US3111991A - Apparatus for repairing well casing - Google Patents

Apparatus for repairing well casing Download PDF

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Publication number
US3111991A
US3111991A US10974261A US3111991A US 3111991 A US3111991 A US 3111991A US 10974261 A US10974261 A US 10974261A US 3111991 A US3111991 A US 3111991A
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Prior art keywords
housing
elastic tube
sleeve
tubular body
well
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Expired - Lifetime
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George E O'neal
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Pan American Petroleum Corp
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Pan American Petroleum Corp
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/10Reconditioning of well casings, e.g. straightening

Description

Nov. 26, 1963 G. E. ONEAL 3,111,991

APPARATUS FOR REPAIRING WELL CASING Filed May 12. 1961 2 Sheets-Sheet 2 GEORGE E. O'NEAL INVENTOR.

MMQM M ATTORNEY United States Patent 3,111,91 fiEiARATUS iF DR REPATRENG WELL CASENG George E. UNeai, Tulsa, Gide, assignor to Pan American ?etroicum Corporation, Tulsa, Okla, a corporation of Delaware Filed May 12, 1961, Ser. No. 109,742 3 Claims. (6!. res-2s? This invention relates to the art of repairing leaks in well casings. More particularly, it concerns means of making casing repairs wherein a sleeve of a settable patching material is expanded inside the casing at the leak and held in place until setting occurs. The present invention embodies an apparatus which protects the settable material from mechanical damage While the assembly is being lowered into the Well.

In recent years a method has been developed for patchirig holes in well casing by expanding a sleeve containing a settable material against the surface of the casing. Partially polymerized epoxy resins have been found to be particularly suitable, owing to their inertness to well fluids and their property of forming a strong bond with the metal casing. The sleeve of patching material is prepared on an expansible tool, then lowered into the well opposite the leak. The tool is then expanded to press the patching material against the casing, filling the leak with the settable resin. The tool is maintained in its expanded position until the resin had hardened. This method is described in US. Patent 3,028,915, Jennings.

In addition to the resin, the patch usually contains a fabric, such as wire mesh, glass cloth and the like, to increase the strength of the patch as well as to provide permeability for the viscous, resin-forming material during the placement of the patch. Additionally, the fabric retards sagging of the resin-forming material and reduces the erosive effect of the well fluids on the resin-forming material as the tool is lowered into the well.

Centralizers above and below the patch assembly are helpful in preventing damage to the sleeve as it is run in the well; nevertheless, some repair jobs have been unsuccessful for the reason that the partially polymerized material was deformed somewhat while being run. Presumably, the turbulence of well fluids displaced through the narrow annular space between the tool and the casing, as well as the obstructions on the wall of the casing, contributed to the deformation. There is a further possibility that droplets of well fluids become entrained in the partially-polymerized resin, effectively diluting it and weakening the strength of its bond with the casing.

It is therefore an object of my invention to provide apparatus for placing a patch containing a partially-polymerized resin in a well without subjecting the patch to abrasion and erosion by solids and fluids in the well. it is also an object of my invention to prevent contamination of the resinous material with the well fluids. These and other objects may be accomplished by my invention described in greater detail hereafter.

FIGURE 1 is a View in cross-section of the apparatus of my invention as it is being run into the well.

FiGURE 2 is a view in cross-section showing the apparatus as pressure is being applied to hold the patch against the casing.

FIG. 3 shows the apparatus as it might be assembled to run in a well.

Briefly described, the invention comprises a protective cover for the patch sleeve which is slipped off the sleeve at the start of the expansion of the setting tool.

Referring to FIGURE 1 for a description of the apparatus, elastic tube 2t} is covered with patch sleeve 21. The sleeve may comprise layers of glass fibers impregnated with a viscous, partially-polymerized epoxy resin and a curing agent. The glass fabric is folded or wound such that the sleeve may be expanded. The structure of the sleeve, and the application of the sleeve and resin to the elastic tube are described in more detail in US. Patent 3,028,915, Jennings. Upper and lower clamps, 22 and 23, respectively, hold the ends of elastic tube 20 on tubular body 1'3, whereby fluid in the tubular body can pass through perforations 19 and inflate the elastic tube. Housing 16 surrounds the patch sleeve. Ports 18 in the tubular body above upper clamp 22 admit fluid to the space bet-ween head 17 of housing 16 and upper clamp 22. O-ring 24 confines the fluid to the space above the upper clamp. Stop 15 on the tubular body limits the upward travel of housing 16. The tool assembly may be lowered into casing 11 on tubing. Check valve 1-4 in the lower end of the tubular body provides a bypass through the tool for well fluids while the tool is being run in the well.

FIGURE 2 shows the positions of the various components after the patch sleeve has been expanded against the casing and before the setting tool is removed from the well. Housing 16 is held in the upper position with head 17 against stop 1'5 by inflating fluid 25. O-ring '24 seals the space between the upper clamp and the housing. The inflating fluid also holds the elastic tube and patch sleeve expanded until the resin solidifies.

In using my invention to repair a leak in casing, the tool is first assembled at the surface. As shown in FIG- U'RE 3, centralizers 27 and 23 may be installed on tubular body 13 above and below the patch sleeve to keep the tool from dragging against the casing when it is lowered into the well. Also, circulation joint 29 may be installed above the upper centralizer to permit displacement through check valve :14 and tubular body 13 when the tool is run in the well. It is preferable to use a housing which does not fit snugly over the patch sleeve in order that the housing can be displaced with low fluid pressure. A unold release agent may be applied to the inside surface of housing is to prevent bonding of the housing to the resin, in case there is contact between them. Additionally, three or more spacer lugs may be positioned about the lower clamp to hold the patch assembly centralized within the housing. In some instances it may be desirable to provide an O-ring on the lower clamp to exclude well fluids from the patch sleeve while the tool is being run into the well.

With the housing pulled back so that head i7 is against stop 15, the fiabric and resin sleeve may be applied to the elastic tube. The outside diameter of the sleeve may be about one to two inches less than the inside diameter of the casing. The tube is usually coated with a mold-release agent to facilitate its ultimate removal from the well. After the sleeve is in place on the elastic tube, the housing is moved to its position over the sleeve, as shown in FIGURE 1. The tubular body is then connected to tubing and run into the well until the patch assembly is centered over leak 12 in the casing. The circulating valve is then closed. Fluid subsequently pumped down the tubing flows through ports 18. The elasticity of tube 20* prevents any significant inflation of that member until the housing has been removed and comes to rest against stop 15. It is desirable that the housing cove-rs the patch sleeve without touching it to avoid any resistance to displacement of the housing from its running-in position. Thereafter, a pressure about to 500 p.s.i. greater than well pressure is applied to the elastic tube to produce the necessary expansion of the patch sleeve. A small quantity of the resin is usually extruded through the leak, forming button 26, as seen in FIGURE 2. The pressure is held on the tool for a length of time calculated to perunit the setting of the resin on the sleeve. Thereafter,

the pressure is released, permitting the elastic tube to contract and be withdrawn from the Well.

Housing 16 is a cylindrical member having sufficient tensile strength to Withstand the pressure differential which exists across it during the patch setting step. It is desirable that the housing occupy as little space as possible, in order that the patch sleeve can be assembled for minimum expansion during placement. For example, a tool for patching SVz-inch casing can use a housing made of 16-20 gage steel plate where the plate is boiler grade. The stop is positioned on the tubular body a distance above the upper clamp, which enables the housing to clear the patch sleeve, but does not move beyond the O-ring.

While I have described my invention as a tool to be run on tubing, it should be understood that it can also be run on a wire line. In that embodiment the housing would be removed and the patch sleeve expanded by fluid pressure either stored or generated within the tool. For example, a propellant charge of the type used in Wire line stimulation tools might be used. The charge could be detonated by a go-devil, or similar device, introduced at the well head. Examples of this type of equipment are illustrated in US. Patent 2,781,854, Boer et al.; US. Patent 2,842,212, Lebourg; and U8. Patent 2,843,- 042, Andrus. Also, this invention may be used in repairing pipes other than those in Wells. Pipelines sometimes develop leaks in locations not readily accessible, where this could be used to advantage. A leak in an underwater river crossing, for example, could be repaired in this manner. Therefore, my invention should be limited only by the scope of the appended claims when read in light of the present disclosure.

I claim:

1. Apparatus for applying a liner to the inner sunface of a cylinder comprising: a perforated tubular body, an

elastic tube enclosing said perforated body, means for 4 tube and housing, a check valve in the lower end of said tubular body, and a circulating joint above said elastic tube and housing for attaching a tubing string to said tubular body.

2. A tool for applying an expansible settable patch sleeve to the inner surface of a cylinder comprising: a perforated tubular body, an elastic tube enclosing said perforated body, means for sealing the ends of said elastic tube to said perforated body, a housing loosely enclosing said elastic tube, sufiicient space being provided between said elastic tube and said housing for said expansible settable patch sleeve, means for displacing said housing axially along said tubular body to expose said expansible sleeve in operation of the tool, centralizcrs above and below said elastic tube and housing, a check valve in the lower end of said tubular body, and a circulating joint above said elastic tube and housing for attaching a tubing string to said tubular body.

3. The tool of claim 2 in which said means for displacing said housing comprises first and second fiuid seals between said housing and said tubular body to define a variable volume chamber between said housing and said tubular body, a fluid port in said tubular body said port connecting the interior of said variable volume chamber to the interior of said tubular body and means to limit the movement of said housing to a position which uncovers said expansible sleeve While maintaining said second fluid seal.

References Cited in the file of this patent UNITED STATES PATENTS 2,079,830 Baker et al. May 11, 1937 2,232,325 Hamilton Feb. 18, 1941 2,583,316 Bannister Jan. 22, 1952 2,607,425 Taylor Aug. 19, 1952 2,618,345 Tucker Nov. 18, 1952 2,735,496 Wilson Feb. 21, 1956 2,804,148 Schemp et al Aug. 27, 1957 2,812,025 Teague et al Nov. 5, 1957 2,851,1 12 Buck Sept. 9, 1958 2,872,983 Renouf Feb. 10, 1959 2,922,478 Maly Jan. 26, 1960 3,028,915 Jennings Apr. 10, 1962

Claims (1)

1. APPARATUS FOR APPLYING A LINER TO THE INNER SURFACE OF A CYLINDER COMPRISING: A PERFORATED TUBULAR BODY, AN ELASTIC TUBE ENCLOSING SAID PERFORATED BODY, MEANS FOR SEALING THE ENDS OF SAID ELASTIC TUBE TO SAID PERFORATED BODY, A RESIN SATURATED EXPANSIBLE SLEEVE OF LAMINATED FIBERS SURROUNDING SAID ELASTIC TUBE, A HOUSING LOOSELY ENCLOSING SAID EXPANSIBLE SLEEVE, MEANS FOR DISPLACING SAID HOUSING AXIALLY ALONG SAID TUBULAR BODY TO EXPOSE SAID EXPANSIBLE SLEEVE SO SAID SLEEVE CAN BE EXPANDED AGAINST THE INNER SURFACE OF SAID CYLINDER BY INFLATION OF SAID ELASTIC TUBE, CENTRALIZERS ABOVE AND BELOW SAID ELASTIC TUBE AND HOUSING, A CHECK VALVE IN THE LOWER END OF SAID TUBULAR BODY, AND A CIRCULATING JOINT ABOVE SAID ELASTIC TUBE AND HOUSING FOR ATTACHING A TUBING STRING TO SAID TUBULAR BODY.
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Cited By (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194310A (en) * 1962-07-02 1965-07-13 Loomis Jean Doyle Method of locating leaks and repairing well tubing in situ
US3297092A (en) * 1964-07-15 1967-01-10 Pan American Petroleum Corp Casing patch
US3358769A (en) * 1965-05-28 1967-12-19 William B Berry Transporter for well casing interliner or boot
US3364993A (en) * 1964-06-26 1968-01-23 Wilson Supply Company Method of well casing repair
US3419080A (en) * 1965-10-23 1968-12-31 Schlumberger Technology Corp Zone protection apparatus
US4501514A (en) * 1980-09-08 1985-02-26 British Underwater Pipeline Engineering Securing of structures to the sea-bed
US4971152A (en) * 1989-08-10 1990-11-20 Nu-Bore Systems Method and apparatus for repairing well casings and the like
US5295541A (en) * 1992-12-22 1994-03-22 Mobil Oil Corporation Casing repair using a plastic resin
WO1994021886A1 (en) * 1993-03-19 1994-09-29 Mobil Oil Corporation Method for isolating a wellbore formation zone
US5377757A (en) * 1992-12-22 1995-01-03 Mobil Oil Corporation Low temperature epoxy system for through tubing squeeze in profile modification, remedial cementing, and casing repair
US6138761A (en) * 1998-02-24 2000-10-31 Halliburton Energy Services, Inc. Apparatus and methods for completing a wellbore
US6328113B1 (en) 1998-11-16 2001-12-11 Shell Oil Company Isolation of subterranean zones
US6470966B2 (en) 1998-12-07 2002-10-29 Robert Lance Cook Apparatus for forming wellbore casing
US6557640B1 (en) 1998-12-07 2003-05-06 Shell Oil Company Lubrication and self-cleaning system for expansion mandrel
US20030094277A1 (en) * 1998-12-07 2003-05-22 Shell Oil Co. Expansion cone for radially expanding tubular members
US6568471B1 (en) 1999-02-26 2003-05-27 Shell Oil Company Liner hanger
US6575240B1 (en) 1998-12-07 2003-06-10 Shell Oil Company System and method for driving pipe
US6575250B1 (en) 1999-11-15 2003-06-10 Shell Oil Company Expanding a tubular element in a wellbore
US20030107217A1 (en) * 1999-10-12 2003-06-12 Shell Oil Co. Sealant for expandable connection
US20030116325A1 (en) * 2000-07-28 2003-06-26 Cook Robert Lance Liner hanger with standoffs
US6604763B1 (en) 1998-12-07 2003-08-12 Shell Oil Company Expandable connector
US6634431B2 (en) 1998-11-16 2003-10-21 Robert Lance Cook Isolation of subterranean zones
US6640903B1 (en) 1998-12-07 2003-11-04 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
US20030233524A1 (en) * 2002-06-12 2003-12-18 Poisner David I. Protected configuration space in a protected environment
US6675901B2 (en) 2000-06-01 2004-01-13 Schlumberger Technology Corp. Use of helically wound tubular structure in the downhole environment
US6679334B2 (en) 2001-05-30 2004-01-20 Schlumberger Technology Corporation Use of helically wound tubular structure in the downhole environment
US20040045718A1 (en) * 2000-09-18 2004-03-11 Brisco David Paul Liner hanger with sliding sleeve valve
US6712154B2 (en) 1998-11-16 2004-03-30 Enventure Global Technology Isolation of subterranean zones
US20040069499A1 (en) * 2000-10-02 2004-04-15 Cook Robert Lance Mono-diameter wellbore casing
US6725919B2 (en) 1998-12-07 2004-04-27 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
US6745845B2 (en) 1998-11-16 2004-06-08 Shell Oil Company Isolation of subterranean zones
US20040118574A1 (en) * 1998-12-07 2004-06-24 Cook Robert Lance Mono-diameter wellbore casing
US20040123983A1 (en) * 1998-11-16 2004-07-01 Enventure Global Technology L.L.C. Isolation of subterranean zones
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US20050023002A1 (en) * 2003-07-30 2005-02-03 Frank Zamora System and methods for placing a braided tubular sleeve in a well bore
US6892819B2 (en) 1998-12-07 2005-05-17 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
US6968618B2 (en) 1999-04-26 2005-11-29 Shell Oil Company Expandable connector
US7048067B1 (en) 1999-11-01 2006-05-23 Shell Oil Company Wellbore casing repair
US7055608B2 (en) 1999-03-11 2006-06-06 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
US7100685B2 (en) 2000-10-02 2006-09-05 Enventure Global Technology Mono-diameter wellbore casing
US7168499B2 (en) 1998-11-16 2007-01-30 Shell Oil Company Radial expansion of tubular members
US7168496B2 (en) 2001-07-06 2007-01-30 Eventure Global Technology Liner hanger
US7195064B2 (en) 1998-12-07 2007-03-27 Enventure Global Technology Mono-diameter wellbore casing
US7231985B2 (en) 1998-11-16 2007-06-19 Shell Oil Company Radial expansion of tubular members
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US7258168B2 (en) 2001-07-27 2007-08-21 Enventure Global Technology L.L.C. Liner hanger with slip joint sealing members and method of use
US7290616B2 (en) 2001-07-06 2007-11-06 Enventure Global Technology, L.L.C. Liner hanger
US7290605B2 (en) 2001-12-27 2007-11-06 Enventure Global Technology Seal receptacle using expandable liner hanger
US7308755B2 (en) 2003-06-13 2007-12-18 Shell Oil Company Apparatus for forming a mono-diameter wellbore casing
US7325602B2 (en) 2000-10-02 2008-02-05 Shell Oil Company Method and apparatus for forming a mono-diameter wellbore casing
US7350563B2 (en) 1999-07-09 2008-04-01 Enventure Global Technology, L.L.C. System for lining a wellbore casing
US7360591B2 (en) 2002-05-29 2008-04-22 Enventure Global Technology, Llc System for radially expanding a tubular member
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US7377326B2 (en) 2002-08-23 2008-05-27 Enventure Global Technology, L.L.C. Magnetic impulse applied sleeve method of forming a wellbore casing
US7383889B2 (en) 2001-11-12 2008-06-10 Enventure Global Technology, Llc Mono diameter wellbore casing
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US7404444B2 (en) 2002-09-20 2008-07-29 Enventure Global Technology Protective sleeve for expandable tubulars
US7410000B2 (en) 2001-01-17 2008-08-12 Enventure Global Technology, Llc. Mono-diameter wellbore casing
US7416027B2 (en) 2001-09-07 2008-08-26 Enventure Global Technology, Llc Adjustable expansion cone assembly
US7424918B2 (en) 2002-08-23 2008-09-16 Enventure Global Technology, L.L.C. Interposed joint sealing layer method of forming a wellbore casing
US7438133B2 (en) 2003-02-26 2008-10-21 Enventure Global Technology, Llc Apparatus and method for radially expanding and plastically deforming a tubular member
US20090032257A1 (en) * 2005-02-10 2009-02-05 Christophe Rayssiguier Method and Apparatus for Consolidating a Wellbore
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US7513313B2 (en) 2002-09-20 2009-04-07 Enventure Global Technology, Llc Bottom plug for forming a mono diameter wellbore casing
US7516790B2 (en) 1999-12-03 2009-04-14 Enventure Global Technology, Llc Mono-diameter wellbore casing
US7552776B2 (en) 1998-12-07 2009-06-30 Enventure Global Technology, Llc Anchor hangers
US7571774B2 (en) 2002-09-20 2009-08-11 Eventure Global Technology Self-lubricating expansion mandrel for expandable tubular
US7603758B2 (en) 1998-12-07 2009-10-20 Shell Oil Company Method of coupling a tubular member
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US7740076B2 (en) 2002-04-12 2010-06-22 Enventure Global Technology, L.L.C. Protective sleeve for threaded connections for expandable liner hanger
US7739917B2 (en) 2002-09-20 2010-06-22 Enventure Global Technology, Llc Pipe formability evaluation for expandable tubulars
US7775290B2 (en) 2003-04-17 2010-08-17 Enventure Global Technology, Llc Apparatus for radially expanding and plastically deforming a tubular member
US7793721B2 (en) 2003-03-11 2010-09-14 Eventure Global Technology, Llc Apparatus for radially expanding and plastically deforming a tubular member
US7819185B2 (en) 2004-08-13 2010-10-26 Enventure Global Technology, Llc Expandable tubular
US7886831B2 (en) 2003-01-22 2011-02-15 Enventure Global Technology, L.L.C. Apparatus for radially expanding and plastically deforming a tubular member
US7918284B2 (en) 2002-04-15 2011-04-05 Enventure Global Technology, L.L.C. Protective sleeve for threaded connections for expandable liner hanger
US20120006558A1 (en) * 2010-07-09 2012-01-12 Brite Alan D Submergible oil well sealing device and method for sealing underwater oil wells
US20120006559A1 (en) * 2010-07-09 2012-01-12 Brite Alan D Submergible oil well sealing device with valves and method for installing a submergible oil well sealing device and resuming oil production
US8851184B2 (en) * 2011-11-10 2014-10-07 John Mayn Deslierres Process, device, and system to cap and seal oil and gas in a riser pipe
CN104499977A (en) * 2014-12-31 2015-04-08 北方斯伦贝谢油田技术(西安)有限公司 Horizontal well bushing shaping repair method and device

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Cited By (149)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194310A (en) * 1962-07-02 1965-07-13 Loomis Jean Doyle Method of locating leaks and repairing well tubing in situ
US3364993A (en) * 1964-06-26 1968-01-23 Wilson Supply Company Method of well casing repair
US3297092A (en) * 1964-07-15 1967-01-10 Pan American Petroleum Corp Casing patch
US3358769A (en) * 1965-05-28 1967-12-19 William B Berry Transporter for well casing interliner or boot
US3419080A (en) * 1965-10-23 1968-12-31 Schlumberger Technology Corp Zone protection apparatus
US4501514A (en) * 1980-09-08 1985-02-26 British Underwater Pipeline Engineering Securing of structures to the sea-bed
US4971152A (en) * 1989-08-10 1990-11-20 Nu-Bore Systems Method and apparatus for repairing well casings and the like
US5377757A (en) * 1992-12-22 1995-01-03 Mobil Oil Corporation Low temperature epoxy system for through tubing squeeze in profile modification, remedial cementing, and casing repair
US5531272A (en) * 1992-12-22 1996-07-02 Mobil Oil Corporation Low temperature underwater epoxy system for zone isolation, remedial cementing, and casing repair
US5295541A (en) * 1992-12-22 1994-03-22 Mobil Oil Corporation Casing repair using a plastic resin
US5404950A (en) * 1992-12-22 1995-04-11 Mobil Oil Corporation Low temperature underwater epoxy system for zone isolation, remedial cementing, and casing repair
WO1994021886A1 (en) * 1993-03-19 1994-09-29 Mobil Oil Corporation Method for isolating a wellbore formation zone
US6138761A (en) * 1998-02-24 2000-10-31 Halliburton Energy Services, Inc. Apparatus and methods for completing a wellbore
US6263968B1 (en) * 1998-02-24 2001-07-24 Halliburton Energy Services, Inc. Apparatus and methods for completing a wellbore
US6634431B2 (en) 1998-11-16 2003-10-21 Robert Lance Cook Isolation of subterranean zones
US7168499B2 (en) 1998-11-16 2007-01-30 Shell Oil Company Radial expansion of tubular members
US7108072B2 (en) 1998-11-16 2006-09-19 Shell Oil Company Lubrication and self-cleaning system for expansion mandrel
US7121352B2 (en) 1998-11-16 2006-10-17 Enventure Global Technology Isolation of subterranean zones
US7231985B2 (en) 1998-11-16 2007-06-19 Shell Oil Company Radial expansion of tubular members
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