GB2381284B - Non-conductive centraliser - Google Patents

Non-conductive centraliser

Info

Publication number
GB2381284B
GB2381284B GB0230128A GB0230128A GB2381284B GB 2381284 B GB2381284 B GB 2381284B GB 0230128 A GB0230128 A GB 0230128A GB 0230128 A GB0230128 A GB 0230128A GB 2381284 B GB2381284 B GB 2381284B
Authority
GB
United Kingdom
Prior art keywords
conductive centraliser
centraliser
conductive
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
GB0230128A
Other versions
GB2381284A (en
GB0230128D0 (en
Inventor
Thomas John Oliver Thornton
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.)
Brunel Oilfield Services UK Ltd
Original Assignee
Brunel Oilfield Services UK 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 Brunel Oilfield Services UK Ltd filed Critical Brunel Oilfield Services UK Ltd
Publication of GB0230128D0 publication Critical patent/GB0230128D0/en
Publication of GB2381284A publication Critical patent/GB2381284A/en
Application granted granted Critical
Publication of GB2381284B publication Critical patent/GB2381284B/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
    • E21B17/1078—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
    • E21B17/003—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings with electrically conducting or insulating means

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Casings For Electric Apparatus (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
GB0230128A 2000-06-30 2001-06-29 Non-conductive centraliser Expired - Lifetime GB2381284B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0016146A GB0016146D0 (en) 2000-06-30 2000-06-30 Improvements in or relating to downhole tools
PCT/GB2001/002947 WO2002004781A1 (en) 2000-06-30 2001-06-29 Nonconductive centralizer

Publications (3)

Publication Number Publication Date
GB0230128D0 GB0230128D0 (en) 2003-01-29
GB2381284A GB2381284A (en) 2003-04-30
GB2381284B true GB2381284B (en) 2006-01-04

Family

ID=9894808

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0016146A Ceased GB0016146D0 (en) 2000-06-30 2000-06-30 Improvements in or relating to downhole tools
GB0230128A Expired - Lifetime GB2381284B (en) 2000-06-30 2001-06-29 Non-conductive centraliser

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0016146A Ceased GB0016146D0 (en) 2000-06-30 2000-06-30 Improvements in or relating to downhole tools

Country Status (3)

Country Link
AU (1) AU2001267715A1 (en)
GB (2) GB0016146D0 (en)
WO (1) WO2002004781A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009047536A1 (en) * 2007-10-12 2009-04-16 Protech Centreform International Limited Downhole tubular product
US7604059B2 (en) 2000-06-30 2009-10-20 Brunel Oilfield Services (Uk) Limited Downhole tools

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2406591B (en) * 2003-09-17 2006-11-08 Karl Schmidt Centraliser formed from composite material for drill or production strings
GB0513734D0 (en) 2005-07-05 2005-08-10 Thornton Thomas J O Improved centraliser
US8863834B2 (en) 2009-04-07 2014-10-21 Antelope Oil Tool & Mfg. Co., Llc Friction reducing wear band and method of coupling a wear band to a tubular
GB2487736A (en) * 2011-02-01 2012-08-08 Claxton Engineering Services Ltd Centralizer
USD849800S1 (en) 2012-04-04 2019-05-28 Summit Energy Services, Inc. Casing centralizer having spiral blades
GB2506845B (en) 2012-09-05 2015-01-14 Advanced Composite Ind Ag Modified tubular
WO2014065677A1 (en) * 2012-10-24 2014-05-01 Tdtech Limited A centralisation system
US9057229B2 (en) 2013-03-14 2015-06-16 Summit Energy Services, Inc. Casing centralizer
WO2015031644A1 (en) 2013-08-28 2015-03-05 Antelope Oil Tool & Mfg. Co., Llc Chromium-free thermal spray composition, method, and apparatus
EP2878763A1 (en) * 2013-11-29 2015-06-03 Welltec A/S A downhole casing string
CN103628829B (en) * 2013-12-03 2016-01-13 林林 A kind of resin cyclone centralizer
US10584553B2 (en) 2016-04-28 2020-03-10 Innovex Downhole Solutions, Inc. Integrally-bonded swell packer

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2188119A (en) * 1939-03-03 1940-01-23 Robert B Prentice Centralizer and protector for an oil well string
WO1980000727A1 (en) * 1978-09-29 1980-04-17 Secretary Energy Brit Improvements in and relating to electrical power transmission in fluid wells
US5207273A (en) * 1990-09-17 1993-05-04 Production Technologies International Inc. Method and apparatus for pumping wells
US5269377A (en) * 1992-11-25 1993-12-14 Baker Hughes Incorporated Coil tubing supported electrical submersible pump
GB2329209A (en) * 1997-02-21 1999-03-17 Downhole Products Plc Casing centraliser
WO1999025949A2 (en) * 1997-11-15 1999-05-27 Brunel Oilfield Services (Uk) Limited Improvements in or relating to downhole tools
WO2001053653A1 (en) * 2000-01-19 2001-07-26 Cannon James H A polymeric centralizer
GB2361019A (en) * 2000-04-08 2001-10-10 Polyoil Ltd Polyamide Casing Centraliser

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2188119A (en) * 1939-03-03 1940-01-23 Robert B Prentice Centralizer and protector for an oil well string
WO1980000727A1 (en) * 1978-09-29 1980-04-17 Secretary Energy Brit Improvements in and relating to electrical power transmission in fluid wells
US5207273A (en) * 1990-09-17 1993-05-04 Production Technologies International Inc. Method and apparatus for pumping wells
US5269377A (en) * 1992-11-25 1993-12-14 Baker Hughes Incorporated Coil tubing supported electrical submersible pump
GB2329209A (en) * 1997-02-21 1999-03-17 Downhole Products Plc Casing centraliser
WO1999025949A2 (en) * 1997-11-15 1999-05-27 Brunel Oilfield Services (Uk) Limited Improvements in or relating to downhole tools
WO2001053653A1 (en) * 2000-01-19 2001-07-26 Cannon James H A polymeric centralizer
GB2361019A (en) * 2000-04-08 2001-10-10 Polyoil Ltd Polyamide Casing Centraliser

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7604059B2 (en) 2000-06-30 2009-10-20 Brunel Oilfield Services (Uk) Limited Downhole tools
WO2009047536A1 (en) * 2007-10-12 2009-04-16 Protech Centreform International Limited Downhole tubular product

Also Published As

Publication number Publication date
GB2381284A (en) 2003-04-30
GB0230128D0 (en) 2003-01-29
AU2001267715A1 (en) 2002-01-21
GB0016146D0 (en) 2000-08-23
WO2002004781A1 (en) 2002-01-17

Similar Documents

Publication Publication Date Title
GB0229946D0 (en) Centraliser
DZ3293A1 (en) Substituted arylpyrazines
GB2360535B (en) Centraliser
AU6227101A (en) Substituted iminoazines
GB2331534B (en) Centralizer
GB2381284B (en) Non-conductive centraliser
PL358119A1 (en) Substituted phenyluracils
PL357422A1 (en) Substituted benzoylcyclohexenones
HU0102695D0 (en) Centralizer sleeve
GB0030830D0 (en) Wellhead assembly
GB2381280B (en) Centraliser
GB2361019B (en) Improved casing centraliser
GB2367574B (en) Switches for downhole use
IL146525A0 (en) Marker
GB9927466D0 (en) Centraliser
AU2360402A (en) Substituted phenyluracils
GB0028423D0 (en) Eductional aid
GB9907750D0 (en) Wells
GB0030339D0 (en) Centraliser
GB0015206D0 (en) Centraliser
GB0028494D0 (en) Tassel-making aid
GB2379684B (en) Switches for downhole use
GB0004454D0 (en) Improved wells
GB2358803B (en) Orgone-acupuncture energizer
GB0006592D0 (en) Location logging

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 20150326 AND 20150401

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

Free format text: REGISTERED BETWEEN 20150813 AND 20150819

PE20 Patent expired after termination of 20 years

Expiry date: 20210628