VR Vetco Gray Plug Operation Manual [PDF]

Zitiervorschau

VR PLUGS

Polish Rod Thread

Hex and O-ring

ISO VR Pulling and Setting Tool in different Hex Sizes (H70179-863, -864, -865) Note: Stinger # 33177willwork in ISO Tool

Stinger

Gray Style with Stinger Note: This will work on ISO VR Plugs

REVISION C

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VR PLUGS

12. When VR Setting and Pulling Tool Adapter contacts Plug, do not force Crank Handle further. 13. With a 36" pipe wrench or with chain tongs, attempt to rotate Tong Stem slightly. If Tong Stem is tight, then the hex of the VR Setting and Pulling Tool Adapter has fully engaged the Plug.

14.

15.

16. 17.

If Tong Stem is free, rotate very slowly, while at the same time keeping light clockwise pressure on the Crank Handle until the hex in the VR Setting and Pulling Tool Adapter is felt to engage the hex on the Plug. At this point, stop rotation of Tong Stem and advance VR Setting and Pulling Tool Adapter further to full engagement by rotating Crank Handle approximately six (6) additional turns to the right (clockwise). As Stem Adapter makes up fully on Plug Hex, the Stinger within the Stem Adapter should force open the check valve within the Plug, thus equalizing the pressure between the head and the Valve Removal Tool. The operator may hear or feel this equalization take place. He may further check to ensure equalization by opening the Bleeder Valve. If pressure equalization does not take place at this stage, then pressure should be applied to the Valve Removal Tool through the Bleeder Valve by means of an external pump until the pressure within the tool balances the pressure within the Head. With the Plug engaged and the pressure equalized, rotate Tong Stem counterclockwise (to the left) and at the same time rotate the Crank Handle counterclockwise, thus unscrewing and backing out the threaded Plug. Keep the Crank Handle moving free at all times. If for any reason the Handle tightens, stop and reverse movement of Tong Stem immediately or else severe damage will be done to the tool or the VR threads. The Traveling Stem may be kept free and yet in proper engagement with the Plug by moving the Crank Handle back and forth about one-eighth turn, first clockwise, then counterclockwise, while rotating it overall in a general counterclockwise direction. Approximately eleven (11) turns of the Tong Stem will completely free the plug engagement with the outlet threads. At this time, the Plug may be fully retracted by turning the Crank Handle to maximum counterclockwise position slowly as not to drop the plug or to allow it to be pulled off by valve grease. Close valve.

18. Advance tool until Plug is stopped by closed valve. Count turns. This should require approximately twenty-five (25) turns less than in Step 11. This is a pre-cautionary step to enable the operator to be sure that he has fully removed the Plug and has it held in the VR Setting and Pulling Tool Adapter. 19. Remove VR tool and the reinstalled valve is ready for use.

REVISION C

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VR PLUGS

20. Remove the valve from the head, leaving the Valve Removal Plug exposed. 21. Do the valve repair or replacement at this time or install a flange and VR cap.

1. 2. 3.

4.

THE VALVE REINSTALLATION PROCEDURE Remove the Protector Hub, Flange or Thread Protector from the outlet on to which a valve is to be reinstalled. Examine the outlet connection to ensure that sealing surfaces are in good condition. If the outlet has become damaged or badly corroded, satisfactory valve reinstallation may not be possible. Measure and note the distance that the end of the Plug projects beyond the face of the outlet on to which a valve is to be reinstalled. The valve to be reinstalled must have enough room to allow both the VR Pulling and Setting Tool and VR Plug into the bore with the Gate closed. Assemble the valve on the exposed outlet. If the condition of the sealing surfaces of the outlet is in doubt, the connection can be tested at this time by capping off the open end and applying pressure into the open valve. NOTE:

If the VR Plug is an older style, ones with a ½" NPT box and dart, user may have to install a flush type hex plug in the VR Plug to test connection. If this is the case, the stinger must be removed from VR Setting and Pulling Tool Adapter. 5.

7.

Measure and note Dimension A when the valve Removal Traveling Stem is fully retracted (Crank Handle rotated to the maximum counterclockwise position). Measure valve Dimension B to be sure that one-half of it (Dimension C) equals or exceeds Dimension A. The Traveling Stem of the Valve Removal Tool extends at the rate of 1" for each 6 revolutions of the Crank Handle. Therefore, by multiplying the required travel determined in Step 7 by six (6), we obtain the number of revolutions of the Crank Handle, which will be required to advance the VR Setting and Pulling Tool Adapter to the point of contact with the Plug. Assemble Valve Removal Tool on to open end of the valve being reinstalled.

8.

Close valve.

6.

9.

Extend Traveling Stem by rotating Crank Handle clockwise until VR Setting and Pulling Tool Adapter makes contact with closed valve plug or gate. Count the number of turns of the Crank Handle to reach this point. Back off slightly (turn Crank Handle counterclockwise approximately one turn) to free valve. 10. Open valve. 11. Continue to advance Traveling Stem toward engagement with Plug. Contact with Plug should be close when Crank Handle has been rotated clockwise the previously determined number of turns.

REVISION C

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VR PLUGS

NOTE: Dimension C, must be more than Dimension A, or else Plug will hit the valve gate when the tool is assembled onto the valve. This is an approximation of (slightly less than) the axial travel required to advance the Plug into position to engage the first thread in the head Outlet. This required travel must not exceed the 16" maximum travel of the valve removal tool if using the 16" VR Tool. 6.

7.

The Gray Valve Removal Tool extends and retracts axially at the rate of 1" for each six (6) rotations of the Crank Handle. Therefore, by multiplying the dimensions to be advanced by six (6), we have the approximate number of turns which will be required to engage the Plug in the starting thread. Always determine these dimensions and keep track of the number of turns when advancing or retracting the Traveling Stem. This enables user to always know the position of the Plug. Assemble the Valve Removal Tool with Plug in place on the valve to be removed.

8.

Close Bleeder Valve on Valve Removal Tool.

9.

Turn the Crank Handle clockwise, advancing the Valve Removal Plug until it reaches the gate. Keep track of the number of turns. Back off Plug, (turn Crank Handle counterclockwise about 1 turn). Open the valve (slowly at first to equalize pressure) to full opening position. The pressure indication can be noted through the Bleeder Valve. Again, turn Crank Handle clockwise to further advance Plug toward threads in outlet. When Plug reaches threads, do not force into engagement. Eleven to fifteen turns of the Tong Stem will be required to fully set the Valve Removal Plug. A chalk mark on Tong Stem will aid in keeping count of turns. Use a 36" pipe wrench or chain tongs and turn the Tong Stem slowly clockwise ( to the right) and at the same time rotate the Crank Handle in a clockwise direction, so as to maintain a slight pressure on the Valve Removal Plug while it feeds into the outlet threads. Keep Traveling Stem free at all times. This may be accomplished by turning Handle back and forth, slightly, while the Tong Stem is being rotated. When the Plug is set, the Tong Stem will tighten. Enough torque should be applied to the Tong Stem to fully tighten the tapered plug thread. Rotate Crank Handle counterclockwise six (6) turns to back VR Setting and Pulling Tool Adapter off of the Valve Removal Plug. Do Not Rotate Tong Stem. Open Bleeder Valve to relieve pressure from the Valve Removal Tool.

10. 11. 12.

13. 14. 15. 16.

17. Pressure within the tool should dissipate rapidly if the Plug is firmly set and not leaking. If, after a few moments, pressure continues to be indicated within the tool, advance Adapter again into engagement with Plug and further tighten the Plug by applying greater torque to Tong Stem. Then back off VR Setting and Pulling Tool Adapter and check for leaks once again. 18. Rotate Crank Handle to the left (counterclockwise) to retract the Traveling Stem. 19. Remove the Valve Removal Tool from the valve

REVISION C

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VR PLUGS

VALVE REMOVAL AND VALVE REINSTALLATION

Valve (B) VR Tool

VR Plug and Adapter (A)

Crank Handle

Valve Removal Plugging Tool Rigged Up on a Tubing Spool Outlet with VR Plug Extended

Valve Removal Procedure 1. Assemble the necessary adapters on to the Valve Removal Tool. 2.

3.

With the Valve Removal Plug in the VR Pulling and Setting Tool socket, retract the Traveling Stem by rotating the Crank Handle to the maximum counterclockwise position. Measure the distance from the end of the Plug extends out from the face of the tool Hub Adapter (Dimension A). Measure the face-to-face dimension of the valve to be removed (Dimension B).

4.

Minus one-half of the total length of the valve (Dimension C).

5.

Subtract Dimension A from valve length Dimension B.

REVISION C

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VR PLUGS

3. 4. 5. 6.

Open the valve and insert the VR Pulling and Setting Tool and polish rod through the valve. Once contact with the VR Plug has occurred, rotate the adapter slowly until you can feel the internal hex slide onto the hex of the VR Plug. Drive the VR Pulling and Setting Tool all the way on the hex of the VR Plug. The o-ring in the tool will cause drag at this point. Using a pipe wrench, rotate the polish rod counterclockwise slowly. Checking for pressure behind the plug after a few turns by presence of high torque or pressure venting. CAUTION:

Do not stand in front of polish rod or VR Plug when pulling or installing VR Plugs. 7.

Release the VR Plug from the threads in the head and pull out of valve body slowly.

8.

Close valve and continue customer operations.

Valve Reinstallation Nipple and Plug For casing outlets which are threaded, the Valve Reinstallation Nipple and Plug are available, but these items should be installed when head is installed. The nipple is threaded with the male threads on both ends and it is threaded internally with a right hand Acme thread profile for the VR Plug. 1. To remove a threaded outlet valve with well control, it is necessary to set the VR Plug in the threaded nipple which is installed between the casing outlet and the valve. 2. If the well has zero pressure, then the VR Plug may be set manually by opening the gate valve and inserting the VR Plug through the valve and into the profile of the nipple. 3. Inspect that the VR Plug is in the correct thread profile (not crossed) and rotate clockwise while holding a backup on the VR Nipple with a pipe wrench. 4. Tighten the VR Plug until it does not leak. One man 24" tight should be enough. 5.

Valve may now be replaced or repaired.

6.

After valve is replaced, follow the above steps in reverse order to pull VR Plug.

REVISION C

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VR PLUGS

ROUTINE OPERATIONS 1.

PRE-OPERATIONAL CHECKS Check to ensure that all equipment that may be needed is on location.

2.

Verify that the VR Plug is the correct plug for the outlet into which it will be set.

CAUTION: All new wellheads will be marked near the outlet as to what type VR thread is in the outlet. If no marking is found, then you must check well files and be careful. 3.

Verify that the correct VR Pulling and Setting Tool is available and fits the VR Plug.

4.

Make sure the adapter polish rod hex will make up on the extension.

5.

Make sure the VR Pulling and Setting Tool has a fresh o-ring and that it fits both tool and plug. If a VR tool (VR Lubricator) is to be used, make sure all adapters, ring gaskets and studs and nuts are on location.

6.

Installation of a Valve Removal Plug - Manual Method 1. Snap the VR Pulling and Setting Tool onto the VR Plug. 2. 3.

Attach the VR Pulling and Setting Tool and plug to a polish rod extension long enough to reach through the valve. Open outlet valve or valves and bleed all pressure from the casing.

4.

Insert the plug into the outlet.

5.

Rotate the extension clockwise until the threads snug up.

6.

Place a 24" pipe wrench on the extension and tighten with one man.

7.

Retrieve the extension and adapter with a hard tug on at the extension.

Valve Removal Plug Retrieval - Manual Method 1. The plug may be retrieved by reversing the above operation. 2.

Extreme caution should be used to ensure no pressure has built up behind the plug since it was installed. NOTE:

Only VR Plugs with a dart can be checked for pressure underneath the plug. If unsure or pressure is noted, then a VR Tool must be used.

REVISION C

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VR PLUGS VR THREAD AND HEX CHART TYPE

PRESSURE RATING

For older style reduced bore valves with a 1-3/4" bore

Gray Tool Co.

15M, 20M and 30,000 PSI

Reinstallation Nipple 2000 - 3000 PSI

SIZE

HEX SIZE (ACROSS FLATS)

THREAD

1-1/2"

1-1/16"

1" E.U. 10 Rd

1-13/16" and 2-1/16"

1-1/4"

1.660" OD EU Sharp

2-9/16"

1-1/2"

2-3/8" OD Non Upset Sharp

3-1/16"

1-3/4"

2-7/8" OD Non Upset Sharp

4-1/16"

2-1/4"

3-1/2" OD Non Upset Sharp

1-13/16" and 2-1/16"

1-1/4"

1-3/4" 8 TPI Stub Acme

2-9/16"

1-1/4"

2-1/2" 8 TPI Stub Acme

3-1/16"

1-1/4"

3" 8 TPI Stub Acme

4-1/16"

1-1/4"

4" 8 TPI Stub Acme

2"

1-1/4"

1-1/2-8UN-2A

3"

1-1/4"

2-1/4-8UN-2A

2-1/16"

1-3/8"

1-1/2" LP

2-9/16"

1-3/8"

2" LP

3-1/16"

1-3/4"

2-1/2" LP

1-13/16"

1-1/8"

1-1/4" LP

2-1/16"

1-1/8"

1-1/4" LP

1-13/16"

1-1/4"

1-1/4" LP

2-1/16"

1-1/4"

1-1/2" LP

2-9/16"

1-1/4"

2" LP

3-1/16" and 3-1/8"

1-1/4"

3" LP

7-1/16"

1-1/4"

6" Nom H BPV

2-1/16"

1-1/4"

1-1/4" LP

1-13/16"

1-1/4"

1-1/4" LP

2-1/16"

1-1/4"

1.900 OD Non Upset Sharp

2-9/16"

1-1/4"

2-3/8" OD Non Upset Sharp

3-1/16"

1-1/4"

2-7/8" OD Non Upset Sharp

4-1/16"

1-1/4"

3-1/2" OD Non Upset Sharp

1-13/16"

1-1/4"

1-3/4" 6 TPI Stub Acme

2-1/16"

1-1/4"

2" 6 TPI Stub Acme

2-9/16"

1-1/4"

2-1/2" 6 TPI Stub Acme

3-1/16"

1-1/4"

3" 6 TPI Stub Acme

2 - 5,000 PSI

FIP 10,000 and 15,000 PSI

2,000 - 10,000 PSI Walker Steel

Reinstallation Nipple 2000 - 3000 PSI

2000 - 10,000 PSI

ISO 10423

15,000 and 20,000 PSI

REVISION C

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VR PLUGS

SPECIFICATIONS See following charts. VR Plugs should never have an impact wrench used to install into a head. The low pressure VR threads (10,000 psi and below) are all some form of API tapered tubing or API line pipe type of thread. Per API these type of threads require the use of some form of thread compound on the threads to make sure that they make up and seal properly. In the field when a VR plug is being installed thru a valve bore into the side of a head we need to use a thread compound on the VR plug thread. This can be Never-Seez (regular grade), Liquid O-ring Compound 104 (Thread Sealant) or any other API RP5A3 or API Bulletin 5A2 (obsolete) type of compound. When installing a VR plug in the field thru a valve, Teflon tape should not be used because it is possible to loose some of the tape before getting the VR plug into the thread. Teflon tape is acceptable to be used if you are able to “hand install” the VR plug into the thread (IE. this means you do not have a valve on the side of the head and you can see what you are doing). When using Teflon tape the number of wraps of Teflon tape needs to be limited to a max of three wraps. If too many wraps of Teflon tape are applied to the threads, then the VR plug will not make up to the proper thread engagement and this could limit its working pressure rating.

Gray Type VR Plug w/ Dart

High Pressure VR Plug w/ Dart

VR Nipple

VR Nipple and Plug

REVISION C

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VR PLUGS ADAPTER SIZE CROSS REFERENCE TYPE

SIZE

VR PLUG (REF ONLY)

ADAPTER HEX SIZE

ADAPTER #

1-13/16"

32601

1-1/4"

33173*

2-1/16" 10M and B-20 2-1/16" w/ 1-3/4" Bore

32600 (A)(B)

1-1/16"

33172*

2-3/8" for 2-9/16" Valves

32603 (A)

1-1/2"

33174*

2-7/8" for 3" Valves

32605 (A)

1-3/4"

33379*

3-1/2" for 4" Valves (E-40)

32606 (A)

2-1/4"

33380*

1-13/16" 30M

H71132-1

1-1/4"

33173

2-1/2" 30M

H71132-2

1-1/2"

33174

4" 30M

950764

2-1/4"

33380

1-1/4"

Not Available

1-1/8"

H70179-863

1-1/2" and 2"

Not Available

1-1/4"

H70179-864

2-1/2"

Not Available

1-3/8"

H70179-865

Walker Steel

All

Not Available

1-1/4"

33173

ISO

All

1-1/4"

33173

Gray

Gray High Pressure

FIP

* Indicates the stinger may need to be used if the VR Plug is a check valve style (Stinger # 33177)

NOTE: (A) These are old style VR Plugs and are reference only. (B) Is for old style valves with a restricted bore. POLISH ROD EXTENSIONS

REVISION C

L

OD

STK. NO.

6

1.594

33191

8

1.594

33199

10

1.594

33377

12

1.594

33192

18

1.594

33193

30

1.594

33378

36

1.594

33300

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