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US2734580A - layne - Google Patents

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US2734580A
US2734580A US2734580DA US2734580A US 2734580 A US2734580 A US 2734580A US 2734580D A US2734580D A US 2734580DA US 2734580 A US2734580 A US 2734580A
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casing
wall
cylindrical
section
tool
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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
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/11Perforators; Permeators
    • E21B43/116Gun or shaped charge perforators
    • 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

L. A. LAYNE Feb. 14, 1956 METHOD AND APPARATUS FOR REPAIRING BROKEN CASING IN WELL BORES Filed March 2. 1953 3 Sheets-Sheet 1 e 2 m M 4 3 7 6 5 WW I V f I f gm m W33: Ev I A m I wfli A e Wage h s e .lTLLI 1 L. A. LAYNE Feb. 14, 1956 METHOD AND APPARATUS FOR REPAIRING BROKEN CASING IN WELL BORES 3 Sheets-Sheet 2 Filed March 2, 1953 .I: II- II I llili I ccvcc Leflle A. Lay/7e INVENTOR.

ATTORNEY L- A. LAYNE Feb. 14. 1956 METHOD AND APPARATUS FOR REPAIRING BROKEN CASING IN WELL BORES 5 Sheets-Sheet 3 Filed March 2. 1953 Les/1e A. Lay/7e INVENTOR.

yp mg /4 7'7'ORNE Y METHOD AND APPARATUS FOR REPAIRING BROKEN CASING IN WELL BORES Leslie A. Layne, Houston, Tex.

Application March 2, 1953, Serial No. 339,797

4 Claims. (Cl. 166-14) The invention concerns a method and an apparatus for repairing broken casing, in place, in well bores.

It is an object of the invention to provide a method and means for realigning the portions of the casing immediately adjacent the break and for forming a rigid and secure joint permanently connecting the broken portions of the casing.

The invention contemplates a hydraulically expansible tool comprising a vertically disposed cylinder of smaller diameter than the inside diameter of the casing, the cylinder having a valved lower end and having a cylindrical wall section capable of being deformed outwardly by the application of fluid pressure, which may be lowered into the casing to the point where the break occurs and thereafter expanded by fluid pressure whereby the portions of the casing immediately adjacent the break are realigned with each other.

The invention further contemplates a hydraulically expansible tool of the type described which may be used also as a cementing plug. The invention contemplates first realigning the portions of the casing immediately adjacent the break, in the manner described, and thereafter perforating the adjacent area of the casing, as well as the cylindrical wall section of the tool, and forcing cement into the annulus between the formation and the easing, thru the perforations.

An advantageous feature of the invention is that the portions of the casing immediately adjacent the break may be realigned, and thereafter the adjacent area of the casing may be perforated, and cement forced into the annulus between the formation and the casing, through the perforations, in a single operation, without removing the tool from the hole.

Another advantageous feature of the invention is that it permits the connecting tubing to be withdrawn from the well bore, after depositing cement therein as above described, while causing the cement to be maintained under hydraulic pressure during such period of time as may be required for the cement to set. Thereafter the excess cement is drilled from the inside of the casing, and the tool itself is likewise removed from the casing by drilling. If desired the cylindrical wall section of the tool may be left in place to reenforce the resulting joint.

The invention will be readily understood by referring to the following description and the accompanying drawing, in which:

Fig. 1 is a diagrammatic view in elevation showing the broken casing, with a tool embodying the invention about to be lowered into position for repairing the break in the casing.

Fig. 2 is a diagrammatic view in elevation showing the tool in operative position, the tool being rotated 180 degrees from the position shown in Fig. 1 whereby its tapered lower end may be readily inserted in the lower portion of the casing, which may not be aligned with the upper portion.

Fig. 3 is a sectional view in elevation showing the cynited States Patent "ice lindrical wall section of the tool in expanded position and the adjacent portions of the casing in alignment with each other.

Fig. 4 is a sectional view in elevation showing the step of perforating the adjacent area of the casing and the cylindrical wall section of the tool.

Fig. 5 is a sectional view in elevation showing the step of forcing cement into the annulus between the casing and the formation, through the perforations.

Fig. 6 is a sectional view in elevation showing the step of drilling the excess cement, and the tool itself, from the inside of the casing.

Fig. 7 is a sectional view in elevation showing a modified form of the apparatus shown in Figs. 1 to 6, inelusive.

Fig. 8 is a sectional view in elevation, taken at right angles to the view shown in Fig. 7, showing the connecting tubing detached from the remainder of the apparatus. I

Referring to the drawing, a broken casing is shown disposed in a well bore. The well bore is designated by the numeral 1 and the portions of the casing above and below the break are indicated by the numerals 2 and 3, respectively. As shown in Fig. l, the portions 2 and 3 are not aligned with each other.

The hydraulically expansible tool of the invention comprises a vertically disposed cylinder having a diameter smaller than the inside diameter of the casing, the cylinder having a valved lower end, as hereinafter described, and a cylindrical wall section which is capable of being deformed outwardly by the application of fluid pressure. The cylindrical wall section, designated by the numeral 4, may be made of a suitable metal or alloy, such as mild steel or aluminum, which may be deformed under pressure without bursting. The lower end of the cylinder is at least partly closed by an end member 5, which is secured to the cylindrical wall section 4 and has a central opening 6 formed therein for the circulation of drilling fluid. The inner surface of the end member 5 is curved downwardly and inwardly adjacent the central opening 6 to form a valve seat for a ball valve 7, which may be dropped into the cylinder from the surface.

The upper end of the cylindrical wall section 4 is connected to a cylindrical wall section 8. The cylindrical wall section 8 is made of a metal or alloy having a greater tensile strength than the cylindrical wall section 4, so that it retains its shape while the cylindrical wall section 4 is being expanded.

For use in setting the tool in the well, and for other purposes as hereinafter described, the cylindrical wall section 8 is detachably secured to the lower end of a string of tubing 9. A collar Iii is secured to the lower end of the tubing 9, and a sealing ring 11, which is connected to the lower end of the collar 10 and extends downwardly and outwardly therefrom for engagement with the cylindrical wall section 8 whereby a fluid tight connection is maintained between the collar 10 and the cylindrical wall section 8. A pair of diametrically opposed pins 12 extend outwardly from the collar 10 for engagement by a pair of J-shaped slots 13 which are formed in the cylindrical wall section 8, adjacent the upper edge thereof, whereby the cylindrical wall section 8 is detachably secured to the collar 10.

As illustrated in Figs. 1, 2 and 3, the tapered end member 5 serves as a guide for inserting the tool in the lower portion 3 of the casing, which may not be aligned with the upper portion 2. The tool is lowered in the casing to the point where the break occurs, and is disposed partly within the upper portion 2 and partly within the lower portion 3 of the casing. The ball valve 7 is seated, and fluid pressure is applied to the tool, through the tubing 9, whereby the cylindrical wall section 4 is expanded so that it engages the walls of the casing above and below the avageso break, causing the portions 2 and 3 to be realigned with each other. Upon releasing the pressure the cylindrical wall section 4 retains the portions 2 and 3 in their proper relative positions.

As illustrated in Fig. 4, a perforating gun 14 may be lowered into the well on a wire line 15, through the tubing 9, so that it is disposed within the tool above described. Upon discharging the gun 14 perforations 16 may be formed in the adjacent area of the portions 2 and 3 of the casing, as well as in the cylindrical wall section 4, the perforations 16 extending also into the formation surrounding the well bore 1.

As illustrated in Fig. 5,'the perforating gun 14 may be withdrawn and cement may be forced under pressure into the annulus between the well bore 1 and the portions 2 and 3 of the casing, through the perforations 16. Cement is supplied to the tool through the tubing 9, and the cement preferably is maintained under hydraulic pressure for a period of from 24' to 72 hours, until the cement sets.

As illustrated in Fig. 6, the tubing 9 is finally withdrawn and the excess cement is drilled from the inside of the casing, using a suitable tool 17. The cylindrical wall sections 4' and 8, and the end member 5, likewise may be removed from the casing by drilling. If desired the cylindrical wall section 4 may be left in place to reenforce the resulting joint.

Referring to Figs. 7 and 8, a back pressure valve as described and claimed in the application of Louis C. Mundt, Serial No. 305,493, filed August 20, 1952, is incorporated in the apparatus. The back pressure valve comprises a resilient, tubular body member 18, one end of the body member 18 being secured to a rigid annular member 19 and an elastic, self sealing opening 20 being formed in the end of the body member 18 opposite the annular member 19. The annular member 19 is secured to the cylindrical wall section 4 adjacent the point where the cylindrical wall sections 4 and 8 are connected, and the arrangement is such that the lower end of the tubing 9, below the collar 10, may be inserted through the elastic, self sealing opening 20. This arrangement permits the tubing 9 to be withdrawn, as shown in Fig. 8, immediately following the step of forcing cement into the annulus between the bore of the well and the casing, while maintaining the cement under substantial fluid pressure until suflicient time has elapsed to cause it to set.

The invention may be modified in various ways without departing from the spirit and scope thereof.

I claim:

1. In a method of repairing broken casing, in Well bores, the combination of steps comprising lowering into the casing a hydraulically expansible tool comprising a vertically disposed cylinder of smaller diameter than the inside diameter of the casing and having a cylindrical wall section which is capable of being deformed outwardly by the application of fluid pressure, disposing the tool within the casing at such elevation that the cylindrical Wall section extends from a point above the break to a point below the break, and expanding the cylindrical wall section by fluid pressure whereby the portions of the casing irrilmediately adjacent the break are aligned with each ot er.

2. In a method of repairing broken casing, in well bores, the combination of steps comprising loweringv into the easing a hydraulically expansiole tool comprising a vertically disposed cylinder of smaller diameter than the inside diameter of the casing and having a cylindrical wall section which is capable of being deformed outwardly by the application of fluid pressure, disposing the tool within the casing at such elevation that the cylindrical wall section extends from a point above the break to a point below the break, expanding the cylindrical wall section by fluid pressure whereby the portions of the casing immediately adjacent the break are aligned with each other, perforating the adjacent area of the casing, as well as the cylindrical wall section of the tool, forcing cement into the annulus between the formation and the casing, through the perforations, and thereafter removing excess cement, and at least a part of the tool, from the inside of the casing by drilling.

3. 1n apparatus for repairing broken casing, in well bores, the combination of a vertically disposed cylinder of smaller diameter than the inside diameter of the casing, the cylinder having a cylindrical wall section which is capable of being deformed outwardly by the application of fluid pressure, the lower end of the cylinder being at least partly closed by an end member having a central opening formed therein for the circulation of drilling fluid, the inner surface of the end member being curved downwardly and inwardly adjacent the central opening to form a valve seat for a ball valve, the end member being tapered downwardly to one side whereby it may be used as a wedge to facilitate inserting the tool in the portion of the casing below the break.

4. In apparatus for repairing broken casing, in well bores, the combination of a vertically disposed cylinder of smaller diameter than the inside diameter of the casing, the cylinder having a cylindrical wall section which is capable of being deformed outwardly by the application of fluid pressure, and means for applying fluid pressure to the cylinder comprising a string of tubing disposed within the casing and extending downwardly into the cylinder, means for detachably connecting the tubing to the upper end of the cylinder, and means for effecting a fluid tight seal between the tubing and the cylinder comprising a back pressure valve disposed in the annulus between the cylinder and the tubing, the back pressure valve comprising a resilient, tubular body member, one end of the body member being secured to a rigid annular member which in turn is secured to the cylinder, and an elastic, self sealing opening being formed in the end of the body member opposite the annular member, the arrangement being such that the lower end of the tubing may be inserted through the elastic, self sealing opening and may be withdrawn therefrom while maintaining the cylinder under substantial fluid pressure.

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Cited By (83)

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US3075582A (en) * 1960-10-24 1963-01-29 Jersey Prod Res Co Prevention of erosion of pipe strings in multiply tubingless completed oil and gas wells
DE1152979B (en) * 1961-04-08 1963-08-22 Archer William Kammerer A device for post-processing of wells
US3129759A (en) * 1961-04-05 1964-04-21 Halliburton Co Casing alignment and cementing tool and method
US3242985A (en) * 1963-08-09 1966-03-29 Exxon Production Research Co Method for re-entry of damaged well pipe
US3477506A (en) * 1968-07-22 1969-11-11 Lynes Inc Apparatus relating to fabrication and installation of expanded members
WO1990005833A1 (en) * 1988-11-22 1990-05-31 Tatarsky Gosudarstvenny Nauchno-Issledovatelsky I Proektny Institut Neftyanoi Promyshlennosti Device for closing off a complication zone in a well
US5404950A (en) * 1992-12-22 1995-04-11 Mobil Oil Corporation Low temperature underwater epoxy system for zone isolation, remedial cementing, and casing repair
US6328113B1 (en) 1998-11-16 2001-12-11 Shell Oil Company Isolation of subterranean zones
US6354373B1 (en) 1997-11-26 2002-03-12 Schlumberger Technology Corporation Expandable tubing for a well bore hole and method of expanding
US20020040787A1 (en) * 1998-12-07 2002-04-11 Cook Robert Lance Forming a wellbore casing while simultaneously drilling a wellbore
US20020100595A1 (en) * 1999-02-26 2002-08-01 Shell Oil Co. Flow control system for an apparatus for radially expanding tubular members
US6470966B2 (en) 1998-12-07 2002-10-29 Robert Lance Cook Apparatus for forming wellbore casing
US20030024708A1 (en) * 1998-12-07 2003-02-06 Shell Oil Co. Structral support
US6557640B1 (en) 1998-12-07 2003-05-06 Shell Oil Company Lubrication and self-cleaning system for expansion mandrel
US6575250B1 (en) 1999-11-15 2003-06-10 Shell Oil Company Expanding a tubular element in a wellbore
US6575240B1 (en) 1998-12-07 2003-06-10 Shell Oil Company System and method for driving pipe
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
US20030121558A1 (en) * 1998-11-16 2003-07-03 Cook Robert Lance Radial expansion of tubular members
US20030127225A1 (en) * 2001-12-22 2003-07-10 Harrall Simon John Bore liner
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
US20030222455A1 (en) * 1999-04-26 2003-12-04 Shell Oil Co. Expandable connector
US20030233524A1 (en) * 2002-06-12 2003-12-18 Poisner David I. Protected configuration space in a protected 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
US6745845B2 (en) 1998-11-16 2004-06-08 Shell Oil Company Isolation of subterranean zones
US20040112589A1 (en) * 2000-10-02 2004-06-17 Cook Robert Lance Mono-diameter wellbore casing
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
US20040182569A1 (en) * 1998-12-07 2004-09-23 Shell Oil Co. Apparatus for expanding a tubular member
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US20050098323A1 (en) * 1999-03-11 2005-05-12 Shell Oil Co. Forming a wellbore casing while simultaneously drilling a wellbore
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US20060113086A1 (en) * 2002-09-20 2006-06-01 Scott Costa Protective sleeve for expandable tubulars
US20060113085A1 (en) * 2002-07-24 2006-06-01 Scott Costa Dual well completion system
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Cited By (209)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3075582A (en) * 1960-10-24 1963-01-29 Jersey Prod Res Co Prevention of erosion of pipe strings in multiply tubingless completed oil and gas wells
US3129759A (en) * 1961-04-05 1964-04-21 Halliburton Co Casing alignment and cementing tool and method
DE1152979B (en) * 1961-04-08 1963-08-22 Archer William Kammerer A device for post-processing of wells
US3242985A (en) * 1963-08-09 1966-03-29 Exxon Production Research Co Method for re-entry of damaged well pipe
US3477506A (en) * 1968-07-22 1969-11-11 Lynes Inc Apparatus relating to fabrication and installation of expanded members
US5083608A (en) * 1988-11-22 1992-01-28 Abdrakhmanov Gabdrashit S Arrangement for patching off troublesome zones in a well
WO1990005833A1 (en) * 1988-11-22 1990-05-31 Tatarsky Gosudarstvenny Nauchno-Issledovatelsky I Proektny Institut Neftyanoi Promyshlennosti Device for closing off a complication zone in a well
US5404950A (en) * 1992-12-22 1995-04-11 Mobil Oil Corporation Low temperature underwater epoxy system for zone isolation, 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
US6354373B1 (en) 1997-11-26 2002-03-12 Schlumberger Technology Corporation Expandable tubing for a well bore hole and method of expanding
US20030121558A1 (en) * 1998-11-16 2003-07-03 Cook Robert Lance 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
US7168499B2 (en) 1998-11-16 2007-01-30 Shell Oil Company Radial expansion of tubular members
US20050077051A1 (en) * 1998-11-16 2005-04-14 Cook Robert Lance Radial expansion of tubular members
US20050045341A1 (en) * 1998-11-16 2005-03-03 Cook Robert Lance Radial expansion of tubular members
US20050045324A1 (en) * 1998-11-16 2005-03-03 Cook Robert Lance Radial expansion of tubular members
US20050028988A1 (en) * 1998-11-16 2005-02-10 Cook Robert Lance Radial expansion of tubular members
US7231985B2 (en) 1998-11-16 2007-06-19 Shell Oil Company Radial expansion of tubular members
US20040123983A1 (en) * 1998-11-16 2004-07-01 Enventure Global Technology L.L.C. Isolation of subterranean zones
US6745845B2 (en) 1998-11-16 2004-06-08 Shell Oil Company Isolation of subterranean zones
US7270188B2 (en) 1998-11-16 2007-09-18 Shell Oil Company Radial expansion of tubular members
US6712154B2 (en) 1998-11-16 2004-03-30 Enventure Global Technology Isolation of subterranean zones
US7275601B2 (en) 1998-11-16 2007-10-02 Shell Oil Company Radial expansion of tubular members
US7299881B2 (en) 1998-11-16 2007-11-27 Shell Oil Company Radial expansion of tubular members
US7357190B2 (en) 1998-11-16 2008-04-15 Shell Oil Company Radial expansion of tubular members
US6328113B1 (en) 1998-11-16 2001-12-11 Shell Oil Company Isolation of subterranean zones
US6634431B2 (en) 1998-11-16 2003-10-21 Robert Lance Cook Isolation of subterranean zones
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