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GB2293843B - Improvements in or relating to downhole tool assemblies - Google Patents

Improvements in or relating to downhole tool assemblies

Info

Publication number
GB2293843B
GB2293843B GB9525208A GB9525208A GB2293843B GB 2293843 B GB2293843 B GB 2293843B GB 9525208 A GB9525208 A GB 9525208A GB 9525208 A GB9525208 A GB 9525208A GB 2293843 B GB2293843 B GB 2293843B
Authority
GB
United Kingdom
Prior art keywords
relating
downhole tool
tool assemblies
assemblies
downhole
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
GB9525208A
Other versions
GB9525208D0 (en
GB2293843A (en
Inventor
George Telfer
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.)
Nodeco Ltd
Original Assignee
Nodeco 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
Priority claimed from GB929217537A external-priority patent/GB9217537D0/en
Application filed by Nodeco Ltd filed Critical Nodeco Ltd
Publication of GB9525208D0 publication Critical patent/GB9525208D0/en
Publication of GB2293843A publication Critical patent/GB2293843A/en
Application granted granted Critical
Publication of GB2293843B publication Critical patent/GB2293843B/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
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/06—Releasing-joints, e.g. safety joints
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/124—Units with longitudinally-spaced plugs for isolating the intermediate space
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
    • E21B47/017—Protecting measuring instruments

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Geophysics (AREA)
  • Earth Drilling (AREA)
GB9525208A 1992-08-18 1993-08-18 Improvements in or relating to downhole tool assemblies Expired - Lifetime GB2293843B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB929217537A GB9217537D0 (en) 1992-08-18 1992-08-18 Improvements in or relating to protective arrangements
GB9503409A GB2284439B (en) 1992-08-18 1993-08-18 Protective arrangements for downhole tools

Publications (3)

Publication Number Publication Date
GB9525208D0 GB9525208D0 (en) 1996-02-07
GB2293843A GB2293843A (en) 1996-04-10
GB2293843B true GB2293843B (en) 1996-06-05

Family

ID=26301452

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9525208A Expired - Lifetime GB2293843B (en) 1992-08-18 1993-08-18 Improvements in or relating to downhole tool assemblies

Country Status (1)

Country Link
GB (1) GB2293843B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136853A (en) * 1983-03-24 1984-09-26 Texas Iron Works Liner and hydraulic liner hanger setting arrangement
GB2172633A (en) * 1985-02-28 1986-09-24 Otis Eng Co Rotating liner hanger and running tool
GB2213517A (en) * 1988-01-15 1989-08-16 Texas Iron Works Method and apparatus for manipulating well bore liner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136853A (en) * 1983-03-24 1984-09-26 Texas Iron Works Liner and hydraulic liner hanger setting arrangement
GB2172633A (en) * 1985-02-28 1986-09-24 Otis Eng Co Rotating liner hanger and running tool
GB2213517A (en) * 1988-01-15 1989-08-16 Texas Iron Works Method and apparatus for manipulating well bore liner

Also Published As

Publication number Publication date
GB9525208D0 (en) 1996-02-07
GB2293843A (en) 1996-04-10

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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)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20130817