100 212

Stuart Roberts - UK

Choon Fei Wong- SINGAPORE

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom PH# 44 1493 651801 FAX# 44 1493 651805

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721 Singapore PH# 65 65460928 FAX# 65 65460927

Mark Palka- CANADA Pressure Control Group Manager Rig Solutions – Service and Repair 780 991 9850

1000012190-PIB / 02

3

Product Information Bulletin

Revision History

Revision

Date

01

11/July/2017

Initial Release

02

12/July/2017

Revision – T-Seal 7951-A425 from A439

1000012190-PIB / 02

Change Description

4

Product Improvement Notification Date: 10 December 2019 Bulletin Number: 1000012215-PIN Revision: 03

EIA74 Series BOP

Subject:

EIA74 Clevis and Locking Wedge Improvement

Product Model:

EIA74 Series BOP

Effectivity:

All EIA74 Series BOP Actuators

Affected Assemblies:

All EIA74 Series BOP Actuators

Objective Outline EIA74 product Bill of Material modification to reduce hydraulic pressure required to open actuator set after closing and locking. Issue Field has reported actuators that are unable to function Open utilizing working hydraulic pressure. Investigation Customer reported sticking wedge during attempts to function actuators Open. After closing an actuator set, the actuator was unable to open utilizing full hydraulic working pressure. TOT has performed a series of cyclical loading tests using the extended clevis M1N1000515 and bushing M1N1000886. The test included 200 cycles, hydraulically closed with 5,000 psi and 10,000 psi wellbore applied. [Reference M601001599-REP-003 & M601001599-REP-004 for testing details]

1000012215-PIN / 03

Page 1 of 5

Product Improvement Notification

The Clevis geometry has been lengthened in order to limit the stroke of the locking wedge.

Image 1 - Short Clevis Geometry (M601009949B)

Image 2 - Extended Clevis (M1N1000515) with Bushing (M1N1000886)

1000012215-PIN / 03

Page 2 of 5

Product Improvement Notification

The locking wedge has been updated to remove the external surface xylan coating. Wedges should also have the chamfered geometry as seen in Image 4 below.

Image 3 - Original Wedge Geometry

Image 5 – Xylan Coated Wedge

1000012215-PIN / 03

Image 4 – Updated Chamfered Wedge Geometry

Image 6 – Non Coated Wedge

Page 3 of 5

Product Improvement Notification

All EIA74 actuators should have Chamfered Wedges (Ref. Image 4) and shall be Non-coated (Ref. Image 6); wedges were updated to include the chamfer 03-Sept-15. If chamfered wedges are not currently installed, contact TOT Sales ([email protected]) to arrange for updated parts. If xylan coated chamfered wedges are installed, TOT recommends that the xylan coating be removed manually, with a low abrasion flapper wheel, or via glass bead blast or similar. Contact TOT Sales ([email protected]) with additional inquiries. All EIA74 actuators should have all short Clevises replaced, 4 per actuator set. If short clevises are currently installed, contact TOT Sales ([email protected]) to arrange for updated parts.

1000012215-PIN / 03

Page 4 of 5

Product Improvement Notification

Revision History NOTE to author of bulletin: Do not split the table across pages. Revision 01

Date 00 Month 0000 11 August 2017

02

10 December 2019

03

2020-05-12

1000012215-PIN / 03

Change Description (vertical line to the side of a paragraph indicates a change) Initial Release Added extended clevis and bushing part numbers. Updated image 2 to show clevis and bushing overall length. Flip images for figures 5 & 6

Page 5 of 5

Product Information Bulletin Date: 15 August 2017 Bulletin Number: 1000011935-PIB Revision: 02

EIA Series BOP Subject:

Corrosion clean up and Maintenance/Preservation in EIA Wedge lock bore

Product Model:

EIA Series BOP

Effectivity:

All EIA Series BOP Actuators

Affected Assemblies:

All EIA Series BOP Actuators

Objective The TOT recommended method to remove corrosion from an EIA Wedge lock bore and provide subsequent maintenance/preservation procedures. Issue Field has reported actuators that are unable to function Open utilizing working hydraulic pressure. The EIA Wedge lock bores were found to have a corrosive build up similar to that seen in Image 1 below. Investigation Customer reported sticking wedge during attempts to function actuators Open. After closing an actuator set, the actuator was unable to open utilizing full hydraulic working pressure. Initially, TOT worked to address the issue by improving upon the design of the locking wedge. The wedge geometry was updated to remove material on the back side of the wedge (compare Image 1 to Image 2); additionally, an extended length clevis has been installed to reduce wedge stroke, reference 1000012215PIN for details.

1

Product Information Bulletin

Image 1 – Updated Wedge Geometry

Image 2 - Original Wedge Geometry

2

Product Information Bulletin All EIA74 actuators should be outfitted per 1000012215-PIN Although the updated wedge/clevis combination has been shown to reduce the hydraulic pressure required to unlock an actuator set, the increased normal forces acting upon the wedge, due to corrosion build up, is a contributing factor to increased opening pressures over time. Image 5, below, is an example of a wedge bore that has been in outdoor storage for a prolonged period and has accumulated a large amount of scale build up.

Image 3 – Heavy Scale Build up (Exposed for over 1 year)

3

Product Information Bulletin Solution

1. Cleaning Operations A multistage cleaning process may be applied in order to bring a corroded or sticking wedgebore into operational condition: Equipment required: 1) PPE i) Gloves ii) Safety Glasses iii) Face Sheild iv) Hearing Protection v) Long sleeve shirt (recommended) vi) Additional PPE as required by location/company safe work requirements 2) Extended Die Grinder (ref. Image 7) 3) Knot Style Wire End Brush (ref. Image 6) i) 1-1/8” w/ 0.014 SS wire (or equivalent) 4) 80 Grit Flapper Wheel (ref. image 8) 5) 120 Grit Flapper Wheel (ref. image 8) 6) Scotch-Brite Combi-S Wheel (ref. Image 9) 7) Cleaner / Degreaser Solvent (ref. Image 10) i) USS 32 Safety Solvent (or equivalent) 8) Lint free cleaning cloth 1.1. Remove wedge positional indicators per Tech Manual instructions 1.2. Cleaning Stage One – Heavy Scale Build up NOTE: If wedge bore does not have Heavy Scale Build up, proceed to Section 1.3

1.2.1.

Install a Knot style wire end brush (ref. Image 6) on an Extended Die Grinder (ref. Image 7)

Image 4 - 1-1/8" Knot Style Wire End Brush

4

Product Information Bulletin

Image 5 - Extended Die Grinder

1.2.2.Remove the scale that has built up in the wedgebore cavity. NOTE: Take special care to avoid contact with the Main Piston Tailrod

Image 6 - Tailrod - Wedgebore Interface

5

Product Information Bulletin 1.3. Cleaning Stage Two – Light Scale Build Up

1.3.1. Install 80 Grit Flapper Wheel (ref. Image 9) on Extended Die Grinder (ref. Image 7)

Image 7 - Flapper Wheel

1.3.2. Remove the scale that has built up in the wedgebore cavity. NOTE: Take special care to avoid contact with the Main Piston Tailrod (ref. Image 8) NOTE: If unable to remove scale build up with Flapper Wheel revert to Section 1.2

1.3.3. Install 120 Grit Flapper Wheel (ref. Image 9) on Extended Die Grinder (ref. Image 7) 1.3.4. Remove the scale that has built up in the wedgebore cavity. NOTE: Take special care to avoid contact with the Main Piston Tailrod (ref. Image 8)

6

Product Information Bulletin 1.4. Cleaning Stage Three – Polish

1.4.1. Install Scotch-Brite Combi-S wheel (ref. Image 10) on Extended Die Grinder (ref. Image 7)

Image 8 - Scotch-Brite Combi-S

1.4.2. Polish wedgebore cavity to finish equivalent to Image 12.

1.5. Cleaning Stage Four – Cleanup

1.5.1. Using a Cleaner/Degreaser (ref. Image 11, or equivalent) and a lint free cloth clear the wedgebore of all debris/particulates NOTE: Ensure area is well ventilated when using spray cleaner/degreaser

Image 9 - Cleaning Solvent

7

Product Information Bulletin 1.6. Acceptable Results

1.6.1. All scale build up shall be removed; part should be polished to a smooth finish. 1.6.1.1. Some pitting may be present after cleanup operations are completed 1.6.2. Inspect wedge bore diameter 1.6.2.1. Wedge bore diameter shall measure Ø2.857-Ø2.870

Image 10 - Acceptable Cleaned Wedgebore

8

Product Information Bulletin 2. Preservation Program 2.1. If system is to be stored for longer than 30 days, the wedge shall be removed, per Tech Manual Instruction, from the actuator and stored externally. 2.2. Apply a thick coating of Ultra-Duty EP NLGI 2 grease, or equivalent, for duration of storage period.

2.3. Prior to any testing or deployment, thouroughly clean bore of grease and inspect for corrosion 2.3.1.If any corrosion is discovered refer to Section 1 to dress the wedge bore. 2.4. Install wedge, per Tech Manual Instruction.

3. Maintenance Program 3.1. Prior to any testing or deployment, wedges shall be removed, per Tech Manual Instruction, and wedge bore inspected for corrosion. 3.1.1.If any corrosion is discovered refer to Section 1 to dress the wedge bore. 3.2. Install wedge, per Tech Manual Instruction.

9

Product Information Bulletin Date: 14/Sept/2017 Bulletin Number: 1000012236-PIB

Revision: 01

JU56 CONNECTOR SAFETY LATCH

Subject:

JU56 Safety Latches opening while not connected to a hydraulic power source. JU56 Safety Latches getting stuck in the open position requiring manual assistance to close.

Product Model:

All JU56 Connector Safety Latches

Affected Assemblies:

Torsion Spring: 9705-2629; Gland Nut: 9705-2627; Lock Piston: 9705-2628

Objective Texas Oil Tools recommendations for JU56 Connector Safety Latches and upgrades available if experiencing the subject issues referenced. Issue Field report #1: It was reported to Texas Oil Tools that one of the JU56 connector safety latches had opened while not connected to a hydraulic power source. Upon investigation, it was found that the hoses that were attached to the connector were unhooked from the power source, creating a pressure lock. TOT conducted in house testing and found that it is possible for the safety latch to open due to thermal expansion of the hydraulic fluid in the hoses if they are exposed to the sun or other heat sources without being bled. Field report #2: It was reported to Texas Oil Tools that the safety latch on a JU56 was getting stuck in the open position and required manual assistance to close. Upon investigation TOT found that this can intermittently occur due to optional geometry allowed during the manufacturing process on the Lock piston. It was also noted that the O-ring groove in the Gland nut, which the Lock piston travels through, had an abnormally narrow groove increasing seal friction contributing to the lack of movement in the Lock Piston.

1000012236-PIB/Rev01

Page 1 of 3

Product Information Bulletin Solution Texas Oil Tools does not recommend leaving connectors attached to power supply hoses that do not terminate to a hydraulic power source. TOT has up graded the spring on the connector to help minimize the chances of this happening. TOT has removed the optional manufacturing geometry to the Lock piston and increased the width of the O-ring groove on the Gland nut, this should ensure that the safety latch closes on its own. If you are not experiencing these issues it is not necessary to replace the revised parts listed above. All new parts made will be to the latest revisions and will work on all connectors. Ordering and Contact Information Please contact your local National Oilwell Varco (NOV) Service Center, or TOT sales department.

Texas Oil Tools – US

Marvin Manosca - DUBAI

Aaron Wilson – TOT Sales Manager Bill Stalsby – TOT Service Manager 3770 Pollok Dr. Conroe, TX 77303 PH# 936 777 6100

NOV Elmar Middle East B-60, Oilfields Supply Center R/A No.9, Jebel Ali, Dubai United Arab Emirates PH# 971 8100 212

Stuart Roberts - UK

Choon Fei Wong- SINGAPORE

Boundary Road Harfeys Industrial Estate Great Yarmouth Norfolk NR31 OLW England, United Kingdom PH# 44 1493 651801 FAX# 44 1493 651805

NOV ELMAR PTE LTD #129 No. 7 Loyang Way 508721

1000012236-PIB/Rev01

Singapore PH# 65 65460928 FAX# 65 65460927

Page 2 of 3

Product Information Bulletin

Mark Palka- CANADA Pressure Control Group Manager Rig Solutions – Service and Repair 780 991 9850

Revision History Revision 01

Date (00 Month 0000) 14 Sept 2017

Change Description (vertical line to the side of a paragraph indicates a change) Initial Release

02

1000012236-PIB/Rev01

Page 3 of 3

Product Information Bulletin Date: 19 October 2017 Bulletin Number: 1000012281-PIB

Revision: 01

CT CONDITION EVAL HYDRAULIC PSI

Subject:

Coiled Tubing Condition Evaluation, Slip and Pipe/Slip Rams; Anticipated Minimum and Maximum Hydraulic Pressures

Product Model:

All BOP Models Configured Slip or Pipe/Slip

Effectivity:

All BOPs with Slip or Pipe/Slip Rams

Affected Assemblies:

All BOP Assemblies Configured Slip or Pipe/Slip

Objective Recommendation of field testing on slip and pipe/slip rams to evaluate coiled tubing condition prior to field usage for both minimum and maximum anticipated hydraulic pressures. Issue Current field testing involves testing slip and pipe/slip rams to a minimum hydraulic pressure using shop test pumps. The reason for the minimum hydraulic pressure required is to make sure you have enough force, when the effective closing pressure is calculated at MASP (Maximum Anticipated Surface Pressure). It is also necessary to perform the slip tests using the maximum hydraulic pressure, to ensure the combination of the hydraulic force and the load applied do not damage the coiled tubing. The only marking on the coiled tubing should be the indentation of the slip teeth. The larger sizes of BOP’s are designed to hold up to 150,000 lbs. of hang off load, the same hydraulic force applied to the thin walled section of the CT string could damage the coiled tubing. Resolution Texas Oil Tools recommends closing slip or pipe/slip rams using a minimum and maximum hydraulic pressure. If using tapered strings, test needs to be conducted across thin and thick wall sections to validate closing force and coil condition.

1000012281-PIB/01

Page 1 of 2

Product Information Bulletin

Revision 01

Date (00 Month 0000) 19/Oct/2017

Change Description (vertical line to the side of a paragraph indicates a change) Initial Release

02

1000012281-PIB/01

Page 2 of 2

 

  Product Information Bulletin 

 

  Date: 13 November 2017  Bulletin Number: 1000012342‐PIB  

Revision: 03 

EH/EC44 BOP ACTUATOR ROD NUT   

   

 

 

 

Subject: 

 

 

EH44 & EC44 BOP Actuator Rod Nut Evaluation and Possible Replacement   

   

 

Product Model:  

 

 

EH44 & EC44 Quad BOPs 

 

 

Effectivity: 

 

 

All EH44 & EC44 Quad BOPs 

 

 

Affected Assemblies:  

 

 

All EH44 & EC44 Quad BOP Actuator Assemblies 

 

 

 

 

 

 

 

   

 

 

 

Objective  To notify all users of EH44 and EC44 acceptance criteria for rod nut 7805‐1031B.    Issue      TOT was notified that a EH44 BOP actuator lost function and the rams would not open during wellsite  operation.  Upon disassembly it was noticed that the rod nut had failed and separated from the piston  rod preventing the rams from being opened.       

1000012342‐PIB/Rev03 

 Page 1 of 4 

 

Product Information Bulletin                              

 

 

 

Resolution      TOT recommends to check the build date of the actuators or BOP assembly.  If the actuators or BOPs  were built before the year 1991 the rod nut 7805‐1031B revision should be checked immediately.  If the  rod  nut  has  revisions  A  or  B  then  the  material  yield  strength  is  75,000psi  and  should  be  replaced.   Revision C and above are all acceptable with an increased yield strength of 100,000psi.    It  is  also  recommended  to  magnetic  particle  inspect  the  rod  nut  during  inspection  or  recertification  process.      Testing the system to a full open hydraulic pressure of 4,500psi was also a contributing factor to the rod  nut failure.  Test procedures ATEH‐2000, 4000, and 6000 have all been revised to remove this step to  prevent future occurances.        

 

1000012342‐PIB/Rev03 

 

 

 Page 2 of 4 

 

Product Information Bulletin                              

 

 

 

Ordering and Contact Information  Please contact your local National Oilwell Varco (NOV) Service Center. 

 

  Marvin Manosca ‐ DUBAI    NOV Elmar Middle East  B‐60, Oilfields Supply Center 

Texas Oil Tools – US  Aaron Wilson – TOT Sales Manager  Bill Stalsby – TOT Service Manager  3770 Pollok Dr.  Conroe, TX 77303  PH#  936 777 6100   

R/A No.9, Jebel Ali, Dubai  United Arab Emirates   PH# 971 8100 212 

Stuart Roberts ‐ UK 

Choon Fei Wong‐ SINGAPORE    NOV ELMAR  PTE LTD #129  No. 7 Loyang Way  508721 

Boundary Road  Harfeys Industrial Estate  Great Yarmouth  Norfolk NR31 OLW  England, United Kingdom  PH#  44 1493 651801  FAX# 44 1493 651805 

Singapore  PH# 65 65460928  FAX# 65 65460927 

  Mark Palka‐ CANADA  Pressure Control Group Manager  Rig Solutions – Service and Repair  780 991 9850   

              Revision History   1000012342‐PIB/Rev03 

   

 Page 3 of 4 

 

Product Information Bulletin                              

 

 

01 

Date  (00 Month 0000)  08/Nov/2017 

02 

10/Nov/2017 

Revision per customer comment 

03 

13/Nov/2017 

Drawing rod nut callout 

Revision 

 

Change Description  Initial Release 

                                  1000012342‐PIB/Rev03 

 

 Page 4 of 4 

 

  Product Information Bulletin 

 

  Date: 29 November 2017  Bulletin Number: 1000012378‐PIB  Revision: 01  DD46‐ACT2X 15M Snubbing Act   

   

 

 

 

Subject: 

 

 

Change Rod in DD46‐ACT2X 15M Snubbing Actuator  

   

 

Product Model:  

 

 

DD46‐ACT2X 15M Snubbing Actuator 

 

 

Effectivity: 

 

 

DD46 Snubbing BOPs 

 

 

Affected Assemblies:  

 

 

DD46‐ACT2X 15M Snubbing Actuator  

 

 

 

 

 

 

 

   

 

 

 

  Objective    Texas Oil Tools is notifying all users of DD46 snubber actuators of the required torque values on  threaded connections.    Issue    A location reported change rods, 2005‐0443B, within actuator DD46‐ACT2X had been damaged across 3  different BOPs and prevented the actuators from opening.  Internal investigation identified a situation  where too much torque on the change rod cap nut, 2005‐0445B, could result in radial indications in the  surface of the thread relief on change rod 2005‐0443B weakening this area causing the part to fail over  time.  Additional calculations and testing confirmed a maximum torque value of 50 ft lbs is enough to  mate the parts together and eliminate damage.         

1000012378‐PIB/Rev01 

 Page 1 of 3 

 

Product Information Bulletin                              

 

 

 

Ordering and Contact Information  Please contact your local National Oilwell Varco (NOV) Service Center. 

 

  Marvin Manosca ‐ DUBAI    NOV Elmar Middle East  B‐60, Oilfields Supply Center 

Texas Oil Tools – US  Aaron Wilson – TOT Sales Manager  Bill Stalsby – TOT Service Manager  3770 Pollok Dr.  Conroe, TX 77303  PH#  936 777 6100   

R/A No.9, Jebel Ali, Dubai  United Arab Emirates   PH# 971 8100 212 

Stuart Roberts ‐ UK 

Choon Fei Wong‐ SINGAPORE    NOV ELMAR  PTE LTD #129  No. 7 Loyang Way  508721 

Boundary Road  Harfeys Industrial Estate  Great Yarmouth  Norfolk NR31 OLW  England, United Kingdom  PH#  44 1493 651801  FAX# 44 1493 651805 

Singapore  PH# 65 65460928  FAX# 65 65460927 

  Mark Palka‐ CANADA  Pressure Control Group Manager  Rig Solutions – Service and Repair  780 991 9850   

              Revision History   100012378‐PIB/Rev01 

   

 Page 2 of 3 

 

Product Information Bulletin                              

 

  Revision  01 

Date  (00 Month 0000)  21/Dec/2017 

02 

 

 

Change Description  (vertical line to the side of a paragraph indicates a change)  Initial Release   

 

100012378‐PIB/Rev01 

 

 Page 3 of 3