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GB2391570B - An adjustable centralising device - Google Patents

An adjustable centralising device

Info

Publication number
GB2391570B
GB2391570B GB0318520A GB0318520A GB2391570B GB 2391570 B GB2391570 B GB 2391570B GB 0318520 A GB0318520 A GB 0318520A GB 0318520 A GB0318520 A GB 0318520A GB 2391570 B GB2391570 B GB 2391570B
Authority
GB
United Kingdom
Prior art keywords
adjustable
centralising device
centralising
adjustable centralising
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 - Fee Related
Application number
GB0318520A
Other versions
GB2391570A (en
GB0318520D0 (en
Inventor
David Goffin
Martin Bunn
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.)
PARAMODE Ltd
Original Assignee
PARAMODE 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 PARAMODE Ltd filed Critical PARAMODE Ltd
Publication of GB0318520D0 publication Critical patent/GB0318520D0/en
Publication of GB2391570A publication Critical patent/GB2391570A/en
Application granted granted Critical
Publication of GB2391570B publication Critical patent/GB2391570B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
    • 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
    • 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

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)
GB0318520A 2002-08-07 2003-08-07 An adjustable centralising device Expired - Fee Related GB2391570B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0218312.7A GB0218312D0 (en) 2002-08-07 2002-08-07 An adjustable centralising device

Publications (3)

Publication Number Publication Date
GB0318520D0 GB0318520D0 (en) 2003-09-10
GB2391570A GB2391570A (en) 2004-02-11
GB2391570B true GB2391570B (en) 2006-01-25

Family

ID=9941879

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0218312.7A Ceased GB0218312D0 (en) 2002-08-07 2002-08-07 An adjustable centralising device
GB0318520A Expired - Fee Related GB2391570B (en) 2002-08-07 2003-08-07 An adjustable centralising device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0218312.7A Ceased GB0218312D0 (en) 2002-08-07 2002-08-07 An adjustable centralising device

Country Status (1)

Country Link
GB (2) GB0218312D0 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2417505B (en) * 2004-08-28 2008-06-25 U W G Ltd Centraliser
GB201116263D0 (en) * 2011-09-20 2011-11-02 Mcpeake Kieran An animal cubicle
GB201116236D0 (en) * 2011-09-20 2011-11-02 Claxton Engineering Services Ltd Centralizer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277337A (en) * 1993-04-20 1994-10-26 Conoco Inc Apparatus and method for centralizing pipe in a wellbore
GB2277336A (en) * 1993-04-06 1994-10-26 Uwg Ltd Centraliser
GB2366580A (en) * 2000-09-06 2002-03-13 Casetech International Inc A multi-diameter centraliser
GB2381280A (en) * 2001-10-23 2003-04-30 Uwg Ltd Adjustable centraliser with separate control tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277336A (en) * 1993-04-06 1994-10-26 Uwg Ltd Centraliser
GB2277337A (en) * 1993-04-20 1994-10-26 Conoco Inc Apparatus and method for centralizing pipe in a wellbore
GB2366580A (en) * 2000-09-06 2002-03-13 Casetech International Inc A multi-diameter centraliser
GB2381280A (en) * 2001-10-23 2003-04-30 Uwg Ltd Adjustable centraliser with separate control tool

Also Published As

Publication number Publication date
GB2391570A (en) 2004-02-11
GB0218312D0 (en) 2002-09-11
GB0318520D0 (en) 2003-09-10

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Legal Events

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

Effective date: 20130807