GB1532853A - Devices for centralising pipes in borings - Google Patents

Devices for centralising pipes in borings

Info

Publication number
GB1532853A
GB1532853A GB678576A GB678576A GB1532853A GB 1532853 A GB1532853 A GB 1532853A GB 678576 A GB678576 A GB 678576A GB 678576 A GB678576 A GB 678576A GB 1532853 A GB1532853 A GB 1532853A
Authority
GB
United Kingdom
Prior art keywords
centralising
borings
pipes
devices
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.)
Expired
Application number
GB678576A
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.)
CASLAKE Ltd J
Original Assignee
CASLAKE Ltd J
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 CASLAKE Ltd J filed Critical CASLAKE Ltd J
Priority to GB678576A priority Critical patent/GB1532853A/en
Publication of GB1532853A publication Critical patent/GB1532853A/en
Expired 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)
  • Earth Drilling (AREA)

Abstract

1532853 Wells &c J CASLAKE Ltd 5 May 1977 [20 Feb 1976] 06785/76 Heading E1F In a casing centralizer the end portions 24 of the blades 11. underlie the collars 9, have out-turned ends 20 passing through slots 16 in the collars 9 and are secured to the collars 9 by rivets 31.
GB678576A 1977-05-05 1977-05-05 Devices for centralising pipes in borings Expired GB1532853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB678576A GB1532853A (en) 1977-05-05 1977-05-05 Devices for centralising pipes in borings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB678576A GB1532853A (en) 1977-05-05 1977-05-05 Devices for centralising pipes in borings

Publications (1)

Publication Number Publication Date
GB1532853A true GB1532853A (en) 1978-11-22

Family

ID=9820709

Family Applications (1)

Application Number Title Priority Date Filing Date
GB678576A Expired GB1532853A (en) 1977-05-05 1977-05-05 Devices for centralising pipes in borings

Country Status (1)

Country Link
GB (1) GB1532853A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148985A (en) * 1983-10-31 1985-06-05 Baker Oil Tools Inc Segmented concentric centraliser
US4545436A (en) * 1984-01-20 1985-10-08 Antelope Oil Tool & Manufacturing Company Centralizer band-collar connection
GB2242457A (en) * 1990-03-27 1991-10-02 Petroleum Equipment Company Li Casing centralisers
WO2008134333A1 (en) * 2007-04-24 2008-11-06 Frank's International, Inc. Field-assemblable bow-spring casing centralizer and method of making a centralizer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148985A (en) * 1983-10-31 1985-06-05 Baker Oil Tools Inc Segmented concentric centraliser
US4545436A (en) * 1984-01-20 1985-10-08 Antelope Oil Tool & Manufacturing Company Centralizer band-collar connection
GB2242457A (en) * 1990-03-27 1991-10-02 Petroleum Equipment Company Li Casing centralisers
WO2008134333A1 (en) * 2007-04-24 2008-11-06 Frank's International, Inc. Field-assemblable bow-spring casing centralizer and method of making a centralizer

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee