GB2361019B - Improved casing centraliser - Google Patents

Improved casing centraliser

Info

Publication number
GB2361019B
GB2361019B GB0108426A GB0108426A GB2361019B GB 2361019 B GB2361019 B GB 2361019B GB 0108426 A GB0108426 A GB 0108426A GB 0108426 A GB0108426 A GB 0108426A GB 2361019 B GB2361019 B GB 2361019B
Authority
GB
United Kingdom
Prior art keywords
improved casing
casing centraliser
centraliser
improved
casing
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
GB0108426A
Other versions
GB0108426D0 (en
GB2361019A (en
Inventor
Harry Whitelaw
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.)
Polyoil Ltd
Original Assignee
Polyoil 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 Polyoil Ltd filed Critical Polyoil Ltd
Publication of GB0108426D0 publication Critical patent/GB0108426D0/en
Publication of GB2361019A publication Critical patent/GB2361019A/en
Application granted granted Critical
Publication of GB2361019B publication Critical patent/GB2361019B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21B17/1042—Elastomer protector or centering means

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)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
GB0108426A 2000-04-08 2001-04-04 Improved casing centraliser Expired - Lifetime GB2361019B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0008594A GB0008594D0 (en) 2000-04-08 2000-04-08 Improved casing centraliser

Publications (3)

Publication Number Publication Date
GB0108426D0 GB0108426D0 (en) 2001-05-23
GB2361019A GB2361019A (en) 2001-10-10
GB2361019B true GB2361019B (en) 2004-06-23

Family

ID=9889440

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0008594A Ceased GB0008594D0 (en) 2000-04-08 2000-04-08 Improved casing centraliser
GB0108426A Expired - Lifetime GB2361019B (en) 2000-04-08 2001-04-04 Improved casing centraliser

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0008594A Ceased GB0008594D0 (en) 2000-04-08 2000-04-08 Improved casing centraliser

Country Status (1)

Country Link
GB (2) GB0008594D0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111963079A (en) * 2020-10-21 2020-11-20 胜利油田固邦石油装备有限责任公司 Fixing device for casing centralizer

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0016146D0 (en) * 2000-06-30 2000-08-23 Brunel Oilfield Serv Uk Ltd Improvements in or relating to downhole tools
GB2385342B (en) * 2002-02-05 2006-05-17 Polyoil Ltd Improved downhole device
GB0207851D0 (en) * 2002-04-05 2002-05-15 Sps Afos Group Ltd Stabiliser jetting and circulating tool
CN101775963B (en) * 2010-01-15 2012-07-11 杨永利 Nylon66-packaged ceramic pellet centering guide
NO331929B1 (en) * 2010-06-16 2012-05-07 Statoil Asa Centering Device
CN104948122A (en) * 2014-03-26 2015-09-30 中国石油化工集团公司 Ball type centralizer for threaded rod drilling tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2275284A (en) * 1993-02-19 1994-08-24 Graeme Kenneth Speirs Drill pipe protector
GB2329209A (en) * 1997-02-21 1999-03-17 Downhole Products Plc Casing centraliser
GB2347953A (en) * 1997-11-15 2000-09-20 Brunel Oilfield Services Improvements in or relating to downhole tools

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2275284A (en) * 1993-02-19 1994-08-24 Graeme Kenneth Speirs Drill pipe protector
GB2329209A (en) * 1997-02-21 1999-03-17 Downhole Products Plc Casing centraliser
GB2347953A (en) * 1997-11-15 2000-09-20 Brunel Oilfield Services Improvements in or relating to downhole tools

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111963079A (en) * 2020-10-21 2020-11-20 胜利油田固邦石油装备有限责任公司 Fixing device for casing centralizer
CN111963079B (en) * 2020-10-21 2020-12-18 胜利油田固邦石油装备有限责任公司 Fixing device for casing centralizer

Also Published As

Publication number Publication date
GB0108426D0 (en) 2001-05-23
GB0008594D0 (en) 2000-05-31
GB2361019A (en) 2001-10-10

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20140612 AND 20140618

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20161124 AND 20161130

PE20 Patent expired after termination of 20 years

Expiry date: 20210403