EP0418056B1 - Ensemble de réparation avec joint métallique de cuvelage - Google Patents

Ensemble de réparation avec joint métallique de cuvelage Download PDF

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Publication number
EP0418056B1
EP0418056B1 EP19900309981 EP90309981A EP0418056B1 EP 0418056 B1 EP0418056 B1 EP 0418056B1 EP 19900309981 EP19900309981 EP 19900309981 EP 90309981 A EP90309981 A EP 90309981A EP 0418056 B1 EP0418056 B1 EP 0418056B1
Authority
EP
European Patent Office
Prior art keywords
casing
seal ring
patch
ribs
cylindrical body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19900309981
Other languages
German (de)
English (en)
Other versions
EP0418056A1 (fr
Inventor
Thomas C/O Tri-State Oil Tool Baker Hughes Doig
Kenneth Alexander Murray
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tri State Oil Tool UK Ltd
FMC Corp
Tri State Oil Tools Inc
Original Assignee
Tri State Oil Tool UK Ltd
FMC Corp
Tri State Oil Tools Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tri State Oil Tool UK Ltd, FMC Corp, Tri State Oil Tools Inc filed Critical Tri State Oil Tool UK Ltd
Publication of EP0418056A1 publication Critical patent/EP0418056A1/fr
Application granted granted Critical
Publication of EP0418056B1 publication Critical patent/EP0418056B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/08—Casing joints
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E21B23/01—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for anchoring the tools or the like
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00—Cutting 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
    • E21B29/10—Reconditioning of well casings, e.g. straightening
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole

Definitions

  • This invention relates to a patch for leaks or defects in oil-well casing.
  • an object of the present invention is to provide a casing patch utilising a metal-to-metal seal which provides a high sealing efficiency and a long useful life, and a seal ring for use in such a patch.
  • the invention is one aspect relates to a casing patch comprising a generally cylindrical body for positioning over the end of a cut casing, means within the body for gripping the casing, and a seal ring which in use is interposed between the body and an outer surface of the casing.
  • the invention is characterised by the seal ring is provided with a plurality of axially spaced internal ribs encircling the outer surface of the casing; and the body being shaped such that axial force applied to the body produces a radial compressive force on the seal ring; and the seal ring being made out of a metal having a strength and ductility such that said compressive force produces plastic deformation of said ribs, forced by said compression against the outer surface of the casing to form a metal-to-metal seal irrespective of outer surface imperfections of the casing.
  • the invention provides a seal ring for use in the patch defined in the foregoing paragraph, the seal ring comprising a generally cylindrical body having an internal surface formed with a plurality of encircling ribs.
  • the cut edge of the casing may be bevelled and smoothed before the patch assembly is inserted.
  • the patch assembly of Fig. 1 comprises generally a cylindrical body 12 within which are contained an upper slip 14, a lower slip 16, a slip sleeve assembly 18, and a seal ring 20.
  • the slips 14 and 16 are formed with inwardly facing teeth inclined as shown such that, when set, the slips 14, 16 grip the casing 10 to resist relative movement in both directions.
  • the slip sleeve assembly 18 provides an upper slip sleeve 22 and a lower slip sleeve 24 each of which abuts its respective sleeve in a part-conical face, and a central portion 26 mounting a C-ring 28 which has an outwardly directed ratchet 30 cooperating with ratchet teeth 32 formed in the body 12.
  • the lower slip 16 is initially secured to the lower slip sleeve 24 by shear pins, one of which is seen at 34, but otherwise the slips 14, 16 and sleeve assembly 18 are axially movable within the body 12 and relative to each other.
  • the seal ring 20 (see also Fig. 2) comprises an upper ring portion 36 slidable within a cylindrical bore 38 of the body 12 and a tapered lower portion 40, described in greater detail below, cooperating with a tapered surface 42 of the body 12.
  • the upper ring portion 12 terminates in an annular shoulder 44 for cooperation with a stop shoulder 46 in the body 12.
  • a stop ring 48 is positioned between the seal ring 20 and the lower slip 16 and slip sleeve assembly 18.
  • the lower portion 40 of the seal ring 20 on its inner surface has a reducing shoulder 50 and three annular ribs 52 of triangular cross-section, while the outer surface is reduced at sloping shoulders 54 in the proximity of the upper ribs 52.
  • the assembly is lowered over the cut end of the casing 10.
  • the casing enters through the lower slip 16, whose i.d. should be slightly larger than the casing o.d., for example 13 1/2 inch for 13 3/8 inch casing.
  • the upper slip 14 has an i.d. equal to the casing nominal o.d.
  • the upper slip sleeve 22 is retained by a retaining rib 56 in the body 12 while the slip 14 is free to move axially up to a shoulder 58, thus allowing the casing 10 to pass through.
  • the seal ring 20 is of a material which is resistant to temperature effects and well fluids, and has acceptable strength and good ductility.
  • the invention is based on the use of a metal-to-metal seal in which the seal ring deforms and the internal ribs 52 flow plastically into imperfections on the surface of the casing o.d., such as scratches and tong marks, and voids caused by ovality and lack of concentricity are filled.
  • Presently preferred materials for this purpose are low alloy steels.
  • a particularly preferred material is low alloy Cr-Ni-Mo steel with carbon content of 0.18-0.23%, to SAE 8620. Other materials having similar hardness, strength and ductility may be used.
  • annular ribs which are sufficiently narrow to deform plastically at the loads applied produces a wiping action across the casing o.d. to fill imperfections. It is believed that three ribs will be optimal, but a smaller number may be satisfactory, or a larger number may be required for some uses.
  • the rib cross-section may be substantially triangular, as shown, or may be of other configurations such as part-circular. It is desirable that the ribs initially make a line contact with the casing.
  • external "bumps" such as the sloping shoulders 54 is also a preferred feature of the invention. These distribute the load from the tapered face 42 in such a manner as to stress the ribs 52 and encourage plastic flow.
  • the outer face of the seal ring lower portion 40 will also undergo plastic deformation to form a face-to-face seal with the body 12.
  • the embodiment described is a dual patch, that is it locks against relative movement between patch and casing in both directions. This is desirable as the patch can withstand thermally induced movements in the casing string without affecting the load setting the seal. In some circumstances, however, a single-direction patch may be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Tubes (AREA)
  • Sealing Devices (AREA)
  • Gasket Seals (AREA)

Claims (10)

  1. Ensemble de réparation de cuvelage comprenant un corps (12) généralement cylindrique pour être positionné par dessus l'extrémité d'un cuvelage coupé (10), des moyens (14, 16, 22, 24) à l'intérieur du corps (12) pour agripper le cuvelage (10), et un joint annulaire (20) qui lors de l'utilisation est interposé entre le corps (12) et une surface extérieure du cuvelage (10), caractérisé en ce que le joint annulaire (20) est pourvu d'une pluralité de nervures (52) entourant la surface extérieure du cuvelage (10) ; et le corps (12) ayant une forme intérieure en coin de telle façon qu'une force axiale appliquée au corps (12) produit une force de compression radiale sur le joint annulaire (20) ; et le joint annulaire (20) étant fait en un métal ayant une résistance et une ductilité telles que ladite force de compression produit une déformation plastique desdites nervures (52) forcées par ladite compression contre la surface extérieure du cuvelage (10) pour former un joint métal sur métal quelque soient les imperfections de surface extérieure du cuvelage (10).
  2. Ensemble de réparation de cuvelage selon la revendication 1, dans lequel le moyen pour agripper comprend des coulisseaux supérieur (14) et inférieur (16) en opposition ayant chacun une surface intérieure dentée pour agripper le cuvelage (10) et une surface extérieure tronconique pour coopérer avec une douille coulissante correspondante (22, 24).
  3. Ensemble de réparation de cuvelage selon la revendication 2, dans lequel les douilles coulissantes supérieure et inférieure (22, 24) forment une partie d'un ensemble de douilles (22-30) connectées au corps (12) d'ensemble de réparation par l'intermédiaire d'un moyen d'encliquetage (28, 30, 32).
  4. Joint annulaire (20) pour utilisation dans un ensemble de réparation de cuvelage de la revendication 1, le joint annulaire (20) comprenant un corps généralement cylindrique (36, 40) ayant une surface intérieure formée avec une pluralité de nervures (52) circulaires décalées axialement.
  5. Joint annulaire (20) de la revendication 4, dans lequel lesdites nervures (52) sont annulaires et ont une section transversale produisant une ligne de contact avec un cuvelage (10) lorsqu'elles sont adaptées sur lui.
  6. Joint annulaire (20) de la revendication 4 ou de la revendication 5, dans lequel l'épaisseur de paroi dudit corps généralement cylindrique (36, 40) se réduit vers l'une de ses extrémités (40).
  7. Joint annulaire (20) de la revendication 6, dans lequel l'épaisseur de paroi est réduite par paliers (54) dans la surface extérieure, l'un desdits paliers (54) étant prévu à proximité de chaque nervure (52).
  8. Joint annulaire (20) de la revendication 6 ou de la revendication 7, dans lequel l'autre extrémité est conformée pour présenter un épaulement (36) se développant axialement pour être engagé par un épaulement (38) sur le corps cylindrique (12) de l'ensemble de réparation.
  9. Joint annulaire (20) de l'une quelconque des revendications 4 à 8, formé d'un acier à faible teneur en carbone.
  10. Joint annulaire (20) de la revendication 9, ledit acier étant un acier au chrome-nickel-molybdène avec une teneur en carbone de 0,18 à 0,23 %.
EP19900309981 1989-09-12 1990-09-12 Ensemble de réparation avec joint métallique de cuvelage Expired - Lifetime EP0418056B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898920607A GB8920607D0 (en) 1989-09-12 1989-09-12 Metal seal casing patch
GB8920607 1989-09-12

Publications (2)

Publication Number Publication Date
EP0418056A1 EP0418056A1 (fr) 1991-03-20
EP0418056B1 true EP0418056B1 (fr) 1995-11-08

Family

ID=10662942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900309981 Expired - Lifetime EP0418056B1 (fr) 1989-09-12 1990-09-12 Ensemble de réparation avec joint métallique de cuvelage

Country Status (4)

Country Link
EP (1) EP0418056B1 (fr)
DE (1) DE69023443D1 (fr)
GB (1) GB8920607D0 (fr)
NO (1) NO301657B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8167312B2 (en) 2008-07-10 2012-05-01 Vetco Gray Inc. Metal seal adjustable casing sub
US10612349B2 (en) 2013-11-06 2020-04-07 Halliburton Energy Services, Inc. Downhole casing patch
WO2022109014A1 (fr) * 2020-11-17 2022-05-27 Mohawk Energy Ltd. Système de pièce de réparation pour tubage

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU646589B2 (en) * 1991-08-22 1994-02-24 Vinidex Tubemakers Pty. Limited Lining of bores
US5829524A (en) * 1996-05-07 1998-11-03 Baker Hughes Incorporated High pressure casing patch
US6021850A (en) * 1997-10-03 2000-02-08 Baker Hughes Incorporated Downhole pipe expansion apparatus and method
US6073692A (en) * 1998-03-27 2000-06-13 Baker Hughes Incorporated Expanding mandrel inflatable packer
US6598677B1 (en) 1999-05-20 2003-07-29 Baker Hughes Incorporated Hanging liners by pipe expansion
AU2002343395A1 (en) * 2001-09-20 2003-04-01 Fmc Technologies, Inc. Fluid seal and method of using same
GB2381282B (en) * 2001-10-26 2004-03-24 Schlumberger Holdings Brake system
AU2013239039B2 (en) * 2006-11-09 2015-09-03 Baker Hughes Incorporated Large bore packer and methods of setting same
US20080110643A1 (en) * 2006-11-09 2008-05-15 Baker Hughes Incorporated Large bore packer and methods of setting same
US7540329B2 (en) * 2007-04-18 2009-06-02 Baker Hughes Incorporated Casing coupler liner hanger mechanism
CN105464611B (zh) * 2014-08-29 2019-01-22 中国石油化工股份有限公司 用于膨胀波纹管的装置
SE1451380A1 (en) * 2014-11-17 2016-05-18 Vanguard Oil Tools & Services Llc Retrievable re-connecting device with internal seal and slips for connecting to the top of an existing tubing in a wellbore
US10309562B2 (en) 2017-07-18 2019-06-04 Freudenberg Oil & Gas, Llc Metal to metal wedge ring seal
CN110529055A (zh) * 2019-08-30 2019-12-03 江苏璞腾油气装备有限公司 一种高抗扭气密封油套管螺纹接头
US11286743B2 (en) 2019-12-13 2022-03-29 Coretrax Americas Ltd. Wire line deployable metal patch stackable system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3865408A (en) * 1972-11-01 1975-02-11 Otis Eng Co Positive locking sealing connector for well pipe
US4791987A (en) * 1987-04-30 1988-12-20 Cameron Iron Works Usa, Inc. Wellhead seal

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8167312B2 (en) 2008-07-10 2012-05-01 Vetco Gray Inc. Metal seal adjustable casing sub
US8777228B2 (en) 2008-07-10 2014-07-15 Vetco Gray Inc. Metal sealing adjustable casing sub
US10612349B2 (en) 2013-11-06 2020-04-07 Halliburton Energy Services, Inc. Downhole casing patch
US11193357B2 (en) 2013-11-06 2021-12-07 Halliburton Energy Services, Inc. Downhole casing patch
WO2022109014A1 (fr) * 2020-11-17 2022-05-27 Mohawk Energy Ltd. Système de pièce de réparation pour tubage
GB2615701A (en) * 2020-11-17 2023-08-16 Coretrax Americas Ltd Casing patch system

Also Published As

Publication number Publication date
EP0418056A1 (fr) 1991-03-20
NO903984D0 (no) 1990-09-12
NO301657B1 (no) 1997-11-24
GB8920607D0 (en) 1989-10-25
DE69023443D1 (de) 1995-12-14
NO903984L (no) 1991-03-13

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