ctrb_000248 IRBP Rev 13-12-2001

8/3/2019 ctrb_000248 IRBP Rev 13-12-2001

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Thru-Tubing

© 2001 WEATHERFORD ® . All Rights Reserved. Houston, TX USA • Ph 713/693-4000 • 800/257-3826

INFLATABLE PACKERS

COILED TUBING

INFLATABLE RETRIEVABLE BRIDGE PLUG

(IRBP)The Weatherford IRBP is a high performance inflatable bridge plug thatincorporates a high expansion inflatable element and a robust chassis forremedial bridge plug applications. The IRBP is a single set tool which must bereturned to the surface and redressed prior to using again.

Applications:The IRBP is suitable for stimulation and workover applications when a bridgeplug must pass through a restriction in the tubing or out into the casing. TheIRBP can be used in temporary or permanent applications. It can be used forisolation purposes such as wellhead change outs or perforated intervals, gravelpack screens, slotted liners and tubing/casing. The IRBP can be used tostimulate an upper perforated interval. An electric line deployed IRBP is available,see literature regarding the E-IRBP.

Features:• Incorporates Weatherford’s patent pending “Get A Grip”TMAnchoring

Technology• Equalization takes place inside and outside of the toolstring during retrieval• Can be equipped with the Weatherford Thermal Compensator for applications

requiring wide temperature variations• High performance inflation elements capable of 3-1 expansion and

temperatures in excess of 300° F in some applications• Straight pull release

Specification Guide:

Coiled Tubing

Inflatable Retrievable

Bridge Plug (IRBP)

TOOLO.D.

in / mm

OVERALLLENGTH

in / mm

STANDARDSEAL LENGTHOF INFLATION

ELEMENTin / mm

MAXIMUMCASING

SIZEin / mm

ASSEMBLYNUMBER

1.69042,93

86.202189,48

44.501130,30

5127,00

TT3550169002

1.81346,05

86.202189,48

44.501130,30

5-1/2139,70

TT3550181002

2.13054,10

86.202189,48

44.501130,30

7177,80

TT3550213002

2.43861,93

86.202189,48

44.501130,30

7-5/8193,68

TT3550244002

2.50063,50

86.202189,48

44.501130,30

7-5/8193,68

TT3550250002

2.87573,03

86.202189,48

44.501130,30

7-5/8193,68

TT3550288002

3.37585,73

86.202189,48

44.501130,30

9-5/8244,48

TT3550338002

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8/3/2019 ctrb_000248 IRBP Rev 13-12-2001


© 2001 WEATHERFORD ® . All Rights Reserved. This document is the confidential property of Weatherford International, Inc. and may not be reproduced in any way,either whole or in part, or distributed without the expressed written authorization of Weatherford International, Inc.

UNIT NO. IRBP - INTERIM

PART NO. TT3550169002 thru TT3550338002

REVISION 12/13/01

PAGE 1 OF 25

COILED TUBINGINFLATABLE RETRIEVABLE BRIDGE PLUG (IRBP)

The Weatherford IRBP is a high performance inflatable bridge plug that incorporates a

high expansion inflatable element and a robust chassis for remedial bridge plugapplications. The IRBP is a single set tool which must be returned to the surface andredressed prior to using again.

The IRBP is suitable for stimulation and workover applications when a bridge plug mustpass through a restriction in the tubing or out into the casing. The IRBP can be used intemporary or permanent applications. It can be used for isolation purposes such aswellhead change outs or perforated intervals, gravel pack screens, slotted liners andtubing/casing. The IRBP can be used to stimulate an upper perforated interval. An electricline deployed IRBP is available, see literature regarding the E-IRBP.

SPECIFICATION GUIDE

REQUIREMENTSIn addition to information contained in this tech unit, the following tools are required:

Installation Tools, Fishneck Nut (TT3550213235)#2 Adaptor (TT3170169296)Suitable Bench VisePipe Wrenches (18”)Lubricant - Lubriplate™ #930 AA or equivalent

Teflon™ TapeManual or Pneumatic Pump (capable of pumping water)Scotch Brite™ Scouring Pad (for use inside pipe wrench jaws to prevent scarring)

50/50 Glycol/Water mixture and Glycol Pump

TOOLO.D.

in / mm

OVERALLLENGTH

in / mm

STANDARD

SEAL LENGTHOF INFLATION

ELEMENTin / mm

MAXIMUMCASING

SIZEin / mm

ASSEMBLYNUMBER

1.69042,93

86.202189,48

44.501130,30

5127,00

TT3550169002

1.81346,05

86.202189,48

44.501130,30

5-1/2139,70

TT3550181002

2.13054,10

86.202189,48

44.501130,30

7177,80

TT3550213002

2.43861,93

86.202189,48

44.501130,30

7-5/8193,68

TT3550244002

2.50063,50

86.202189,48

44.501130,30

7-5/8193,68

TT3550250002

2.87573,03 86.202189,48 44.501130,30 7-5/8193,68 TT3550288002

3.37585,73

86.202189,48

44.501130,30

9-5/8244,48

TT3550338002

Coiled Tubing

Inflatable Retrievable

Bridge Plug (IRBP)


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DISASSEMBLYThoroughly clean all parts and inspect for damage.Replace parts as needed. To minimize corrosiondamage, coat all parts with oil.

1. Place the IRBP in a vise at the top connectionon the element and support the free end with astand.

2. Remove the Set Screw (35) from the Bull Nose (32).

DIAGRAM 1

DIAGRAM 3

DIAGRAM 4

DIAGRAM 5

DIAGRAM 6

3. Unscrew the Bull Nose from the end of theMandrel Sub-assembly (22). Unscrew the PlugCatcher (34) from the Bull Nose. Remove theShear-Out Piston from the Plug Catcher.Remove and discard sheared Dogs from theShear-Out Piston.

4. Unscrew and discard the remaining ShearScrews (35) from the body of the Bull Nose.

5. Remove the Anchor Cap (27) and Anchor Plate(26) from the Mandrel.

6. Remove the Severing Tension Bolts (28) from theAnchor Plate and the Slide Sub (24).

7. Using a back-up on the lower connection of theInflation Element (23) break the Slide Sub free.

NOTE: It may be easier to remove the Slide Sub ifLubriplate™ is applied to the Mandrel below theSlide Sub before breaking. This reduces thefriction from the three O-rings in the Slide Sub.

8. Unscrew the Inflation Element from the BottomSub (16).

9. Slide the Inflation Element off of the Mandrel andset it aside.

DIAGRAM 2


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DIAGRAM 9

DIAGRAM 12

10. Remove the Back-Up Ring (21) from over theMandrel and set aside.

11. Remove Set Screw (29) from the Bottom Sub.

12. Unscrew the Mandrel from the Bottom Sub byplacing a wrench just below the bottom of the

welded sleeve on the Mandrel. Buff out any ridgesor burrs created during removal of the Mandrel.13. Using the Fishneck Nut Removal Tool

(TT3550213235) remove the Fishneck Nuts (17)from the bottom of the Equalizing Fishneck (1).

14. Place the Control Head of the IRBP in a vise atthe Housing (12).

15. Remove the Bottom Sub (16) from the Housing

and set aside.

16. Remove the E-Ring (2) above the EqualizingSleeve (5) and allow the Spring (6) to expand toits unloaded length.

17. Unscrew the Poppet Seat (7) from the Housing.Remove the Poppet Pedestal (13), Shear Ring(15) and Spring (6) from the EqualizingFishneck.

DIAGRAM 7

DIAGRAM 8

DIAGRAM 10

DIAGRAM 11


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18. Unscrew the Shear Screws (8) from the PoppetSeat.

19. Place the Poppet Seat in a vise and remove theEqualizing Fishneck from the Poppet Seat.Remove and discard the sheared Dogs from the

mill spots on the Equalizing Fishneck.20. Remove the Poppet Sub-assembly (10) from

the I.D. of the Poppet Seat.21. Remove the Spring from the Equalizing

Fishneck.

22. Remove Equalizing Sleeve from the EqualizingFishneck.

ASSEMBLY

Gather all parts per parts list. Inspect all threads andsealing surfaces to ensure all parts are free ofdamage, paying special attention to areas nearsealing members. Repair or replace as necessary.

Anti-galling compound should be used on allthreads. Downhole grease, such as Lubriplate™should be used on all O-rings. To avoid damage toparts, use a soft jaw vise and strap wrenches whentightening connections.

1. Install O-rings to all parts except those on theEqualizing Fishneck (1).

2. Install four O-rings (4) into top four grooves atthe top of the Fishneck.

DIAGRAM 13

23. Remove all O-rings from the disassembled partsand discard.

24. Wash grease and debris from parts and dry.25. Inspect parts for damage and replace as

necessary.26. Apply a light coat of corrosion inhibitor, such as

WD-40™ or oil to the parts and storeaccordingly.

3. Apply grease to the inside of the EqualizingSleeve (5).

DIAGRAM 14

DIAGRAM 1

DIAGRAM 2


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4. Apply Lubriplate™ to Fishneck. Insert EqualizingSleeve over end of Fishneck. Slide the EqualizingSleeve over O-rings until it shoulders against theFishneck profile nut at the top of the Fishneck.

6. Inspect inside lips of the Poppet Seat (7) forburrs; remove and clean if necessary. Apply alight layer of grease to the I.D. of the PoppetSeat.

NOTE: Check specific job procedure for properquantity of screws. Number of Shear Screwsdetermines the pull load required to deflate theIRBP for retrieval; each screw requires a shearforce of 1,000 lb.

5. Slip a Spring (6) over the Equalizing Fishnecksub-assembly and under the skirt of theEqualizing Sleeve, slipping it into position until itstops.

DIAGRAM 4

DIAGRAM 5DIAGRAM 3

7. Adjust Poppet Seat (7) until shear pin groove in theEqualizing Fishneck (1) aligns with tapped holes inPoppet Seat. Install appropriate number of shearscrews per job requirements.

NOTE: Take care to prevent O-ring damage; ifdamage is suspected, disassemble and redress.

DIAGRAM 6


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10. Slide the Shear Ring (15) over the PoppetPedestal (13) and align holes, then secure withtwo Shear Screws (14).

11. Clamp the Housing (12) in a vise with the deep

end facing up. Insert the Poppet Pedestal andShear Ring sub-assembly into the Housing,Shear Ring end first, until the Shear Ringshoulders inside. The long lip of the PoppetPedestal should be pointing up, as shown in theDiagram 11 below.

DIAGRAM 9

8. Slide the Spring (6) and Equalizing Sleeve down,compress the Spring. Install E-ring (2) into theexposed groove.

DIAGRAM 7DIAGRAM 10

DIAGRAM 8

9. Install the last two O-rings (4) onto the bottom of

the Equalizing Fishneck and apply greaseto the exposed O-rings. Slide the PoppetSub-assembly (10), molded-end first, over theend of the Equalizing Fishneck and into contactwith the Poppet Seat, ensuring that the internalO-rings in the Poppet slide over the O-rings onthe Equalizing Fishneck and completely engagethe seat.

NOTE: At this time, inspect O-rings for anydamage, and redress if necessary.

DIAGRAM 11


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REVISION 12/13/01

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12. Install the bottom end of the Equalizing Fishneck(1) into the Housing (12) and through the I.D. ofthe Poppet Pedestal (13), engage threads, andmake up Poppet Seat to (7) Housing until itshoulders.

NOTE: Take care to listen during make up toensure the small Shear Screws do NOT shear.

To ensure the integrity of the Shear Screws,unscrew the Poppet Seat from the Housing, andremove the Poppet Pedestal and Shear Ringsub-assembly for inspection. Sheared screwsmust be replaced. Reassemble, ensuring thePoppet is completely shouldered in the PoppetSeat, and that component part numbers matchthe parts list according to Page 24.

14. Install the Bottom Sub (16) over the exposed endof the Equalizing Fishneck and thread it onto thebottom of the Housing. The smaller I.D. end ofthe Bottom Sub is positioned over the Fishneckand engages the two O-rings (4), making it

necessary to compress the Spring to start andmake up the Bottom Sub.

DIAGRAM 12

13. Remove the assembly from the vise, invert, andre-clamp snugly on the middle of the Housing(12). Slide a Spring (6) over the exposed end ofthe Equalizing Fishneck, through the inside ofthe Poppet Pedestal until it contacts the Poppet.

DIAGRAM 13

DIAGRAM 15

DIAGRAM 17

DIAGRAM 16

DIAGRAM 14

15. Using the Installation Tool (TT3550213235) andtwo Fishneck Nuts (17), slide a nut over the endof the Fishneck, slots down, or exposed, andthread the nut down until it shoulders.

NOTE: Do NOT use a wrench, hand tighten only.

DIAGRAM 18


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21. Make up the Inflation Element to the Bottom Sub(16). Tighten securely with a wrench.

CAUTION: Do NOT allow the element I.D. to dragon the Mandrel.

18. Install the Set Screw (20) through the side of theBottom Sub (16), and tighten against the top ofthe Mandrel sub-assembly.

DIAGRAM 21

DIAGRAM 23

DIAGRAM 22

16. Slide the second nut, slots down, over the end ofthe Fishneck and again thread the nut onto theFishneck until it shoulders against the first nut.

17. After verifying that O-rings (18) are in place,remove this assembly from the vise, turn itsideways, and re-clamp on the middle of the

Housing (12). Take the Mandrel Sub-assembly(22) and thread the large end into the BottomSub, securing it tightly with a wrench.

19. Liberally coat the entire length of the MandrelSub-assembly with grease.

20. Insert the Grip Ring Back-up Ring (21) flushagainst the Grip Ring inside the Inflation Element(23). Position the Inflation Element so that theexposed straps are oriented properly (usually,

closest to the control head). Slide the InflationElement over the Mandrel Sub-assembly, takingcare NOT to damage the inside surface of therubber bladder.

DIAGRAM 19

DIAGRAM 20

DIAGRAM 24


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DIAGRAM 27

DIAGRAM 28

22. Install the Slide Sub (24) over the end of theMandrel, taking care not to damage the seals.

23. Engage the threads of the Inflation Element andtighten securely with a wrench.

NOTE: Do NOT twist the Inflation Element. Holdbackup on the end of the element connectionadjacent to the Slide Sub during tightening.

24. Slide the PLT Anchor Plate (26) over the end ofthe Mandrel and butt it up to the Slide Sub,securing it to the Slide Sub with two SeveringTension Bolts (28).

NOTE: Be careful NOT to twist the heads off ofthe Screws, and tighten them evenly to preventthe Anchor Plate from moving.

25. Slide the PLT Anchor Cap (27) over the end of theMandrel and PLT Anchor Plate (26).

26. Thread the Bull Nose (32) onto the end of theMandrel and secure in place using the Set Screw(29).

DIAGRAM 25

DIAGRAM 26

27. Install the #2 Parker Plug (25) into the side of the

Slide Sub (24).

NOTE: This plug will be removed later for testingand venting the Inflation Element.

28. Coat external surfaces of the Shear-Out Plug(33) and internal surfaces of the Bull Nose (32)with grease. Insert Shear-Out Plug, small endfirst, into the Bull Nose until it shoulders.

DIAGRAM 29


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REVISION 12/13/01

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DIAGRAM 30

DIAGRAM 31

29. To hold the Shear-Out Plug in place, install theproper number of Shear Screws (35) in the BullNose (32). Thread each screw down, then backoff approximately 1/8 turn.

NOTE: Each Screw shears at 275 psi; thus, fourscrews allow the IRBP to inflate to 1100 psibefore shearing out.

30. Make up the Shear-Out Plug Catcher (34) to theBull Nose (32), securing with a wrench. Positionyour hold on the Bull Nose to prevent twisting theMandrel or Inflation Element.

PURGING

Before running or testing any inflatable product, it isnecessary to purge the element of air and fill it withfluid. Without proper purging, an Inflation Element willbe catastrophically damaged when exposed to

external pressure, even at low pressures. Use thefollowing procedure to purge the packer of air:

1. Remove the #2 Parker Plug from the Slide Sub(24), and connect the #2 Parker Adaptor(TT3170169296) to the Slide Sub. Connect ahand pump filled with a 50/50 mixture of glycol/ water.

2. Pump into the Inflation Element unit it expandsslightly. Stop pumping and bleed the pressureback into the hand pump. Pump into the InflationElement again until it expands slightly, and thenbleed the internal pressure back into the hand

pump. Repeat this process until air is no longerheard, to flow into the pump.

CAUTION: The glycol/water mixture will squirtfrom the plug port when the pump is removed.Do NOT tilt the plug in such a way that additionalglycol/water can flow from the plug.

When the #2 Parker Plug is secure, the IRBP isready for field use. Measure the O.D. of the elementto ensure it is not partially inflated. If it is, bleed fluidfrom the #2 Parker Plug as necessary.


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PART NO. TT3550169002 thru TT3550338002

REVISION 12/13/01

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TESTING PROCEDUREThis test is to ensure that the Retrievable Bridge Plug can hold an internal inflate pressure without leakage, indicatingcorrect assembly with no damage to sealing elements.

Use a test scabbard for this procedure. A test scabbard is a 48” length of pipe with an I.D. that is no more than 1/8” largerthan the Inflation Element. The test scabbard will limit the expansion of the Inflation Element during the test.

CAUTION: If the element inflates excessively and takes a permanent set, during testing, it must be replaced.

1. Install Hydro Test Sub to Control Head of IRBP.

NOTE: Use Hydro Test Sub P/N: TT3010000R for IRBP sizes 1-11/16” thru 1-13/16” and P/N TT3009000R for IRBPsizes 2-1/8” thru 3-3/8”.

2. Slide Lower Housing (of Hydro Test Sub) over Poppet Seat with pin facing up.

3. Apply Lubriplate™ to I.D. of Upper Housing (of Hydro Test Sub) and O.D. of Equalizing Sleeve.

4. Insert both halves of Split Ring (of Hydro Test Sub) into O.D. groove near top of Poppet Seat.

5. Slide the Top Housing over top of the IRBP so it encloses the Split Ring.

6. Screw the Upper and Lower Housing (Hydro Test Sub together and tighten.

7. Slide the test scabbard over the Inflation Element.

8. Remove the #2 Parker Plug (15) from the side of the Slide Sub (24), and connect the #2 Adaptor (TT3170169296) in

its place.

9. Connect a pneumatic or manual high pressure pump, with pressure gauge, to the #2 Adaptor.

10. Pump water and inflate element to 300 psi and inspect for leaks.

11. Increase pressure to 500 psi, and inspect for any leakage.

12. Continue pumping, increasing pressure to 1000 psi, then hold momentarily before shutting off the pump. Pressure

should remain above 900 psi during the next 15 minutes.NOTE: Fluid leakage through the Mandrel indicates missing or damaged O-rings on the Equalizing Sleeve, requiringrepair.

13. If plug pressure remains above 900 psi and no leaks are visible, the plug may be de-pressurized and purged for fielduse. Bleed pressure from the plug and purge according to Purging Procedure.

NOTE: If leaks are visible and/or plug pressure dropped below 900 psi, reconnect the pump and maintain plugpressure at 1000 psi while locating the leak. Once the leak is found, bleed pressure from the Inflation Element,disassemble, and repair. After repair, reassemble the plug per this procedure and re-test.

PROCEDURE TO CONNECT THE XFLO SETTING TOOL TO THE IRBP

1. Unscrew the Set Screw from the Top Sub of the ‘XFLO’ Setting Tool.

2. Partially unscrew the Top Sub of the Setting Tool. Leave 2-3 threads engaged.

3. Place the IRBP in a vise with the opposite end supported with a stand.

4. Apply Lubriplate™ to the O-ring on the Equalizing Sleeve (5) of the IRBP.

5. Place the Setting Tool over the Fishneck (1) and push down against the Equalizing Sleeve to seat the collets in thegroove in the Poppet Seat (7).

6. Slide the sub-assembly in the vise so that the collet body of the Setting Tool can be clamped down.

7. Use a wrench to re-tighten the Top Sub of the Setting Tool. Replace Set Screw in the Top Sub.


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REVISION 12/13/01

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RUNNING PROCEDURES

1.0 INTRODUCTION

The following are the recommended general procedures for running a 1-11/16” – 3-3/8” Weatherford Inflatable

Retrievable Bridge Plug (IRBP) on coiled tubing in wellbore fluids. These procedures should be modified as necessaryto achieve optimum field results. If the IRBP is run and set in a gas environment, a different toolstring and runningprocedure should be used.

The toolstring shown in Figure 1 (Page 21) is the recommended configuration when running and setting an IRBP inwellbore fluids.

2.0 REQUIRED DOCUMENTS

Weatherford Hydraulic Disconnect, Assembly ProcedureWeatherford IRBP, Assembly ProcedureWeatherford ‘XFLO’ Setting Tool, Assembly ProcedureWeatherford Hydraulic Retrieval Tool (XHRT), Assembly Procedure

Weatherford Inflation Element (Model TT313) Differential Pressure Capability Chart

3.0 REQUIRED TOOLING

See individual tool requirementsStandard hand tools for string make up

4.0 RUNNING PROCEDURES

The condition of the Wellbore will determine the remainder of the operation. The Wellbore will fall into one of threecategories:

A. Well bore full to surface.

B. Well bore low fluid level.C. Wellbore dry gas.D. Stacking plugs in blank pipe.

The following procedure addresses Condition A: well bore full to surface with fluid.

1. Determine wellbore conditions to verify viability of the Inflation Element for each particular job, i.e. cross-flow,pressure above plug, pressure below plug, bleed down, etc.

NOTE: If any uncertainty exists over the viability of the plug, contact a Weatherford representative to discuss thespecific operation in greater detail.

2. Prior to loading out equipment, thoroughly inspect each toolstring component in accordance with the appropriate

equipment manual. Verify proper toolstring make up. Verify that all Pump-Down Balls will pass through tools whichreside above their mating seat. Use only non-magnetic Pump-Down Balls. Verify the dimensional conformance ofthe balls.

3. Determine the operational characteristics of the pump that will be used on the job. The ‘XFLO’ Setting Tool operatesat a lower flow rate than some pumps are capable of performing. See Table 1 (Page 19) for the operationalcharacteristics of the specific size 'XFLO' Setting Tool. If the pump operates higher than the operational rates of theSetting Tool, a squeeze manifold must be used on the job. A flow meter and pressure gage must be useddownstream of the squeeze manifold to determine the flow rates and pressures to the Setting Tool.


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4. Once on site, pump a sufficient volume of fluid through the CT reel to sweep debris from the tubing. Pump the largestball to be used in the operation through the tubing. Determine the pressure loss through the coil at the operationalflow rates of the Setting Tool.

NOTE: Scale/Debris in the CT may detrimentally affect the setting operation. If in doubt about the condition of

the coiled tubing it should be pickled or a pig pumped thru to sweep debris and/or scale out prior to RIH.

5. Make up the toolstring to the end of the CT using the sequence shown in Figure 1 (Page 21).6. Pull the toolstring up into the lubricator and test the lubricator per the operator’s requirements. Test the lubricator with

water/glycol mixture. Do not subject the IRBP to differential pressure or rapid pressure changes that couldinadvertently actuate a component in the toolstring.

NOTE: Run in the hole at a slow rate (75 feet per minute maximum RIH rate). Unless absolutely necessary do notwork the IRBP past tight spots. Do not slack off weight onto the IRBP prior to inflation.

7. Run the toolstring in the hole at a slow rate of speed (75 fpm maximum, unless otherwise specified).

NOTE: Do NOT pump into CT during RIH unless otherwise advised by a Weatherford Representative. However, do

not exceed 200 psi hydrostatic pressure above the well bore pressure to the IRBP during RIH to prevent prematureinflation of the IRBP.

8. Run to the end of the tubing. If a Tubing End Locator (TEL) is used, locate the end of tubing and correlate with E/LLogs. Determine the pick-up and run-in weight at the end of the tubing.

9. Run the IRBP to a location below the intended setting depth, while doing so, determine the run-in weight at the IRBPsetting depth. Do not slack-off weight onto the IRBP before inflation. Pick-up to the setting depth. Determine the pick-up weight at the setting depth.

10. Record surface pressure versus time and pump rate versus time on a chart recorder from this point in time until thesetting operation is completed.

11. Wait 30 - 60 minutes to allow the fluid in the CT to come up to the temperature of the wellbore fluid on the outside ofthe CT.

12. Pump into the CT at 1/4 bpm and allow the coiled tubing to fill to the surface. Use a squeeze manifold to lower pump

rates to the IRBP when necessary. When using a squeeze manifold install a flow meter and pressure gage downstream of the manifold.

13. Continue pumping, gradually increase flow rate to reach 500 psi, at the tool, for 10 - 15 minutes.14. Continue pumping and increase flow rate to reach 800 - 1000 psi, at the tool, for 10 - 15 minutes. Slack off 500 lb.

onto the IRBP and maintain slack off for the remainder of the inflation process.15. Continue pumping and increase flow rate to reach 1300 - 1500 psi, at the tool, for 10 - 15 minutes. Maintain slack off

on the IRBP for the remainder of the inflation process.16. Continue pumping and increase flow rate to reach 1500 - 1700 psi, at the tool for 10 - 15 minutes. Maintain slack off

on the IRBP for the remainder of the inflation process.17. Increase the flow rate to reach the setting pressure (1750 psi). At this pressure the Shear-Out Plug on the bottom of

the IRBP is actuated, completing the inflation of the IRBP. When the IRBP is set the pressure drop of 400-800 psiwill be noticeable at the surface.

18. Stop pumping and slack off 1000 lb. at the top of the plug. Resume pumping at last flow rate. Slowly pick up off of

the IRBP. Monitor pick-up weight to determine that the Setting Tool is free of the IRBP. Pick-up weight, when freefrom the IRBP, will equal the pick-up weight determined in Step 9. If pick-up indicates the IRBP is still caught, stoppumping and slack off an additional 1000-2000 lb. onto IRBP. Resume pumping, increase flowrate 300 psi greaterthan previous flowrate and re-attempt pick up free from IRBP.

19. When free of the IRBP, POOH.

CAUTION: Do NOT set down to tag the top of the IRBP. This could re-latch the Setting Tool to the IRBP, or damagethe element.


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The following procedure addresses Condition B: wellbore full to some distance below surface.

1. Determine wellbore conditions to verify viability of the Inflation Element for each particular job, i.e. cross-flow, pressureabove plug, pressure below plug, bleed down, etc.


2. Prior to loading out equipment, thoroughly inspect each toolstring component in accordance with the appropriateequipment manual. Verify proper toolstring make up. Verify that all Pump-Down Balls will pass through tools whichreside above their mating seat. Use only non-magnetic Pump-Down Balls. Verify the dimensional conformance ofthe balls.

3. Determine the operational characteristics of the pump that will be used on the job. The 'XFLO' Setting Tool operates ata lower flow rate than some pumps are capable of performing. See Table 1 (Page 19) for the operationalcharacteristics of the specific size 'XFLO' Setting Tool. If the pump operates higher than the operational rates of theSetting Tool, a squeeze manifold must be used on the job. A flow meter and pressure gage must be used downstreamof the squeeze manifold to determine the flow rates and pressures to the Setting Tool.

4. Once on site, pump a sufficient volume of fluid through the CT reel to sweep debris from the tubing. Pump the largest

ball to be used in the operation through the tubing. Determine the pressure loss through the coil at the operationalflow rates of the Setting Tool.

NOTE: Scale/Debris in the CT may detrimentally affect the setting operation. If in doubt about the condition ofthe coiled tubing it should be pickled or a pig pumped thru to sweep debris and/or scale out prior to RIH.

NOTE: In low fluid wells displace an amount of fluid greater than or equal to the distance from surface to theknown fluid level in well back through the CT using nitrogen or open the reel valve while running in well so thatIRBP does not prematurely inflate.

5. Make up the toolstring to the end of the CT using the sequence shown in Figure 1 (Page 21).6. Pull the toolstring up into the lubricator and test the lubricator per the operator’s requirements. Test the lubricator with

water/glycol mixture. Do not subject the IRBP to differential pressure or rapid pressure changes that could

inadvertently actuate a component in the toolstring.


7. Run the toolstring in the hole at a slow rate of speed.8. Run to the end of the tubing. If a Tubing End Locator (TEL) is used, locate the end of tubing and correlate with E/L

Logs. Determine the pick-up and run-in weight at the end of the tubing.9. Run the IRBP to a location below the intended setting depth, while doing so, determine the run-in weight at the

IRBP setting depth. Do not slack-off weight onto the IRBP before inflation. Pick-up to the setting depth. Determinethe pick-up weight at the setting depth.

10. Record surface pressure versus time and pump rate versus time on a chart recorder from this point in time untilthe setting operation is completed.

11. Wait 30 - 60 minutes to allow the fluid in the CT to come up to the temperature of the wellbore fluid on the outsideof the CT.

12. Pump into the CT at 1/4 bpm and allow the coiled tubing to fill to a hydrostatic pressure equal to well borepressure at setting depth. Use a squeeze manifold to lower pump rates to the IRBP when necessary. When usinga squeeze manifold install a flow meter and pressure gage down stream of the manifold.

13. Continue pumping and increase hydrostatic pressure in coil to reach 500 psi over wellbore pressure, at the tool.Allow sufficient time for IRBP to inflate before proceeding.

14. Continue pumping and increase hydrostatic pressure in coil to reach 800 - 1000 psi over well bore pressure, at thetool. Slack off 500 lb. onto the IRBP and maintain slack off for the remainder of the inflation process. Allowsufficient time for the IRBP to inflate to this pressure before proceeding.


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15. Continue pumping and increase hydrostatic pressure in coil to reach 1300 - 1500 psi over well bore pressure, at thetool. Maintain slack off for the remainder of the inflation process. Allow sufficient time for the IRBP to inflate to thispressure before proceeding.

16. Continue pumping and increase hydrostatic pressure in coil to reach 1500 - 1700 psi over well bore pressure, at thetool. Maintain slack off for the remainder of the inflation process. Allow sufficient time for the IRBP to inflate to this

pressure before proceeding.17. Increase the hydrostatic pressure in the coil to reach 1750 - 1850 psi over wellbore pressure, at the tool. At this

pressure the Shear-Out Plug on the bottom of the IRBP will actuate, completing the inflation of the IRBP.

NOTE: When the IRBP is set in a partially full well bore the pressure drop will NOT be noticed at surface unless thecoiled tubing fills to surface prior to reaching setting pressure at setting depth.

18. Begin pumping and allow coiled tubing to fill to the surface. Increase flow rate to reach the Actuation FlowratePressure for the specific Circulation Nozzle used in the Setting Tool (See Table 1 on Page 19). Maintain slack offweight of 700-1000 lb. on the IRBP.

19. Slowly pick up off of the IRBP. Monitor pick-up weight to determine that the Setting Tool is free of the IRBP. Pick-upweight, when free from the IRBP, will equal the pick-up weight determined in Step 9. If pick-up indicates the IRBP isstill caught stop pumping and slack off 700-1000 lb. on the IRBP. Resume pumping and increase flow rate to ~200

psi higher and pick up off of IRBP.20. When free of the IRBP, POOH.

CAUTION: DO NOT set down to tag the top of the IRBP. This could re-latch the FAST to the IRBP, or damage theelement.

The following procedure addresses Condition C: Wellbore dry gas.



2. Prior to loading out equipment, thoroughly inspect each toolstring component in accordance with the appropriateequipment manual. Verify proper toolstring make up. Verify that all Pump-Down Balls will pass through tools whichreside above their mating seat. Use only non-magnetic Pump-Down Balls. Verify the dimensional conformance of theballs.

3. Determine the operational characteristics of the pump that will be used on the job. The 'XFLO' Setting Tool operatesat a lower flow rate than some pumps are capable of performing. See Table 1 (Page 20) for the operationalcharacteristics of the specific size 'XFLO' Setting Tool. If the pump operates higher than the operational rates of theSetting Tool, a squeeze manifold must be used on the job. A flow meter and pressure gage must be used downstreamof the squeeze manifold to determine the flow rates and pressures to the Setting Tool.

4. Once on site, pump a sufficient volume of fluid through the CT reel to sweep debris from the tubing. Pump the largestball to be used in the operation through the tubing. Determine the pressure loss through the coil at the operationalflow rates of the Setting Tool.

NOTE: If hydrostatic pressure in CT, at setting depth, exceeds SIWHP displace volume of fluid from thecoiled tubing equal to the hydrostatic head imbalance at the setting depth.


5. Make up the toolstring to the end of the CT using the sequence shown in Figure 1 (Page 21).


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6. Pull the toolstring up into the lubricator and test the lubricator per the operator’s requirements. Test the lubricator withwater/glycol mixture. Do not subject the IRBP to differential pressure or rapid pressure changes that couldinadvertently actuate a component in the toolstring.

NOTE: Run in the hole at a slow rate (75 feet per minute maximum RIH rate). Unless absolutely necessary do not

work the IRBP past tight spots. Do not slack off weight onto the IRBP prior to inflation.

7. Run the toolstring in the hole at a slow rate of speed. After RIH 300' open reel valve and allow coiled tubing todrain.

NOTE: Do NOT pump into CT during RIH unless otherwise advised by a Weatherford Representative. However,do not exceed 200 psi hydrostatic pressure above the well bore pressure to the IRBP during RIH to preventpremature inflation of the IRBP.

8. Run to the end of the tubing. If a Tubing End Locator (TEL) is used, locate the end of tubing and correlate with E/LLogs. Determine the pick-up and run-in weight at the end of the tubing.

9. Run the IRBP to a location below the intended setting depth, while doing so, determine the run-in weight at theIRBP setting depth. Do not slack-off weight onto the IRBP before inflation. Pick-up to the setting depth. Determine

the pick-up weight at the setting depth.10. Record surface pressure versus time and pump rate versus time on a chart recorder from this point in time until

the setting operation is completed.11. Wait 30 - 60 minutes to allow the fluid in the CT to come up to the temperature of the wellbore fluid on the outside

of the CT.12. Pump into coiled tubing at 1/4 bpm until fluid equal to 500 psi hydrostatic is displaced. Shut down pump, wait 10-

15 minutes for inflation.13. Resume pumping at 1/4 bpm until volume equal to 800-1000 psi hydrostatic pressure (in tubing) has been

displaced. Shut down pump, wait 10-15 minutes.

NOTE: Once inflation starts the fluid pumped into the coiled tubing will begin to fill the annulus above the IRBP. Thisis will have a balancing affect and is the reason more fluid must be displaced in subsequent steps. It is necessary toincrease the hydrostatic pressure this way to achieve setting of the IRBP.



16. Increase the hydrostatic pressure in the coil to reach 1750 - 1850 psi over wellbore pressure, at the tool. At thispressure the Shear-Out Plug on the bottom of the IRBP will actuate, completing the inflation of the IRBP.

NOTE: When the IRBP is set in a partially full well bore the pressure drop will NOT be noticed at surface unless thecoiled tubing fills to surface prior to reaching setting pressure at setting depth.

17. Begin pumping and allow coiled tubing to fill to the surface. Increase flow rate to reach the Actuation FlowratePressure for the specific Circulation Nozzle used in the Setting Tool (See Table 1 on Page 19). Maintain slack offweight of 700-1000 lb. on the IRBP.

18. Slowly pick up off of the IRBP. Monitor pick-up weight to determine if the Setting Tool is free of the IRBP. Pick-upweight, when free from the IRBP, will equal the pick-up weight determined in Step 9. If pick-up indicates the IRBP isstill caught stop pumping and slack off 700-1000 lb. at the IRBP. Resume pumping and increase flow rate to ~200 psihigher and pick up off of IRBP.


CAUTION: Do NOT set down to tag the top of the IRBP. This could re-latch the Setting Tool to the IRBP, or damagethe element.


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The following procedure addresses Condition D: Stacking plugs in blank pipe.


NOTE: If any uncertainty exists over the viabil ity of the plug, contact a Weatherford representative to discuss thespecific operation in greater detail.

2. Prior to loading out equipment, thoroughly inspect each toolstring component in accordance with the appropriateequipment manual. Verify proper toolstring make up. Verify that all Pump-Down Balls will pass through tools whichreside above their mating seat. Use only non-magnetic Pump-Down Balls. Verify the dimensional conformance of theballs.

3. Determine the operational characteristics of the pump that will be used on the job. The 'XFLO' Setting Tool operates ata lower flow rate than some pumps are capable of performing. See Table 1 (Page 20) for the operationalcharacteristics of the specific size 'XFLO' Setting Tool. If the pump operates higher than the operational rates of theSetting Tool, a squeeze manifold must be used on the job. A flow meter and pressure gage must be useddownstream of the squeeze manifold to determine the flow rates and pressures to the Setting Tool.

4. Once on site, pump a sufficient volume of fluid through the CT reel to sweep debris from the tubing. Then pump the

diverter sleeve actuation ball around the reel and record rate required. Using the orifice calculations spreadsheetdetermine the appropriate size circulation nozzle required to circulate the ball without exceeding the maximuminflation pressure flow rate. Pump the largest ball to be used in the operation through the tubing to ensure passagethrough the reel.


NOTE: In low fluid wells displace an amount of fluid greater than or equal to the distance from surface to theknown fluid level in well back through the CT using nitrogen or open the reel valve while running in well so thatIRBP does not prematurely inflate.

5. Make up the toolstring to the end of the CT using the sequence shown in Figure 1 (Page 21).

6. Pull the toolstring up into the lubricator and test the lubricator per the operator’s requirements. Test the lubricator withwater/glycol mixture. Do not subject the IRBP to differential pressure or rapid pressure changes that couldinadvertently actuate a component in the toolstring.


7. Run the toolstring in the hole at a slow rate of speed.8. Run to the end of the tubing. If a Tubing End Locator (TEL) is used, locate the end of tubing and correlate with E/L

Logs. Determine the pick-up and run-in weight at the end of the tubing.9. Run the IRBP to a location below the intended setting depth, while doing so, determine the run-in weight at the IRBP

setting depth. Do not slack-off weight onto the IRBP before inflation. Pick-up to the setting depth. Determine the pick-up weight at the setting depth.

10. Record surface pressure versus time and pump rate versus time on a chart recorder from this point in time until thesetting operation is completed.

11. Wait 30 - 60 minutes to allow the fluid in the CT to come up to the temperature of the wellbore fluid on the outside ofthe CT.

12. Pump into the CT at 1/4 bpm and allow the coiled tubing to fill to a hydrostatic pressure equal to well bore pressure atsetting depth. Use a squeeze manifold to lower pump rates to the IRBP when necessary. When using a squeezemanifold install a flow meter and pressure gage down stream of the manifold.

13. Continue pumping and increase hydrostatic pressure in coil to reach 500 psi over wellbore pressure, at the tool. Allowsufficient time for IRBP to inflate before proceeding.


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14. Continue pumping and increase hydrostatic pressure in coil to reach 800 - 1000 psi over well bore pressure, at thetool. Slack off 500 lb. onto the IRBP and maintain slack off for the remainder of the inflation process. Allow sufficienttime for the IRBP to inflate to this pressure before proceeding.

15. Continue pumping and increase hydrostatic pressure in coil to reach 1300 - 1500 psi over well bore pressure, at thetool. Maintain slack off for the remainder of the inflation process. Allow sufficient time for the IRBP to inflate to this

pressure before proceeding.16. Continue pumping and increase hydrostatic pressure in coil to reach 1500 - 1700 psi over well bore pressure, at the

tool. Maintain slack off for the remainder of the inflation process. Allow sufficient time for the IRBP to inflate to thispressure before proceeding.

17. Increase the hydrostatic pressure in the coil to reach 1750 - 1850 psi over wellbore pressure, at the tool. Whenstacking plugs in blank pipe the Shear-Out Plug on the bottom of the IRBP will not actuate.

18. Insert the trip ball in reel and circulate at rate not greater than the final inflation rate/pressure until the ball has clearedthe gooseneck. Stop pumping and allow the ball to gravitate to seat in the diverter sleeve. Begin pumping and allowcoiled tubing to fill to the surface. Increase flow rate to reach the Actuation Flowrate Pressure for the specificCirculation Nozzle used in the Setting Tool (See Table 1 on Page 20). Maintain slack off weight of 700-1000 lb. on theIRBP.

19. Slowly pick up off of the IRBP. Monitor pick-up weight to determine that the Setting Tool is free of the IRBP. Pick-upweight, when free from the IRBP, will equal the pick-up weight determined in Step 9. If pick-up indicates the IRBP is

still caught stop pumping and slack off 700-1000 lb. on the IRBP. Resume pumping and increase flow rate to ~200 psihigher and pick up off of IRBP.



BACK-UP RELEASE PROCEDURE

1. Insert the trip ball in reel and circulate at rate not greater than the final inflation rate/pressure until the ball has clearedthe gooseneck. Stop pumping and allow the ball to gravitate to seat in the diverter sleeve. Begin pumping and allowcoiled tubing to fill to the surface. Increase flow rate to reach the Actuation Flowrate Pressure for the specificCirculation Nozzle used in the Setting Tool (See Table 1 on Page 20). Maintain slack off weight of 700-1000 lb. on the

IRBP.2. Slowly pick up off of the IRBP. Monitor pick-up weight to determine that the Setting Tool is free of the IRBP. Pick-up

weight, when free from the IRBP, will equal the pick-up weight determined at run-in. If pick-up indicates the IRBP isstill caught stop pumping and slack off 700-1000 lb. on the IRBP. Resume pumping and increase flow rate to ~200 psihigher and pick up off of IRBP.




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RETRIEVAL PROCEDUREThe following are recommended general procedures for retrieving a 1-11/16” – 3-3/8” Weatherford IRBP. These proceduresshould be modified to achieve optimum field performance. Refer to the Weatherford Hydraulic Retrieval Tool (XHRT) techunit for additional information.

1. The toolstring shown in Figure 3 (Page 23) is the recommended configuration for retrieving a Weatherford IRBP.2. Prior to loading out equipment, thoroughly inspect each toolstring component in accordance with the appropriate

equipment manual. Verify proper toolstring make-up. Verify that all Pump-Down Balls will pass thru tools which resideabove their mating seat.

3. Examine all tools for service worthiness.4. Once on site, pump a sufficient volume of fluid through the CT reel to sweep debris from the tubing. Pump the largest

ball to be used in the operation thru the tubing.5. Make up the toolstring shown in Figure 3 (Page 23) to the end of the CT. Verify the ability to pump 2 - 3 bpm of fluid

thru the toolstring. Pull the toolstring up into the lubricator and test the lubricator per the operators requirements.6. Run the toolstring in the hole. Run to the end of the tubing. If a Tubing End Locator (TEL) is used, locate the end of

the tubing and correlate with E/L logs. Determine the pick-up and run-in weight at the end of the tubing.7. Run the toolstring to the top of the sand or the top of the IRBP, whichever is applicable. Determine the pick-up weight

and run-in weight at this depth. If there is no sand atop the IRBP proceed to the next step. Wash sand until the

bottom of the washover tools is two feet (2’) above the IRBP fishneck. Stop descent and circulate bottoms up untilthere is no suspended sand in the wellbore fluid.

8. Resume circulating fluid and washing sand and slowly descend toward the fishneck. Stop descent and circulatebottoms up when the washover tool is immediately above the IRBP fishneck. Continue washing sand and slowlydescend upon the IRBP. The pressure at the surface will increase when the Hydraulic Retrieval Tool swallows thefishneck. Slack off 2000 - 3000 lb. Stop circulating fluid once the fishneck is latched.

9. Pick up 1000 - 2000 lb. above the pick-up weight. This will verify that the Hydraulic Retrieval Tool is latched onto thefishneck.

CAUTION: Do NOT pick-up more than 3000 lb. above the pick-up weight. Doing so could prematurely deflate theIRBP.

10. Once the fishneck is latched, slack off 2000 lb. onto the IRBP and wait 10 - 15 minutes while the pressure equalizes

above and below the IRBP.11. Slowly pick-up on the toolstring. Pick up to 2000 lb. over the pick-up weight and hold for two (2) minutes.

Continue picking up in 2000 lb. increments and hold for two (2) minutes until the deflation shear load is achieved.12. Once the deflation shear load is achieved at the IRBP, the deflation mechanism will actuate. Upon actuation a

significant loss in weight will be seen at the surface.13. Wait thirty (30) minutes minimum, after deflation before attempting to move the tool and pull through restrictions.14. Pull out of hole slowly per the recommendations of the fishing tool specialist on site.


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CIRCULATIONNOZZLE

DIAMETER(in)

SETTINGFLOW RATE

(bpm)

SETTINGPRESSURE

(ps i)

ACTUATIONFLOW RATE

(bpm)

ACTUATIONPRESSURE

(ps i)

SLACK-OFFWEIGHT TO

RELEASE(lb)

BACK-UPRELEASE

DROP BALLDIAMETER

(in)

1/8 1/2 1750 1/2 1000 700 - 1000 1/2 - 5/8

3/16 3/4 1750 3/4 1000 700 - 1000 1/2 - 5/8

CIRCULATIONNOZZLE

DIAMETER(in)

SETTING

FLOW RATE(bpm)

SETTING

PRESSURE(ps i)

ACTUATION

FLOW RATE(bpm)

ACTUATION

PRESSURE(ps i)

SLACK-OFFWEIGHT (AT

TOOL) TORELEASE

(lb)

BACK-UPRELEASE

DROP BALLDIAMETER

(in)

1/8 1/2 1750 1/2 1000 700 - 1000 7/16 - 1/2

3/16 3/4 1750 3/4 1000 700 - 1000 7/16 - 1/2

TABLE 1. NOZZLE SELECTION/OPERATION CHART

1-11/16” “XFLO” SETTING TOOL (TT3005000R)

2-1/8” “XFLO” SETTING TOOL (TT3001000)

* Using 8.34 ppg fluid, with fixed 1/8” Ofifice Diverter Nozzle.

* Using 8.34 ppg fluid, with fixed 1/8” Ofifice Diverter Nozzle.

TABLE 2. HYDRAULIC RETRIEVAL TOOL (XHRT) OPERATION CHART

TOOLO.D.

(in/ mm)

OVERALLLENGTH

(in/ mm)

STANDARD

CONNECTION

FISHNECKDIAMETER

(in)

ASSEMBLY

NUMBER

1.68842,88

18.82478,03

1.000" MT 1.00 TT3006000R

2.12553,98

26.20665,48

1.500" MT 1.00 TT3007000R

TOOLO.D.(in)

RETRIEVESIRBP SIZES

(in)

ACTUATIONFLOWRATE

(bpm)

ACTUATIONPRESSURE

(ps i)

TENSILESTRENGTH

(lb)

1.688 1-11/16 thru 1-13/16 1/2 - 1 1000 22,500

2.125 2-1/8 thru 3-3/8 1/2 - 1 1000 22,500


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Coiled Tubing

Coiled Tubing Connector

Dual Flapper Check Valve

Hydraulic Disconnect

Centralizer

Tubing End Locator

“XFLO” Setting Tool

Inflatable Retrievable Bridge Plug(IRBP)

Figure 1. IRBP Running/Setting Tool String Diagram


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RIH Inflating Fully Inflated, Collets Open Pick-Up OffShear-Out Piston of IRBP

Open

Figure 2. IRBP/FAST Operation Procedure Diagram


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Coiled Tubing

Coiled Tubing Connector (CTC)

Hydraulic Disconnect

Double Knuckle Flex Joint

Bow Spring Centralizer

Pup Joint/Coupling

Bow Spring Centralizer

Hydraulic Retrieval Tool (XHRT)

Inflatable Retrievable Bridge Plug (IRBP)

Figure 3 . IRBP Retrieval Tool String


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PARTS LIST

PACKER O.D. 1-11/16" 1-13/16" 2-1/8" 2-1/2" 3-3/8"

COMPLETE ASSEMBLY TT3550169002 TT3550181002 TT3550213002 TT355025002 TT3550338002

ITEM DESCRIPTION PART NUMBERS

1 EQUALIZING FISHNECK SUB ASSEMBLY TT3005009R TT3005009R TT3001008 TT3001008 TT3001008

2 E-RING TT0200355201 TT0200355201 TT0200355201 TT0200355201 TT0200355201

3 O-RING C67-90-120 C67-90-120 C67-90-125 C67-90-125 C67-90-125

4 O-RING C67-90-113 (6) C67-90-113 (6) C67-90-113 (6) C67-90-113 (6) C67-90-113 (6)

5 EQUALIZING SLEEVE TT3005007R TT3005007R TT3001009 TT3001009 TT3001009

6 SPRING TT0540375201 (2) TT0540375201 (2) TT0540375201 (2) TT0540375201 (2) TT0540375201 (2)

7 POPPET SEAT TT3005008R TT3005008R TT3001007 TT3001007 TT3001007

8 SHEAR SCREW TT3310169228 (4) TT3310169228 (4) TT3310169228 (4) TT3310169228 (4) TT3310169228 (6)

9 O-RING C67-90-126 (4) C67-90-133 (4) C67-90-133 (4) C67-90-133 (4) C67-90-133 (4)

10 POPPET SUB ASSEMBLY TT3550169112 TT3550169112 TT3550213112 TT3550213112 TT3550213112

11 O-RING C67-90-116 C67-90-116 C67-90-116 C67-90-116 C67-90-116

12 HOUSING TT3310169224 TT3310169224 TT3550213225 TT3550213225 TT3550213225

13 POPPET PEDESTAL TT3310169252 TT3310169252 TT3550213230 TT3550213230 TT3550213230

14 BRASS SHEAR SCREW TT0530002213 (2) TT0530002213 (2) TT3470169225 (3) TT3470169225 (3) TT3470169225 (3)

15 SHEAR RING TT3310169253 TT3310169253 TT3550213231 TT3550213231 TT3550213231

16 BOTTOM SUB TT3550169227 TT3550169227 TT3550213227 TT3550213227 TT3550338227

17 FISHNECK NUT TT3550213228 (2) TT3550213228 (2) TT3550213228 (2) TT3550213228 (2) TT3550213228 (2)

18 O-RING C67-90-118 (2) C67-90-118 (2) C67-90-118 (2) C67-90-118 (2) C67-90-119 (2)

19 O-RING C67-90-112 (2) C67-90-112 (2) C67-90-112 (2) C67-90-112 (2) C67-90-112 (2)

20 SET SCREW10-24 X 3/16003-03-003

10-24 X 3/16003-03-003

10-24 X1/4003-03-004

10-24 X3/8003-03-006

NOT REQ'D

21 BACK-UP RING TT3550169241 TT3550169241 TT3550213241 TT3550213241 TT3550306241

22 MANDREL SUB-ASSEMBLY* TT3550169111 TT3550169111 TT3550213111 TT3550213111 TT3310338111

23 INFLATABLE ELEMENT* TT3130169217 TT3130169217 TT3130213217 TT3130213217 TT3130338217

24 PBP SLIDE SUB TT3310169233 TT3310169233 TT3310213233 TT3310213233 TT3310338233

25 PARKER PLUG TT0200303250 TT0200303250 TT0200303250 TT0200303250 TT0200303250 (2)

26 PLT ANCHOR PLATE* TT3310169230 TT3310169230 TT3310213230 TT3310213230 TT3310338230

27 PLT ANCHOR CAP* TT3310169231 TT3310169231 TT3310213231 TT3310213231 TT3310338231

28 SEVERING TENSION BOLT TT3310169256 (2) TT3310169256 (2) TT3310169256 (2) TT3310169256 (2) TT3310169256 (2)

2 9 S OC.S ET S CREW1/4-20 X 3/8003-C4-006

1/4-20 X 3/8003-C4-006

1/4-20 X 1/2003-C4-008

1/4-20 X 1/2003-C4-008

1/4-20 X 1/2003-C4-008

30 O-RING C67-90-111 C67-90-111 C67-90-110 C67-90-110 NOT REQ'D.

31 O-RING C67-90-119 C67-90-119 C67-90-119 C67-90-119 C67-90-119

32 BULL NOSE w/SHEAR- OUT PLUG TT3550169234 TT3550181234 TT3550213234 TT3550213234 TT3550338234

33 SHEAR-OUT PLUG TT3550213233 TT3550213233 TT3550213233 TT3550213233 TT3550213233

34 SHEAR-OUT PLUG CATCHER TT3550213239 TT3550213239 TT3550213239 TT3550213239 TT3550213239

35 SHEAR SCREW, BRASS TT0530002225 (10) TT0530002225 (10) TT3470169225 (10) TT3470169225 (10) TT3470169225 (10)

36 O-RING C67-90-126 (4) C67-90-128 (4) C67-90-133 (4) C67-90-138 (4) C67-90-147 (4)

37 O-RING C67-90-118 (3) C67-90-118 (3) C67-90-118 (3) C67-90-118 (3) C67-90-130 (3)

38 BUSHING SEAL NOT REQ'D. NOT REQ'D. NOT REQ'D. NOT REQ'D. TT3550338228

39 O-RING NOT REQ'D. NOT REQ'D. NOT REQ'D. NOT REQ'D. C67-90-128

* These items are protected by one or more patents; PLT (Pre-Load Tensioner), Mandrel Sub-Assembly and the Inflat ion Element.


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INFLATABLE RETRIEVABLE BRIDGE PLUG3-3/8”

INFLATABLE RETRIEVABLE BRIDGE PLUG1-11/16” thru 2-1/2”

Documents

ctrb_000248 IRBP Rev 13-12-2001