GB2323872B - Subsurface safety valve - Google Patents

Subsurface safety valve

Info

Publication number
GB2323872B
GB2323872B GB9812112A GB9812112A GB2323872B GB 2323872 B GB2323872 B GB 2323872B GB 9812112 A GB9812112 A GB 9812112A GB 9812112 A GB9812112 A GB 9812112A GB 2323872 B GB2323872 B GB 2323872B
Authority
GB
United Kingdom
Prior art keywords
safety valve
subsurface safety
subsurface
valve
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.)
Expired - Fee Related
Application number
GB9812112A
Other versions
GB2323872A (en
GB9812112D0 (en
Inventor
Russell A Johnston
David A Bilberry
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.)
Camco International Inc
Original Assignee
Camco International Inc
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 US08/326,017 external-priority patent/US5598864A/en
Application filed by Camco International Inc filed Critical Camco International Inc
Publication of GB9812112D0 publication Critical patent/GB9812112D0/en
Publication of GB2323872A publication Critical patent/GB2323872A/en
Application granted granted Critical
Publication of GB2323872B publication Critical patent/GB2323872B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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)
  • Lift Valve (AREA)
GB9812112A 1994-10-19 1995-10-10 Subsurface safety valve Expired - Fee Related GB2323872B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/326,017 US5598864A (en) 1994-10-19 1994-10-19 Subsurface safety valve
GB9520680A GB2296519B (en) 1994-10-19 1995-10-10 Subsurface safety valve

Publications (3)

Publication Number Publication Date
GB9812112D0 GB9812112D0 (en) 1998-08-05
GB2323872A GB2323872A (en) 1998-10-07
GB2323872B true GB2323872B (en) 1999-02-24

Family

ID=26307919

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9812112A Expired - Fee Related GB2323872B (en) 1994-10-19 1995-10-10 Subsurface safety valve

Country Status (1)

Country Link
GB (1) GB2323872B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6854519B2 (en) 2002-05-03 2005-02-15 Weatherford/Lamb, Inc. Subsurface valve with system and method for sealing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172321A (en) * 1985-03-11 1986-09-17 Camco Inc High temperature subsurface safety valve
GB2188962A (en) * 1986-04-11 1987-10-14 Baker Oil Tools Inc Sealing system for downhole well valves
GB2191525A (en) * 1986-06-09 1987-12-16 Camco Inc High temperature subsurface safety valve
EP0521667A1 (en) * 1991-07-05 1993-01-07 Halliburton Company Safety valve sealing ring and seal assembly
GB2272922A (en) * 1992-11-20 1994-06-01 Halliburton Co Safety valve, sealing ring and seal assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172321A (en) * 1985-03-11 1986-09-17 Camco Inc High temperature subsurface safety valve
GB2188962A (en) * 1986-04-11 1987-10-14 Baker Oil Tools Inc Sealing system for downhole well valves
GB2191525A (en) * 1986-06-09 1987-12-16 Camco Inc High temperature subsurface safety valve
EP0521667A1 (en) * 1991-07-05 1993-01-07 Halliburton Company Safety valve sealing ring and seal assembly
GB2272922A (en) * 1992-11-20 1994-06-01 Halliburton Co Safety valve, sealing ring and seal assembly

Also Published As

Publication number Publication date
GB2323872A (en) 1998-10-07
GB9812112D0 (en) 1998-08-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20071010