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WO1991008374A3 - Apparatus and method for centralising a casing - Google Patents

Apparatus and method for centralising a casing

Info

Publication number
WO1991008374A3
WO1991008374A3 PCT/GB1990/001891 GB9001891W WO9108374A3 WO 1991008374 A3 WO1991008374 A3 WO 1991008374A3 GB 9001891 W GB9001891 W GB 9001891W WO 9108374 A3 WO9108374 A3 WO 9108374A3
Authority
WO
WIPO (PCT)
Prior art keywords
casing
centraliser
stop collar
centralising
end collars
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.)
Ceased
Application number
PCT/GB1990/001891
Other languages
French (fr)
Other versions
WO1991008374A2 (en
Inventor
Doug Morrison
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.)
Lasalle Engineering Ltd
Original Assignee
Lasalle Engineering Ltd
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 Lasalle Engineering Ltd filed Critical Lasalle Engineering Ltd
Publication of WO1991008374A2 publication Critical patent/WO1991008374A2/en
Publication of WO1991008374A3 publication Critical patent/WO1991008374A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
    • E21B17/1021—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs
    • E21B17/1028—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs with arcuate springs only, e.g. baskets with outwardly bowed strips for cementing operations

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Lighters Containing Fuel (AREA)
  • Harvester Elements (AREA)

Abstract

Apparatus for centralising a casing comprises a centraliser (10), for example, a bow centraliser, having a plurality of spring bows (24) connecting to spaced end collars (20). A stop collar (12) is secured on to the casing (2). The stop collar (12) is arranged on the casing (2) between the two end collars (20) of the centraliser (10) within the spring bows (24) so that the stop collar (12) selectively abuts one of the end collars (20) and retains the centraliser on the casing. The stop collar (12) is arranged to be adhered to the casing (2) and for added security, grips the adhesive bond.
PCT/GB1990/001891 1989-12-05 1990-12-05 Apparatus and method for centralising a casing Ceased WO1991008374A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898927502A GB8927502D0 (en) 1989-12-05 1989-12-05 Improvements in or relating to an apparatus and method for centralising a casing
GB8927502.8 1989-12-05

Publications (2)

Publication Number Publication Date
WO1991008374A2 WO1991008374A2 (en) 1991-06-13
WO1991008374A3 true WO1991008374A3 (en) 1991-10-31

Family

ID=10667459

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1990/001891 Ceased WO1991008374A2 (en) 1989-12-05 1990-12-05 Apparatus and method for centralising a casing

Country Status (3)

Country Link
AU (1) AU7896491A (en)
GB (1) GB8927502D0 (en)
WO (1) WO1991008374A2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2316422A (en) * 1996-08-24 1998-02-25 Weatherford Lamb Centralizer
GB2331534B (en) 1998-02-23 2000-01-19 Weatherford Lamb Centralizer
EP1060321B1 (en) 1998-03-05 2003-07-16 Weatherford/Lamb, Inc. An axle, a friction reducing fitting and an axle installation method
EP1144796B1 (en) 1999-01-22 2004-01-02 Weatherford/Lamb, Inc. Friction reducing tool and method for its use in a wellbore
RU2224871C2 (en) * 2001-04-13 2004-02-27 Общество с ограниченной ответственностью "Сибироника" Centering device for casing strings
US20080035331A1 (en) * 2006-06-28 2008-02-14 Jean Buytaert Epoxy secured web collar
US8196654B2 (en) 2007-05-16 2012-06-12 Frank's International, Inc. Expandable centralizer for expandable pipe string
US9771763B2 (en) 2007-05-16 2017-09-26 Antelope Oil Tool & Mfg. Co. Low-clearance centralizer
US7878241B2 (en) 2007-05-16 2011-02-01 Frank's International, Inc. Expandable centralizer for expandable pipe string
US8763690B2 (en) 2007-05-16 2014-07-01 Antelope Oil Tool & Mfg. Co., Llc Casing centralizers having flexible bow springs
US8701783B2 (en) 2007-07-26 2014-04-22 Antelope Oil Tool & Mfg. Co., Llc Apparatus for and method of deploying a centralizer installed on an expandable casing string
US7845061B2 (en) 2007-05-16 2010-12-07 Frank's International, Inc. Low clearance centralizer and method of making centralizer
US8360161B2 (en) 2008-09-29 2013-01-29 Frank's International, Inc. Downhole device actuator and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1820391A (en) * 1930-04-02 1931-08-25 Hartman William Walter Stabilizer
US3055432A (en) * 1960-06-23 1962-09-25 Baker Oil Tools Inc Well conduit centering devices
US3124196A (en) * 1964-03-10 Helical bow centralizer
US3209836A (en) * 1963-02-01 1965-10-05 Trojan Inc Strong bow centralizer
US4088186A (en) * 1976-12-22 1978-05-09 Baker International Corporation Centering device for well conduit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124196A (en) * 1964-03-10 Helical bow centralizer
US1820391A (en) * 1930-04-02 1931-08-25 Hartman William Walter Stabilizer
US3055432A (en) * 1960-06-23 1962-09-25 Baker Oil Tools Inc Well conduit centering devices
US3209836A (en) * 1963-02-01 1965-10-05 Trojan Inc Strong bow centralizer
US4088186A (en) * 1976-12-22 1978-05-09 Baker International Corporation Centering device for well conduit

Also Published As

Publication number Publication date
GB8927502D0 (en) 1990-02-07
WO1991008374A2 (en) 1991-06-13
AU7896491A (en) 1991-06-26

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