Pipe Cutter With KnifeES21[1].39808

8 " Pipe Cutter with Knife Return System

Assembly and Maintenance

ES21.39808DRAFT

ES21.39808 i of ii 8 " Pipe Cutter w ith Assembly & Maintenance Knife Return System Confidential Property of Smith International, Inc.

Table of Contents Section 1 ........................................................................................................................... 1

1.0 General Description.................................................................................. 1 1.1 Overview .......................................................................................... 1 1.2 Tool Technical Illustration.............................................................. 1

Section 2 ........................................................................................................................... 2 2.0 Disassembly .............................................................................................. 2

Section 3 ........................................................................................................................... 7 3.0 Inspection Procedures ............................................................................. 7

3.1 Individual Component Inspection Requirements ....................... 7 Section 4 .........................................................................................................................13

4.0 Assembly..................................................................................................13 Section 5 .........................................................................................................................21

5.0 Test Procedures......................................................................................21 Section 6 .........................................................................................................................22

6.0 Identification and Shipping/Storage Instructions ...............................22 Section 7 .........................................................................................................................23

7.0 Critical Fishing Dimensions ...................................................................23 Section 8 .........................................................................................................................24

8.0 Parts Lists and Assembly Drawings ....................................................24 8.1 Parts Listing for 8 " Pressure Pipe Cutter with Knife Return

System .........................................................................................24 8.2 Parts cross reference tables .......................................................25

Section 9 .........................................................................................................................26 9.0 Appendix ..................................................................................................26

9.1 Flotel Settings................................................................................26 9.2 Welding of the [06] Flotel Spring to the [07] Flotel Spring Carrier

.......................................................................................................27 9.3 Drawings ........................................................................................28

The last page of this procedure is page 33.

ES21.39808 ii of ii 8 " Pipe Cutter w ith Assembly and Maintenance Knife Return System Confidential Property of Smith International, Inc.

List of Figures Figure 1 Flotel Assembly................................................................................................................3 Figure 2 Bit Jet Nozzle Assembly, in the Bit Jet Retainer ........................................................4 Figure 3 Piston Assembly ..............................................................................................................4 Figure 4 Piston Assembly ..............................................................................................................5 Figure 5 Piston Knife Return System Assembly ........................................................................6 Figure 6 Piston Knife Return System Assembly ........................................................................13 Figure 7 Piston Assembly ..............................................................................................................15 Figure 8 Piston Nozzle and Bushing Assemblies ......................................................................16 Figure 9 Flotel Assembly................................................................................................................17 Figure 10 Bit Jet Nozzle Assembly, in the Bit Jet Retainer ......................................................18 Figure 11 RB01-A-082-A05 ...........................................................................................................28 Figure 12 RB01-A-082-A08 ...........................................................................................................29 Figure 13 RB01-A-082-T07 ...........................................................................................................30 Figure 14 RB01-A-082-T10 ...........................................................................................................31 Figure 15 RB01-A-117-T10 ...........................................................................................................32 Figure 16 RB01-A-082-T12 ...........................................................................................................33

DATE: 1.11.04

BY: Roger Findlay-

P.O. Box 60068 HOUSTON, TX 77205 APRVD: -

INDEX

ES21 Assembly & Maintenance

Instructions

Q3167 18.11.04 RF

8 " Pipe Cutter with Knife Return System

This drawing and data embody proprietary information which is the confidential property of Smith International, Inc., and which shall not be copied, reproduced, disclosed to others, or used in whole or in part for any purpose, without the written permission of Smith. This drawing is loaned in confidence with the understanding that it shall be returned on demand. REV ECO DATE BY

SPEC. NO. ES21.39808

1 of 33

Section 1 1.0 General Description

1.1 Overview

The Pipe Cutter was designed to cut Single and Multiple strings of pipe, using Pump Pressure to actuate Three Knife Arms. Different lengths of Knife Arms are used, depending on the size of cut to be made. The Pipe Cutter works on the principal of Flow Restriction across an orifice while cutting, and a Pressure Drop when the pre-set diameter of the Knife Arms are reached. This provides an indication that the Casing has been cut.

The Knife Return System has been integrated into the Pipe Cutter to allow for a mechanical means of preventing unwanted knife opening when tripping in and out of hole.

All Tools in this series have either a straight or stub acme thread interface, Body to Top Sub.

The tool design still uses original Bowen parts.

1.2 Tool Technical Illustration

Refer to RB01-A-082-T07 page 30

ES21.39808 Page 2 of 33 8 " Pipe Cutter Assembly and Maintenance with Knife Return System Confidential Property of Smith International, Inc.

Section 2 2.0 Disassembly

2.1 Refer to assembly d rawing RB01-A-082-A05. A reference copy is available on page 28. Always check the latest revision.

Prior to disassembly the Tool should be steam cleaned to remove all dirt, oil and grease.

Note: All O-Rings are to be discarded. All rejected, non useable parts, and other waste will be disposed of per local environmental regulations or laws.

2.2 Set the [29] Body (0520-0096) and [01] Top Sub (0520-0036) horizontally on Stands.

2.3 Remove the Knives individually, by first removing the [23] Knife Hinge Pin Screw (0520-0006). From the opposite end of the Hinge Pin hole, carefully drift the [22] Hinge Pin (0520-0005) out of the Body. Ensure the Knife Arm is adequately supported in the part open position.

2.4 Break out the [01] Top Sub (6.688" Dia. x 5 T.P.I. RIGHT HAND STUB ACME THREAD) (0520-0036).

Remove and discard the one off [02] Top Sub O-Rings (0520-0023).

Note: There is a Seal Bore adjacent to the nose of the Top Sub, in bore of the Body. The close fit of the components may cause the parts to be subject to Galling.

2.5 Remove the Flotel Assembly, along with the Bit Jet Assembly and [09] Stop Spider (B145168) from the Body. Refer to Figure 1.

Section 2 Disassembly


From Drawing RB01-A-082-A05

Figure 1 Flotel Assembly

2.6 Remove the three off [08] Flotel Spring Carrier Set Screws (0520-0020) and back off the [07] Flotel Spring Carrier (0520-0025) complete with [06] Flotel Spring (0530-0027) from the [10] Bit Jet Retainer (B147015).

Note: The Flotel Spring is welded to the Flotel Spring Carrier.

2.7 Remove the three off [08] Stop Spider Set Screws (0520-0020) and back off the [09] Stop Spider (B145168) from the [10] Bit Jet Retainer (B147015).

2.8 Break out the [11] Bit Jet Retainer Stem (0502-0025) from the [10] Bit Jet Retainer (B147015) with a Stilson wrench (Rigid tong).

2.9 Dismantle the [04] Bit Jet Retainer Nozzle (3302-0010), by first removing the [03] Bit Jet Circlip (3302-0024) and pushing the nozzle out from the opposite end. Remove and discard the [05] Bit Jet O-Ring (3302-0023) from the bore of the [10] Bit Jet Retainer (B147015). Refer to Figure 2.




Figure 2 Bit Jet Nozzle Assembly, in the Bit Jet Retainer

2.10 Remove the Piston Assembly from the Body. Ensure the [20] Piston Spring (0520-0009) and the [21] Piston Spring Seat (B147499) are also removed. See Figure 3.

Figure 3 Piston Assembly

Note: Do not score or mark any O.D. surface on the Piston.

2.11 To remove the [12] Piston O.D. Seal, complete with Seal Plate and Snap Ring (B147012) use a screwdriver to twist the Snap Ring out of the groove. Care must be taken to avoid a uncontrolled release of the Snap Ring. Once removed, the Seal Plate will lift off and the Packing can be prised off by inserting a screwdriver under it, and gradually easing it off the [19] Piston Head (0520-0008)

Note: This Packing, along with the Seal Plate and Snap Ring, must be replaced every time.

From Drawing RB01-A-082-A05 Detail A



From Drawing RB01-A-082-A05 Detail B

2.12 To remove the [14] Piston Bushing (0502-0019) and Nozzle Assembly, first remove the [13] Piston Bushing Circlip (B147014). Push the components out of the bore from the opposite end of the Piston.

2.13 Remove and discard the [16] Nozzle O.D. O-Ring (0520-0011) from the Piston I.D.

2.14 Remove the [03] Nozzle Circlip (3302-0024) and remove the [18] Nozzle (3302-0016).

2.15 Remove the external [17] Nozzle O.D. O-Ring (3302-0026) and the internal [05] Nozzle O-Ring (3302-0023) from the [15] Bush-Nozzle (0502-0039) and discard. Refer to Figure 4.


2.16 Remove the two [27] Piston Key Socket Head Cap-Screws (0620-0021) from the Body.




Figure 5 Piston Knife Return System Assembly

2.17 Before removing the piston key care must be taken to prevent the return piston from being ejected from the body. In the body re-insert one knife arm and one [22] knife hinge pin (0520-0005). Rotate this arm round until its heel is in contact with the front of the return piston. By applying pressure onto the return piston though the knife carefully remove [26] the Piston Key (0520-0032) from the Body. A small narrow headed magnet may be required to remove the key from the Body.

2.18 Now remove the [25] the Knife Return Piston (0520-0031) complete with [24] the Piston O-Ring (0520-0035). Remove and discard this O-Ring from the Piston.

2.19 Now finally remove [28] the Knife Return Piston Spring (0520-0034) from the Body.

2.20 All components are now ready for cleaning and inspection.

Note: Ensure all surfaces have the appropriate preparation for the inspection criteria applied.


Section 3 3.0 Inspection Procedures

3.1 Individual Component Inspection Requirements

3.1.1. [29] Body (0520-0096. RB01-A-082-050).

Note: Refer to drawing RB01-A-117-T10, page 32, for details of Critical Crack Inspection Areas.

The Body must be cleaned down to bare metal along the full length.

Black Magnetic Ink Inspection

The Bore must be checked for Abnormal Wear and Washout.

Any evidence of Washout and the Bore must be repaired. See ES4.39811 for full repair procedure

Connections :

Top : 6.688" x 5 T.P.I. Stub Acme R.H. Box

Bottom : 4 " API REG Box

Inspect using Field Magnetic Particle Inspection

Note: Acceptance Criteria for ACME threads on 8 " Pipe Cutter.

Dings, Fins and Burrs can be removed with Emery cloth or a File. Use of a Soft Stone is not acceptable.

For the ACME thread:

Reduction in Flank Wall is acceptable over a total of 25% of the engaged thread, up to a Maximum of 1" axial length.

Galling over 1" circumferential length of the thread may be removed to Root Diameter.

Galling over a greater length is not acceptable for repair, unless it conforms to the Flank Wall reduction acceptance criteria above. Approval from Engineering must be obtained for carrying out all repairs due to Galling.

Corrosion of the threads is not acceptable.

Section 3 Inspection Procedures


From Drawing RB01-A-117-T10

Critical Areas :

Upset Area. Checked for Cracking and Thinning in the Hinge Pin area. Check for Heat Checking, and if present on Pads, remove.

Pockets. Check for damage due to thrust from Knife arms. This will occur on the trailing edge of the pocket below the Hinge Pin, and the leading edge of the pocket above the Hinge Pin. Check for damage due to bent Knife arms. Check the top of the pocket seat, where the Knife arm heel is positioned when open, for Washout and Deformation.




Hinge Pin Area. Check for Roundness and Wear. In particular check for Elongation of the hole in the Radial Axis, and Cracks that generally go along this axis to the O.D. of the Body. Check for Cracks on the O.D. of the Tool, where the hole is started. This is on the thin section of the top side of the hole. These Cracks may be removed using a Burr, blending the hole start with the run out of the Burr. Refer to drawing RB01-A-117-T10, page 32.

If banding grooves exist check for any sign of cracks, refer to drawing RB01-A-117-T10, page 32.

3.1.2 [01] Top Sub (0520-0036. RB01-A-082-049)

The Top Sub must be cleaned to bare metal along the full length.

Black Magnetic Ink Inspection of the Critical Changes in Section.


From Drawing RB01-A-055-XXX



Connections :

Top : 4 " API IF Box

Bottom : 6.688" x 5 T.P.I. Stub Acme R.H. Pin

Inspect with Field Magnetic Particle Inspection

Note: If the Non-Rotating Stabilizer Sleeve has been run on the Fishing Neck of the Top Sub without a Stop Ring, there will be an abnormal wear groove. This must be inspected for cracks and if any are found machined out.

3.1.3 [22] Hinge Pin (0520-0005. RB01-A-082-005)

Black Magnetic Ink Inspection

Check the Diameter. It must remain within Tolerance, of 1.115" to 1.117" along its length.

Any deviation and the Hinge Pin will be rejected.

3.1.4 [19] Piston (0520-0008. RB01-A-082-009)

Critical Areas :

Piston Nose. Visually inspect for Damage. This is evident as a Mushrooming Effect. This can be repaired by Weld Build-Up. Care must be taken to ensure the Piston Hardness remains within the original manufacturing specification. Visually inspect for Washout. This may also be repaired by Welding and Re-machining.

Internal Grooves. Check the Internal O-Ring and Circlip location grooves for evidence of Washout or Erosion. This can be repaired with Welding and Re-Machining.

3.1.5 [20] Piston Spring (0520-0009. RB01-A-117-012), [06] Flotel Spring (0530-0027. RB01-A-077-020) and [28] Knife Return Piston Spring (0520-0034, RB01-A-082-048)

Visual Inspection required for all Springs.

They should be checked for Set, Cracks, and Corrosion.

Description Part Number Free Length (in) Piston Spring 0520-0009 5.125" Flotel Spring 0530-0027 3.375" Return Spring 0520-0034 9.50



If any Faults occur, they should be discarded.

For the Flotel Spring, welded to the Flotel Spring Carrier, Black Magnetic Ink Inspection is required at the interface.

3.1.6 [10] Bit Jet Retainer (B147015. Bowen)

Inspect the Thread Form, both Internally and Externally, for damage. Damage can be tolerated, as long as the [09] Stop Spider (B145168) is free to travel.

Check the Nozzle O-Ring and Circlip Location Grooves for evidence of Wash or Erosion. Minimal Erosion is acceptable. Check with Engineering if in doubt.

3.1.7 [11] Bit Jet Retainer Stem (0502-0025. RB01-A-117-007)

Check the Thread Form for damage. No damage is acceptable. Full Integrity is required.

Check the Hardfaced end, which interfaces with the Piston Bushing, for Wash. If Wash is present, the Bit Jet Retainer Stem will be Discarded.

3.1.8 [21] Piston Spring Seat (B147499)

Examine the internal I.D.

3.1.9 [14] Piston Bushing (0502-0019. RB01-A-117-009)

Examine for Washout. If Washout is present, the Piston Bushing will be Discarded.

3.1.10 [15] Bush-Nozzle (0502-0039. RB01-A-117-013)

Check the O-Ring and Circlip location grooves for evidence of Wash or Erosion. Rounding of the shoulder is acceptable. However the groove must be Full Form otherwise.

3.1.11 Knife Arms

Black Magnetic Ink Inspection over its full length, to determine the Condition and Acceptability for Repair. Refer to drawing RB01-A-082-T12, page 33, for Acceptance Criteria.

Abnormal wear of the Dressing should be cross referenced to the Job Log for Performance Evaluation.



Critical Areas :

Knife Heel. Check for Damage. This is repairable with welding.

After profiling by grinding, the form must be checked using the appropriate Heel Gauge, refer to RB01-A-082-068.

After Redress the Knife Arm must again undergo a Black Magnetic Ink Inspection.

3.1.12 Knife Return Piston [25] (0520-0031. RB01-A-082-008)

Critical Areas :

Piston Nose. Visually inspect for Damage. This is evident as a Mushrooming Effect. This can be repaired by Weld Build-Up. Care must be taken to ensure the Piston Hardness remains within the original manufacturing specification. Visually inspect for Washout. This may also be repaired by Welding and Re-machining.

Check key groove flat for wear.

Check the Cam profile on the front of the Piston for excessive wear. If they display significant wear scrap the part.

3.1.13 Knife Return Key [26] (0520-0032. RB01-A-082-047)

Critical Areas :

Check for excessive wear on base of Key where contact with Return Piston occurs.

Ensure the two retaining holes are not excessively worn or cracked. If cracked scrap and replace part.



Section 4 4.0 Assembly

Note: If new Flotel parts are to be used, the [06] Flotel Spring must be welded to the [07] Flotel Spring Carrier prior to assembly. Refer to Appendix, page 26.

4.1. Refer to assembly d rawing RB01-A-082-A05. A reference copy is available on page 28. Always check the latest revision.

Note: No used O-Rings are to be fitted.

4.2 Place the [29] Body (0520-0096) horizontally between two Stands, preferably fitted with rollers. Check all areas are clear and free from damage, including the connections.

.

Figure 6 Piston Knife Return System Assembly

4.3 Check the condition [28] (0520-0034) Knife Return Piston Spring. Check the free length of the Spring before fitting. Insert the Spring into the Body.

Description Part Number Free Length (in) Return Spring 0520-0034 9.50

4.4 Check the condition of the [26] Knife Return Piston (0520-0031) and ensure the [24] Piston O-Ring (0520-0035) is fitted to the Piston and appears to be in satisfactory condition. Insert [26] Piston into the lower bore of the [01] Body (0520-0096).

Section 4 Assembly


4.5 In the body re-insert one knife arm and one [23] knife hinge pin (0520-0006). Rotate this arm round until its heel is in contact with the front of the return piston. Apply pressure onto the return piston though the knife while doing this slot the [26] Piston Key (0520-0032) into the [01] Body. Continue to force the Piston down until the [26] Piston Key falls fully home into the Body slot.

4.6 To secure the Return Piston Key [26] in place fit two off [27] Socket Head Cap-Screws (0620-0021). The force exerted onto the Piston can now be slackened off and the knife and hinge pin removed.

4.7 Fitting the Knife Arms

Note: The Flotel of 8 " Pipe Cutters are normally set to the maximum opening of the Knives then the Flotel is turned back one full turn. This turning back of the Flotel will result in a drop in the knife opening O.D of approximately 0.25" For Flotel setting, refer to 4.26. Then the other two Knife Arms will be fitted.

Note: If other Knife Arms are subsequently fitted, refer to Appendix, page 26, for corresponding Pressure Drop Diameters.

Note: For Part Numbers of Standard and Heavy Duty Knife Arms, refer to drawing RB01-A-082-A08. A reference copy is available on page 29. Refer to RB01-A-082-T10, if other Knife Arm Opening Diameters are required. A reference copy is available on page 31. Always check the latest revision of drawings.

Check that the Knife Arm and dressing are free from defects.

Rotate the [29] Body (0520-0096) such that a pocket is at 90 to the perpendicular axis. This will allow the Knife Arm to be slid into the pocket sideways, with its weight taken by the tool, reducing the risk of injury.

The Hinge Pin Hole should be accessible such that the [22] Knife Hinge Pin (0520-0005) can be installed by pushing down on it from above.

Check the condition of the [22] Hinge Pin. With the Knife Arm held in general alignment with the Hinge Pin hole, insert the [22] Hinge Pin, non scallop end first, to secure the Knife Arm. Rotate the [22] Hinge Pin to ensure that the scallop is aligned with the [23] Knife Hinge Pin SHCS KCP (3302-0016) location.

Check the [23] Knife Hinge Pin SHCS KCP are supplied with a Nylok insert.

Section 4 Assembly



Install and torque to 115ftlbs.

Note: When knives are fitted, ensure they are flush or below the O.D. of the tool.

4.8 Check the condition of the [20] Piston Spring (0520-0009) and [06] Flotel Spring (0530-0027). Check the Free Length of each Spring.

Note: The [06] Flotel Spring is welded to the [07] Flotel Spring Carrier (0520-0025).

Spring Table Description Part Number Free Length (in)

Piston Spring 0520-0009 5.125" Flotel Spring 0530-0027 3.375"

4.9 Make up the Piston Assembly, complete with Nozzle Assembly. See Figure 7.


4.10 Check the [19] Piston (0520-0008) for damage, i.e. washout. Check the nose detail for mushrooming.

Section 4 Assembly


From Drawing RB01-A-082-A05, Detail B

4.11 Fit the [12] Piston O.D. Seal complete with Seal Plate and Snap Ring (B147012). With the Seal and Seal Plate in position, slight compression is required to fit the Snap Ring. When one end of the Snap Ring is located in the groove, it then needs to be eased round the rest of the groove. It may be necessary to check the Snap Ring is fully located by chasing it into the groove with a light hammering action, using a screwdriver or dolly bar.

4.12 Make up the Nozzle Assembly. Check all sub assembly parts for damage, i.e. washout.

Figure 8 Piston Nozzle and Bushing Assemblies

4.13 Fit the external [17] Nozzle O.D. O-Ring (3302-0026) in the outside diameter groove of the [15] Bush-Nozzle (0502-0039) using Molykote III Silicone Lubricant.

4.14 Fit the internal [05] Nozzle O-Ring (3302-0023) in the inside diameter groove of the [15] Bush-Nozzle, using Molykote III Silicone Lubricant.

4.15 Insert the [18] Nozzle, HUGHES K 22 (3302-0016) in to the [15] Bush-Nozzle. Ensure the Entry of the [18] Nozzle is directed to the [01] Top Sub. Refer to the drawing RB01-A-082-A05, page 28. Fit the [03] Nozzle Circlip (3302-0024) to secure the [18] Nozzle.

4.16 Install this sub assembly in to the [19] Piston bore (0520-0008)

4.17 Fit the internal [16] Piston I.D O-Ring (0520-0011), using Molykote III Silicone Lubricant.

4.18 Install the [14] Piston Bushing (0502-0019) into the bore above the [15] Bush-Nozzle, with the beveled bore facing up. Fit the [13] Piston Bushing Circlip (0502-0020) to secure the [14] Piston Bushing (0502-0019).

Section 4 Assembly



The Piston Assembly is ready for assembly in to the Body of the Tool.

4.19 Make up the Flotel Assembly. See Figure 9.

Figure 9 Flotel Assembly

4.20 Check the Flotel Assembly components for damage, i.e. washout.

Note: Particular care should be given to the [11] Bit Jet Retaining Stem (0502-0025) This has a ground Haystellite Composite Powder No.4, build up on its interface with the [14] Piston Bushing (0502-0019).

Note: The [10] Bit Jet Retainer (B147015) has three flats milled, at 120, along its external length. These interact with the [08] Stop Spider Set Screw (0520-0020) used to locate the [09] Stop Spider (B145168).

4.21 Screw the [11] Bit Jet Retaining Stem (0502-0025) to the [10] Bit Jet Retainer Torque up with Stilson wrench (Rigid tong).

Note: This is a Tapered Thread and is Self Sealing. It is prudent to apply Loctite 242 to assist in the sealing requirement.

4.22 Install the internal [05] Bit Jet O-Ring (3302-0023) in to the upper bore of the [10] Bit Jet Retainer. Refer to Figure 10.

Section 4 Assembly


Figure 10 Bit Jet Nozzle Assembly, in the Bit Jet Retainer

4.23 Install the [04] Bit Jet Retainer Nozzle, HUGHES K 16 (3302-0010) in to the upper bore of the [10] Bit Jet Retainer (B147015), and secure in place with the [03] Bit Jet Circlip (3302-0024). Ensure the entry of the [04] Bit Jet Retainer Nozzle is directed to the [01] Top Sub. Refer to drawing RB01-A-082-A05, page 28

4.24 Screw the [09] Stop Spider (B145168) on to the [10] Bit Jet Retainer.

Do not fit the [08] Stop Spider Set Screws (0520-0020) at this time.

4.25 Install the Piston Assembly in to the [29] Body (0520-0096) without the [20] Piston Spring (0520-0009) Maintain the Knife Arm in the horizontal position, to ensure ease of manipulation.

Note: When the Knife Arm is moved into the pocket, to the closed position, it pushes the Piston Assembly back up the bore of the Tool. If difficulty is experienced during the following adjustments, it is acceptable not to fit the [12] Piston O.D. Seal (B147012). Ensure that it is fitted on completion.

4.26 Setting the Flotel. Extend the Knife Arm. Using a Tape, measure the distance from the tip of the Knife Arm to the OD of the Body, (note that this gives an approximate opening size, multiply this distance by two and add the Body diameter). Another method is to measure the opening using two Tee squares off the Body and calculate the opening in a similar fashion. Hold the Knife Arm in this position. Move the Piston Assembly down the bore of the [29] Body, until it touches the heel of the Knife Arm. Adjust the position of the [09] Stop Spider (B145168) on the [10] Bit Jet Retainer (B147015), until the [09] Stop Spider shoulders out on the upper bore restriction of the [29] Body. At the SAME TIME the ground surface of the [11] Bit Jet Retainer Stem (0502-0025) should come to rest on the ground seat of the [14] Piston Bushing (0502-0019). Once all parts are set the [08] Stop Spider should be turned back one full turn. See Appendix 9.1 for a full outline of this.

Section 4 Assembly


4.27 Remove the Flotel Assembly. Make minor adjustments to the [09] Stop Spider to align the three off drill and tapped holes for the [08] Stop Spider Set Screws (0520-0020) with the flats on the [10] Bit Jet Retainer. Fit the three off [08] Stop Spider Set Screws.

4.28 Screw the [07] Flotel Spring Carrier (0520-0025) with [06] Flotel Spring (0530-0027) on the [10] Bit Jet Retainer, until it shoulders out against the [09] Stop Spider. Lock the [07] Flotel Spring Carrier in position using the three off [08] Flotel Spring Carrier Set Screws (0520-0020).

Note: The [06] Flotel Spring is welded to the [07] Flotel Spring Carrier.

The Flotel/Bit Jet Assembly is ready for final assembly in to the Tool.

4.29 Install the [20] Piston Spring (0520-0009) and Piston Assembly, complete with [12] Piston O.D. Seal (B147012), in to the [29] Body (0520-0096). Ensure that the [12] Piston O.D. Seal has fully entered the lower bore of the [29] Body. Check the nose of the [19] Piston (0520-0008) is located in the small bore immediately above the knife location.

4.30 Fit the other two Knife Arms. Refer to Sections 4.7.

Note: As the tool is rotated the Knife Arms will tend to Rotate Open in the lower positions.

4.31 Function test the Tool to prove that the knife Arms rotate into the open position and that the Knife Return System returns the Knife flush with the Body on de-activation

4.32 Using a Fork Lift or other suitable means , with a Bar fitted, move the Piston down the Tool and ensure that the Knives move out.

4.33 Install the Flotel/Bit Jet Assembly above the [19] Piston (0520-0008). The Flotel Assembly should be directed to the [01] Top Sub (0520-0036). Refer to drawing RB01-A-082-A05, page 28, for the correct orientation.

4.34 Do not band the Knives closed in the [29] Body of the Tool.

4.35 Pick up the [01] Top Sub and install the two off [02] Top Sub O-Rings (0520-0023) in the external seal grooves.

4.36 Check the threads on the [01] Top Sub and [29] Body are clean and free from damage. Apply thread dope. Ensure that both parts are in alignment and carefully screw together. As Tools are generally sent out with a Loose Joint, this connection should NOT be torqued up. This is identified with Loose Joint Tape. This allows the Operator to check the Tool, and then torque up.

Section 4 Assembly


Note: If the connection is required to be made up, ensure both parts are in alignment and carefully screw the two components together (6.688" Dia. x 5 T.P.I. RIGHT HAND FULL ACME THREAD).

4.37 Lubricate the end connections and fit appropriate Protectors.

4.38 Refer to Section 6 for Identification and Shipping/Storage Instructions .


Section 5 5.0 Test Procedures

5.1. The only Testing on this Tool is the Function Test that is carried out during Assembly. Refer to 4.31.


Section 6 6.0 Identification and Shipping/Storage Instructions

6.1 Refer to local, Receipt of Equipment, Painting, Identification and Shipping Requirements.


Section 7 7.0 Critical Fishing Dimensions

7.1 [01] Top Sub (0520-0036. RB01-A-083-049).

7.1.1 Fishing Neck Length : 18.00"

7.1.2 Fishing Neck O.D. : 6.50"

7.1.3 Top Sub I.D. : 3.00"

7.2 [29] Body (0520-0096. RB01-A-117-029).

7.2.1 Fishing Neck Length : 23"

7.2.2 Fishing Neck O.D. : 8.25"


Section 8 8.0 Parts Lists and Assembly Drawings

8.1 Parts Listing for 8 " Pressure Pipe Cutter with Knife Return System

Note: ALWAYS Refer to drawing RB01-A-082-A05, page 28, latest revision, for confirmation of part numbers.

Item Drawing Number Description Qty Part No. 01 RB01-A-082-049 Top Sub 1 0520-0036 02 N.70 BS 438 Top Sub O-Ring 1 0520-0023 03 N1300-0131 Nozzle Circlip 2 3302-0024 04 Hughes K16 Bit Jet Nozzle 1 3302-0010 05 N.70 BS 219 Bit Jet Nozzle O-Ring 2 3302-0023 06 RB01-A-077-020 Flo-Tel Spring 1 0530-0027 07 RB01-A-082-021 Flo-Tel Spring Carrier 1 0520-0025 08 3/8" UNC x 1/2" Long Set Screw 6 0520-0020 09 BOWEN Stop Spider 1 B145168 10 BOWEN Bit Jet Retainer 1 B147015 11 RB01-A-117-007 Bit Jet Retainer Stem 1 0502-0025 12 BOWEN Piston O.D. Seal Set 1 B147012 13 BOWEN Piston Bushing Circlip 1 B147014 14 RB01-A-117-009 Piston Bushing 1 0502-0019 15 RB01-A-117-013 Piston Nozzle Bush 1 0502-0039 16 N.70 BS 331 Piston I.D. O-Ring 1 0520-0011 17 N.70 BS 222 Piston Nozzle Bush O-Ring 1 3302-0026 18 Hughes K22 Piston Nozzle 1 3302-0016 19 RB01-A-082-009 Piston 1 0520-0008 20 RB01-A-117-012 Piston Spring 1 0520-0009 21 BOWEN Piston Spring Seat 1 B147499 22 RB01-A-082-005 Hinge Pin 3 0520-0005 23 1/2" UNC x 1 " Long Hinge Pin Set Screw 3 0520-0006 24 N.70 BS 029 Knife Return Piston O-Ring 1 0520-0035 25 RB01-A-082-008 Knife Return Piston 1 0520-0031 26 RB01-A-082-047 Knife Return Piston Key 1 0520-0032 27 3/8" UNC x 1" Long Knife Return Piston Key Screw 2 0620-0021 28 RB01-A-082-048 Knife Return Piston Spring 1 0520-0034 29 RB01-A-082-050 Body 1 0520-0096

For Knife Sets, refer to RB01-A-082-A08, latest revision.

Section 8 Parts Lists and Assembly Drawings


8.2 Parts cross reference tables

The parts cross-reference tables are provided as a guide to help identify parts which are common between the Standard Pipe Cutter and the Pipe Cutter with Knife Return System.

Please refer to RB01-A-082-A05 (Part No. 0520-1000) for item / part number references for knife return system.

For standard assembly see RB01-A-082-A04 (Part No. 0520-0000) for item / part number reference.

Item Common Parts found both in standard assembly and knife

return (See drawing No.s above)

Unique parts to Knife Return System (RB01-A-082-A05)

1 v - 2 v - 3 v - 4 v - 5 v - 6 v - 7 v - 8 v - 9 v - 10 v - 11 v - 12 v - 13 v - 14 v - 15 v - 16 v - 17 v - 18 v - 19 v - 20 v - 21 v - 22 v - 23 v - 24 - v 25 - v 26 - v 27 - v 28 - v 29 # v

(# Body will require to be swapped out with Standard body in Standard Assembly)


Section 9 9.0 Appendix

9.1 Flotel Settings

Unless specifically requested, the Flotel for the 8 " Pipe Cutter is to be set to the maximum knife opening . This will give the following Knife Arm Openings/Pressure Drop:

Knife Arm Opening Size (Maximum Diameter

of Cut)

Casing or Conductor

Size

Knife Arm Opening, at

Pressure Drop

Dressed Knife Arm Length, from CL Hinge Pin Hole

Undressed Knife Arm Length, from CL Hinge Pin Hole

10 " 9 ? " 10.50" 2.625" 2.313" 11 " 10 " 11.50" 3.125" 2.813" 14 " 13 ? 13.125" 4.625" 4.313"

Note: Other Knife Arm Opening Sizes may be provided. Refer to RB01-A-082-T10, page 31. Contact Engineering for confirmation of the Knife Arm Opening diameter, corresponding to the Pressure Drop.

This Knife Arm Opening diameter corresponding to the Pressure Drop, has been determined where the piston has travelled 0.167" along the bore beyond the Flotel stop position.

Section 9 Appendix


9.2 Welding of the [06] Flotel Spring to the [07] Flotel Spring Carrier

If new Flotel parts are used when assembling the 8 " Pipe Cutter, these parts must be welded, prior to fitting.

9.2.1 Reference Weld procedure : ES21., Repair Welding of AISI 41XX and SAE 8620 Steels.

Note: The stress relieving must be omitted.

9.2.2 Welding Consumables : Oerlikon Tenacito 100

9.2.3 Ensure both components are free of debris and grease.

9.2.4 Mount the [06] Flotel Spring (0530-0027) over the [07] Flotel Spring Carrier (0520-0025). Rotate the spring so maximum access is available for the [08] Flotel Spring Carrier Set Screws (0520-0020) between the spirals.

9.2.5 Pre-Heat to 175C

9.2.6 Stitch weld with 1" long weld runs, in 3 places, 180 apart.

9.2.7 Cool slowly in a pit (vermiculite/micafil) away from draughts.

9.2.8 When cool, inspect for cracks. Black Magnetic Ink Inspection.

Section 9 Appendix


9.3 Drawings

Figure 11 RB01-A-082-A05 8 " Pipe Cutter with Knife Return Assembly

Section 9 Appendix


Figure 12 RB01-A-082-A08 8 " Pipe Cutter with Knife Return Knife Selection Assembly

Section 9 Appendix


Figure 13 RB01-A-082-T07 8 " Pipe Cutter with Knife Return Technical Illustration

Section 9 Appendix


Figure 14 RB01-A-082-T10 8 " Pipe Cutter Knife / Casing Sizes

Section 9 Appendix


Figure 15 RB01-A-117-T10 Pipe Cutter Body Inspection

Section 9 Appendix


Figure 16 RB01-A-082-T12 Knife Inspection Drawing

Pipe Cutter With KnifeES21[1].39808

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Transcript of Pipe Cutter With KnifeES21[1].39808