GB8304518D0 - Downhole safety systems - Google Patents

Downhole safety systems

Info

Publication number
GB8304518D0
GB8304518D0 GB838304518A GB8304518A GB8304518D0 GB 8304518 D0 GB8304518 D0 GB 8304518D0 GB 838304518 A GB838304518 A GB 838304518A GB 8304518 A GB8304518 A GB 8304518A GB 8304518 D0 GB8304518 D0 GB 8304518D0
Authority
GB
United Kingdom
Prior art keywords
safety systems
downhole safety
downhole
systems
safety
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.)
Granted
Application number
GB838304518A
Other versions
GB2119831A (en
GB2119831B (en
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.)
Otis Engineering Corp
Original Assignee
Otis Engineering Corp
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 Otis Engineering Corp filed Critical Otis Engineering Corp
Publication of GB8304518D0 publication Critical patent/GB8304518D0/en
Publication of GB2119831A publication Critical patent/GB2119831A/en
Application granted granted Critical
Publication of GB2119831B publication Critical patent/GB2119831B/en
Expired 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
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
    • E21B34/105—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole retrievable, e.g. wire line retrievable, i.e. with an element which can be landed into a landing-nipple provided with a passage for control fluid
    • 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
    • E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
    • E21B2200/05—Flapper valves

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Safety Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
GB08304518A 1982-05-07 1983-02-18 Downhole safety systems for use while servicing wells Expired GB2119831B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37602182A 1982-05-07 1982-05-07

Publications (3)

Publication Number Publication Date
GB8304518D0 true GB8304518D0 (en) 1983-03-23
GB2119831A GB2119831A (en) 1983-11-23
GB2119831B GB2119831B (en) 1986-02-12

Family

ID=23483366

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08304518A Expired GB2119831B (en) 1982-05-07 1983-02-18 Downhole safety systems for use while servicing wells

Country Status (3)

Country Link
CA (1) CA1200193A (en)
GB (1) GB2119831B (en)
NO (1) NO160596C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT389373B (en) * 1987-08-04 1989-11-27 Vaillant Gmbh INJECTOR GAS BURNER
GB2223781B (en) * 1988-10-11 1992-06-10 Camco Inc Large bore retrievable well safety valve
NO313209B1 (en) * 2000-12-07 2002-08-26 Fmc Kongsberg Subsea As Device at downhole well protection valve
US6715555B2 (en) * 2002-08-01 2004-04-06 Dril-Quip, Inc. Subsea well production system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4420043A (en) * 1981-06-25 1983-12-13 Baker International Corporation Valving apparatus for selectively sealing an annulus defined between a work string and the bore of an element of a production string of a subterranean well

Also Published As

Publication number Publication date
GB2119831A (en) 1983-11-23
NO160596B (en) 1989-01-23
CA1200193A (en) 1986-02-04
GB2119831B (en) 1986-02-12
NO160596C (en) 1989-05-03
NO830607L (en) 1983-11-08

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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)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960218