BR9509169A - Centralizers - Google Patents

Centralizers

Info

Publication number
BR9509169A
BR9509169A BR9509169A BR9509169A BR9509169A BR 9509169 A BR9509169 A BR 9509169A BR 9509169 A BR9509169 A BR 9509169A BR 9509169 A BR9509169 A BR 9509169A BR 9509169 A BR9509169 A BR 9509169A
Authority
BR
Brazil
Prior art keywords
centralizers
Prior art date
Application number
BR9509169A
Other languages
Portuguese (pt)
Inventor
Arnold Stokka
Original Assignee
Weatherford Lamb
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
Priority claimed from GB9419313A external-priority patent/GB9419313D0/en
Application filed by Weatherford Lamb filed Critical Weatherford Lamb
Publication of BR9509169A publication Critical patent/BR9509169A/en

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

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)
  • Casings For Electric Apparatus (AREA)
  • Earth Drilling (AREA)
  • Stackable Containers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
BR9509169A 1994-09-24 1995-09-25 Centralizers BR9509169A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9419313A GB9419313D0 (en) 1994-09-24 1994-09-24 Centralisers
US08/388,603 US5566754A (en) 1994-09-24 1995-02-14 Centralisers
PCT/GB1995/002272 WO1996009459A1 (en) 1994-09-24 1995-09-25 Centralisers

Publications (1)

Publication Number Publication Date
BR9509169A true BR9509169A (en) 1997-09-30

Family

ID=26305686

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9509169A BR9509169A (en) 1994-09-24 1995-09-25 Centralizers

Country Status (7)

Country Link
EP (1) EP0782660B1 (en)
CN (1) CN1159848A (en)
AU (1) AU691665B2 (en)
BR (1) BR9509169A (en)
CA (1) CA2198619C (en)
DE (1) DE69524109T2 (en)
WO (1) WO1996009459A1 (en)

Families Citing this family (6)

* 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
GB9715006D0 (en) * 1997-07-15 1997-09-24 Weatherford Lamb Centralizer
GB2331534B (en) * 1998-02-23 2000-01-19 Weatherford Lamb Centralizer
US6494274B1 (en) 1998-03-05 2002-12-17 Weatherford/Lamb, Inc. Axle, a friction reducing fitting and an axle installation method
AU760978B2 (en) 1999-01-22 2003-05-29 Weatherford Technology Holdings, Llc Friction reducing tool and method for its use in a wellbore
WO2021163759A1 (en) * 2020-02-18 2021-08-26 Kwik-Zip Pty Ltd A spacer segment and a spacer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1997880A (en) * 1932-03-25 1935-04-16 Louis T Watry Guide coupling
US2389906A (en) * 1944-02-03 1945-11-27 Willis J Heard Rod guide
US2602512A (en) * 1949-02-12 1952-07-08 Baker Oil Tools Inc Casing centering device
US2622684A (en) * 1950-01-26 1952-12-23 Kluck Louis Rib type casing centralizer
GB682362A (en) * 1950-12-18 1952-11-05 Baker Oil Tools Inc A centring device for centring conduits and the like in well bores
US3666013A (en) * 1969-12-30 1972-05-30 Texaco Inc Reinforced concrete stabilizer for an insulated tubing string in a secondary recovery steam stimulation operation
US3762472A (en) * 1972-07-24 1973-10-02 Gem Oil Tool Co Casing stand-off band for use during the running and cementing of casing in wellbores
CA1231642A (en) * 1985-02-22 1988-01-19 Raymond F. Mikolajczyk Casing centralizer/stabilizer
US5377751A (en) * 1992-01-29 1995-01-03 Rickert Precision Industries Apparatus and method for centralizing downhole pipe and blast joints

Also Published As

Publication number Publication date
AU691665B2 (en) 1998-05-21
DE69524109D1 (en) 2002-01-03
EP0782660B1 (en) 2001-11-21
DE69524109T2 (en) 2002-06-06
CN1159848A (en) 1997-09-17
CA2198619C (en) 2005-08-02
EP0782660A1 (en) 1997-07-09
WO1996009459A1 (en) 1996-03-28
AU3570595A (en) 1996-04-09
CA2198619A1 (en) 1996-03-28

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Legal Events

Date Code Title Description
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B25A Requested transfer of rights approved

Owner name: WEATHERFORD TECHNOLOGY HOLDING, LLC (US)

B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 25/09/2015