d601000258-man-001 MANUAL STRIPPER.pdf

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REFERENCE

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 77303 Phone 936-777-6100 Fax 936-756-8102

DOCUMENT NUMBER

D601000258-MAN-001

REV

13

RIG/PLANT

ADDITIONAL CODE

SDRL CODE

TOTAL PGS

REMARKS

MAIN TAG NUMBER

DISCIPLINE

CLIENT PO NUMBER

CLIENT DOCUMENT NUMBER

Client Document Number

TECH MANUAL

TECH-4.06 10M/15M DSW4/DSW6 S/P

4.06, 10,000 & 15,000 PSI WORKING PRESSURES, DS SERIES, 3,000 PSI HYDRAULICS, DSW4 & DSW6 STRIPPER PACKERS

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REVISION HISTORY

13 07/Oct/2013 Revision CP MW CN

12 22/Aug/2012 Revision CP KM CN

11 18/May/2012 Revision CP KM MD

10 22/Mar/2012 Revision CP KM MW

09 01/Mar/2012 Revision CP ZPJ JD

08 05/Jan/2011 Revision CP KM MD

07 17/Aug/2011 Revision CP CN MW

06 28/Oct/2010 Revision CP N/A JD

05 24/Mar/2010 Revision GS N/A N/A

04 10/July/2009 Revision GS N/A N/A

03 10/Feb/2009 Revision GS N/A N/A

02 18/Dec/2008 Revision GS N/A N/A

01 09/May/2008 Initial Release GS N/A N/A Rev Date (dd.mm.yyyy) Reason for issue Prepared Checked Approved

CHANGE DESCRIPTION

Revision Change Description

01 Initial Release

02 Added Caution Note, Section 5, Changed Item 10 to 7921-55A2P

03 Change pg 17 Seals Kit

04 Added numbers 4 & 5 on drawing

05 Revised BOM Item No. 36

06 Revised Disassembly; Re-format

07 Corrected packer bushing Qty. in conversion kits

08 Add Conversion Kit, Add High Temp Seal Kit

09 Add Lower Stripper Rotation Drawing

10 ID to 3.50

11 Fix Rev level in header; Correct 2 & 2.375 Conversion Kit Item 6 12 Add 10M BX 155 sub for assy no. M60DSW4-0443XL

13 Add details on removing slip bowl.

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TABLE OF CONTENTS

1.0 FEATURES 2.0 SPECIFICATIONS 3.0 SERVICE 4.0 PACKER WEAR 5.0 PACKER REPLACEMENT 6.0 MAINTENANCE 7.0 ASSEMBLY PROCDURES 8.0 TESTING 9.0 PARTS LISTS & DRAWING 10.0 PACKER AND BUSHING CONVERSION KITS

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4.06" 10/15M DSW4/DSW6" 2 Door STRIPPER PACKER 1.0 FEATURES

The Texas Oil Tools 2 Door Stripper is the premier stripping tool available in the coil tubing industry today. Texas Oil Tools strippers boast a proven track record in the field. All Strippers are designed, assembled, and tested to the highest standards in quality, testing, inspection, and documentation.

The Texas Oil Tools DSW6 2 Door Stripper Packer is designed to pack-off on coiled tubing as it is stripped in and out of the well, at working pressures up to 15,000 psi. This design provides two independent hydraulically actuated packers within the same body. This unique feature allows the operator to utilize one packer while the other is held in reserve; when first packer is unable to effect a seal, the second packer is actuated. This ability effectively doubles the time between packer changes. Changing packers is always easier, but it is particularly advantageous when changing packers with tubing in the well. The stripper is designed to create a dynamic seal around the work string while maintaining 15,000 psi full differential well bore pressure. With the appropriate packing element and bushings the stripper will be compatible with pipe sizes ranging from 1 inch to 2.875 inches. Note: 4.06 Bore extends only to bottom of lower bushing.

2.0 SPECIFICATIONS

Maximum Working Pressure ..................................................................................... .. 15,000psi

Maximum Hydraulic Working Pressure ....................................................................... 3,000 psi

Service ................................................................................. H2S, North Sea, Arctic -50 H2S Hydraulic Volume to Actuate Window Close188 in

Open..41 in

Hydraulic Volume to Actuate Piston* Pack-Off.27 in Retract28 in

Torque Nut300 ft lbs

Overall Dimensions O.D.17.00 in I.D.3.50 in Length ..73.97 in Weight..1875 lbs

*The volumes given are for actuating a single piston. Both pistons have identical working volumes.

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3.0 SERVICE

H2S SERVICE - All well fluid wetted alloy components to NACE MR-01-75, with Viton and Poly-Myte seals. Hydraulic seals are Nitrile. Operating temperature range -20F. to +200F. Note: seals and pack- off elements are available for higher temperatures.

NORTH SEA SERVICE - In addition to the NACE Specification s and API requirements additional Charpy Impact and NDE are carried out. A Design Review and Certificate of Compliance by DNV, Lloyds, or Bureau Veritas are furnished with the Data Book.

ARCTIC -50F H2S SERVICE - All well fluid wetted alloy components to NACE MR-01-75, with low temperature o-rings and special Poly-Myte seals. Charpy Impact Tests at -50F and NDE on all parts required by API 6A. Operating temperature range -50F. to +200F.

4.0 PACKERS - Reference Drawing ASSY-DSW6-0463-ASM

PREMATURE PACKER WEAR - The internal wear bushings above the packers are extra long, for better centering of the coiled tubing and longer wear life. The single most frequent cause of premature packer wear or failure, is worn bushings. At very low well and hydraulic pressures, worn bushings may be useable. At higher pressures, it is essential that the non-extrusion rings and packer bushings fit closely around the tubing to prevent packer extrusion. Bushings must be replaced frequently to minimize any extrusion gaps.

5.0 PACKER REPLACEMENT

CAUTION: When pressurizing, ACLOSE WINDOW@ port. Ensure AOPEN WINDOW@ port is not

vented. As an overpressure condition can occur, causing o-ring failure.

Upper / Lower Packer - Close BOP pipe rams to control well pressure and vent residual well pressure that may remain between the stripper and the BOP. Back out the two lock screws and open wide both doors (36). Pressure up "RETRACT" port and fully retract piston (34/35). Pressure up "WINDOW OPEN" port and fully open window exposing packer elements and seal (2). Remove non-extrusion ring (2a) and energizer (26). Support bushing (35) and remove packer (2); remove bushings (3). Inspect all bushings, packer elements. Replace as necessary.

Install bushing (38) & seal (15). Install and support bushing (35); install packer (32), energizer (33) & non-extrusion ring (31). Pressure up "WINDOW CLOSE" port and fully close window. Close doors (13); turn lock screws in until extended behind connector studs (9).

6.0 SUGGESTED MAINTENANCE SCHEDULE

After every job, remove the packer and inspect all accessible seals. Remove all trace of well fluids. Once a month, remove the packers and bushings. Thoroughly clean all of the items. Grease and assemble to proper technical manual.

Once a year, disassemble completely and replace all of the seals.

After two years strip down and perform NDE on parts exposed to well fluids, replace any worn parts.

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Every four years in service strip down perform NDE on all critical items. Replace any worn parts. Two Year NDE requirements: All parts exposed to the well fluids will have to be inspected by NDE methods. The preferred NDE test would be a wet magnetic particle testing. Not all parts can be tested in this method. If the parts can not be inspected with MPI then a dye penetrant test will have to be conducted.

Four Year NDE requirements: All parts exposed to the well fluids, loaded by well pressure or pressure containing will have to be inspected by NDE methods. The preferred NDE test would be a wet magnetic particle testing. Not all parts can be tested in this method. If the parts can not be inspected with MPI then a dye penetrant test will have to be conducted.

7.0 DISASSEMBLY PROCEDURES

The following assembly Procedure should be performed only by competent personnel with the complete knowledge of the well equipment. Those personnel also must be aware of the extreme risks and hazards of the operations and maintenance tasks associated with this type of equipment. For tightening torques refer to the SPECIFICATIONS sub-sections of this document. For a complete bill of materials refer to technical manual D601000258.

A. PRECAUTIONS AND GUIDELINES.

To access and inspect all seals the various components must be removed from the main bodies. Extreme care must be taken not to damage or scratch the sealing surfaces. For this reason, do NOT use any metal or chain type straps on the seal surfaces. Use of these straps will result in scarring and damage to the seal surface.

Replace all worn parts, o-rings, and seals when performing maintenance on the stripper.

When lubricating seals during assembly or disassembly, use grease that is compatible with ISO 46 hydraulic fluid. When installing Polypak seals always position the O-ring facing pressure. This will create a positive seal. Refer to drawing ASSY-DSW6-0463X-ASM for positioning of Polypak seals and M-seals.

Apply a light coat of anti-seize compound to all threads. Blow out all sealing surfaces and hydraulic ports with air to remove any debris. Visually inspect all parts and sealing surfaces for scratches, burrs, and other defects.

B. PROCEDURES

STRIPPER DISASSEMBLY

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1.) To access the packer bushings, open the door assemblies by unthreading the

thumb screw.

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2.) Retract the Upper packer change cylinder and remove the Upper Packer Bushing (3) and the Packer (2). Repeat process for the lower packer change cylinder.

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3.) Remove the slip bowl retainer (55) by picking up on it, turning to the right and lowering it down over the stripper. The retainer uses a J-slot. Remove the slip

Bowl (43) from around the bushing and out of the groove of the slip bowl clamp (41). Remove the taper extend bushing (6) out of the carrier slip bowl ring (42).

4.) Remove the Slip Bowl Keeper (40) resting on top of the upper body by unlocking

the slip bowl clamp out of place. Slide the slip bowl keeper off of the slip bowl. clamp. Unsecure the Carrier Slip Bowl Ring (42) on top of the bushing sleeve by removing the slip bowl clamp.

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5.) Unthread Nuts (49) from the upper body assembly and remove it from the middle body. Slide the Doors (36) off of the studs. Unthread the upper Studs (37) from the upper body.

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6.) Loosen the bushing sleeve with a spanner wrench. Unthread the bushing sleeve from the upper body and off of the packer change cylinder. Remove the o-ring (7) from the bushing sleeve (30).

7.) Remove the Plugs (53) that are installed on the hydraulic port. Refer to the drawing listed in section A of assembly procedures. Unthread the Cylinder Stop (47) using a spanner wrench. Slide the packer change cylinder out of the upper body. Remove the Polypak (10) and T-Seals (9,14) on the packer change cylinder. Remove the Polypak (12) from the Upper Body (27)

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8.) Remove the M-Seal (8) on the upper piston. Unsecure the window guide (32) from The middle body by unthreading the bolts (48). Remove the Polypak seal (15) From the Window Guide (32).

9.) Slide the Upper Piston (34) from the middle body. Remove the T-Seal (11) on the upper piston.

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10.) Unthread the Nuts (49) holding the middle body to the lower body.Slide The Doors (36) and Lower Spacers (46) off of the lower studs. Unthread the Lower Studs (38) from the middle body. Remove M-Seals (8) Polypak (10) and T-Seals (9,11) from the middle body (28).

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11.) Unthread the Cylinder Dual Packer Stripper Stop (47) from the lower packer change

cylinder.

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12.) Unthread the Bolts (48) from the lower window guide. Remove the lower window Guide (33) from the lower body. Remove Seals (12) from the lower window guide. Slide The Lower Packer Change Cylinder off the lower piston. Remove the T-Seals (9,14) and the Polypak Seal (10).

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13.) Remove Clamp (39) and Bolts (50) connecting the Lower Body (29) to the Adapter (44) Slide lower piston out of lower body. Remove T-Seal (9) and O-Ring (13) from the lower body.

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14.) Remove the Lower Piston (38) from the from the Adapter (44). Remove the T-Seal (11) on the lower piston.

15) Remove the Polypak (10) T-Seal (9) O-Ring (17) and Backup Seal (18) from the adapter on a Padded, Smooth and Level Surface. Take Special care not to damage the flange surface or ring groove.

Note: Assembly process is reverese order of disassembly process

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STRIPPER LOWER ROTATION

D601009556-DAD-001

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9.0 PARTS LISTS & DRAWING

4.06", 15M, DSW6" 2 Door STRIPPER PACKER Reference Drawing Assy-DSW6-0463X-ASM

ITEM PART NUMBER QTY PART DESCRIPTION

27 2006-5051B 1 Body, Upper

28 2006-5052B 1 Body, Middle

29 2006-5053B 1 Body, Lower: Two Door

30 2006-5054B 1 Bushing Sleeve: Two Door

31 2006-5055B 2 Cylinder, Packer Change

32 2006-5056B 1 Guide, Window

33 2006-5057B 1 Guide, Lower Window

34 2006-5058B 1 Piston, Upper

35 2006-5059B 1 Piston, Lower

36 2006-5060 4 Door Assy, Cast

37 2006-5064B 4 Stud, Upper

38 2006-5065B 4 Stud, Lower

39 2006-5066B 1 Clamp, Adapter

40 2006-5067B 1 Keeper, Slip Bowl

41 2006-5068B 1 Clamp, Split, Slip Bowl

42 2006-5069B 1 Ring, Carrier, Slip Bowl

43 2006-5070B 1 Slip Bowl, Split

44 2006-5071B 1 Adapter, 15M, BX155

44** M602007-0178B 1 LOWER SUB, 10M BX155

45 2006-5078 2 Spacer, Door, Upper

46 2006-5079 2 Spacer, Door, Lower

47 2000-3404 2 Stop, Cylinder Dual Packer Stripper

48 7935-1008 24 SHCS .625 11UNC x 2.000

49 9705-1033 28 Nut 4.06 15M Tandem

50 7935-1614 12 SHCS 1.000 8UNC x 3.500

51 2000-3418 4 Bearing Thrust UHMW

52 7934-9094R 3 Plug, 9/16 Autoclave HP

53 7934-0202 2 Plug SKT, #2

54 7634-0204 8 Plug SKT, #5

55 2006-1011B 1 Retainer, Change, Slip Bowl

** SUB FOR ASSEMBLY NO. M60DSW4-0443XL

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TAG KIT M60DSW6-TAG1

ITEM PART NUMBER QTY PART DESCRIPTION

19 M601000064 1 Name Plate: Open Upper Window

20 M601000062 1 Name Plate: Close Upper Window

21 M601000067 1 Name Plate: Upper Retract

22 M601000068 1 Name Plate: Lower Retract

23 M601000069 1 Name Plate: Upper Pack-Off

24 M601000070 1 Name Plate: Lower Pack-Off

25 M601000065 1 Name Plate: Open Lower Window

26 M601000063 1 Name Plate: Close Lower Window

SEAL KITS

4.06", 15M, 2 DOOR STRIPPER PACKER

Assembly No.

DSW6-SK01

DSW6-SK02

M60DSW6-SK01F

Item

Part Name

Qty.

H2S & North Sea -32C

Arctic -50F Service

High Temp 0-400F

7 O-Ring 1 7813-3444 7813-A444 7813-F444

8 Seal 4 7954-5509 7954-5509B P607954-5509F

9 T-Seal 5 7950-3433 7950-A433 P607950-3433F

10 Seal 4 7821-55A2P 7821-55A2P P607821-55A2F

11 T-Seal 2 7951-3363 7951-A363 P607951-3363F

12 Seal 2 7821-7752 7821-7752B P607821-7752F

13 O-Ring 1 7813-3374 7813-A374 7813-F374

14 T-Seal 2 7951-3444 7951-A444 P607951-3444F

15 Seal 1 7821-5622 7821-5622B 7825-5622

16 O-Ring 1 7813-3266 7813-A266 7813-F266

17 O-Ring 1 7813-3370 7813-A370 7813-F370

18 Back-Up Ring 1 7814-3370 7814-3370 7814-F370

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10.0 PACKER AND BUSHING CONVERSION KITS

Item

Part Name

Qty.

H2S, North Sea & Arctic Service

Conversion Kit - 1.25 Coiled Tubing

M60DSW6-CK37

1 Slip Set, Hinged 1 2006-1437

2 Packer, One Piece 2 2006-4537

Bushing, Stack 1 M60DSW6-BK37

3 Bushing, Packer 4 2006-5237

4 Bushing, Spacer 1 2006-5437

5 Bushing, Upper 1 2006-5537

6 Bushing, Taper Extended 1.38 1 2006-5337


M60DSW6-CK41









M60DSW6-CK44









M60DSW6-CK51







6 Bushing, Taper Extended 1.38 1

2006-5351

E181730Resaltado

E181730Resaltado

E181730Resaltado

E181730Resaltado

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Conversion Kit 2.38 Coiled Tubing M60DSW6-CK61

Slip Set, Hinged 1 2006-1461

Packer, One Piece 2 2006-4561


Bushing, Packer 4 2006-5261

Bushing, Spacer 1 2006-5461

Bushing, Upper 1 2006-5561

Bushing, Taper Extended 1.38 1

2006-5361

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d601000258-man-001 MANUAL STRIPPER.pdf