GB2378970B - Improved subsurface safety valve - Google Patents

Improved subsurface safety valve

Info

Publication number
GB2378970B
GB2378970B GB0228008A GB0228008A GB2378970B GB 2378970 B GB2378970 B GB 2378970B GB 0228008 A GB0228008 A GB 0228008A GB 0228008 A GB0228008 A GB 0228008A GB 2378970 B GB2378970 B GB 2378970B
Authority
GB
United Kingdom
Prior art keywords
safety valve
subsurface safety
improved subsurface
improved
valve
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
GB0228008A
Other versions
GB0228008D0 (en
GB2378970A (en
Inventor
David E Mccalvin
Thomas M Deaton
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.)
Schlumberger Holdings Ltd
Original Assignee
Schlumberger Holdings 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 US09/687,589 external-priority patent/US6513594B1/en
Application filed by Schlumberger Holdings Ltd filed Critical Schlumberger Holdings Ltd
Publication of GB0228008D0 publication Critical patent/GB0228008D0/en
Publication of GB2378970A publication Critical patent/GB2378970A/en
Application granted granted Critical
Publication of GB2378970B publication Critical patent/GB2378970B/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)
  • Safety Valves (AREA)
GB0228008A 2000-10-13 2001-10-03 Improved subsurface safety valve Expired - Fee Related GB2378970B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/687,589 US6513594B1 (en) 2000-10-13 2000-10-13 Subsurface safety valve
GB0123687A GB2371060B (en) 2000-10-13 2001-10-03 Improved subsurface safety valve

Publications (3)

Publication Number Publication Date
GB0228008D0 GB0228008D0 (en) 2003-01-08
GB2378970A GB2378970A (en) 2003-02-26
GB2378970B true GB2378970B (en) 2003-04-23

Family

ID=26246604

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0228008A Expired - Fee Related GB2378970B (en) 2000-10-13 2001-10-03 Improved subsurface safety valve

Country Status (1)

Country Link
GB (1) GB2378970B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003062595A1 (en) * 2002-01-22 2003-07-31 Baker Hughes Incorporated System and method for a failsafe control of a downhole valve in the event of tubing rupture
GB0414128D0 (en) * 2004-06-24 2004-07-28 Renovus Ltd Valve
GB2457497B (en) 2008-02-15 2012-08-08 Pilot Drilling Control Ltd Flow stop valve
AP2012006165A0 (en) 2009-08-18 2012-04-30 Pilot Drilling Control Ltd Flow stop valve.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660646A (en) * 1985-11-27 1987-04-28 Camco, Incorporated Failsafe gas closed safety valve

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660646A (en) * 1985-11-27 1987-04-28 Camco, Incorporated Failsafe gas closed safety valve

Also Published As

Publication number Publication date
GB0228008D0 (en) 2003-01-08
GB2378970A (en) 2003-02-26

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Legal Events

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

Effective date: 20111003