GB1451510A - Ambient pressure responsive safety valve - Google Patents

Ambient pressure responsive safety valve

Info

Publication number
GB1451510A
GB1451510A GB5901673A GB5901673A GB1451510A GB 1451510 A GB1451510 A GB 1451510A GB 5901673 A GB5901673 A GB 5901673A GB 5901673 A GB5901673 A GB 5901673A GB 1451510 A GB1451510 A GB 1451510A
Authority
GB
United Kingdom
Prior art keywords
pressure
ambient pressure
piston
seat
closure member
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
Application number
GB5901673A
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 Technology Corp
Original Assignee
Schlumberger Technology 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 Schlumberger Technology Corp filed Critical Schlumberger Technology Corp
Publication of GB1451510A publication Critical patent/GB1451510A/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
    • E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7754—Line flow effect assisted
    • Y10T137/7756—Reactor surface separated from flow by apertured partition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface

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)

Abstract

1451510 Downhole well safety valves SCHLUMBERGER TECHNOLOGY CORP 20 Dec 1973 [29 Dec 1972] 59016/73 Heading E1F A downhole well safety valve has a main closure member 82 cooperable with a seat ring 70 arranged downstream of a further seat 212 cooperable with a flow restrictor member 210 which is normally held clear of seat 212 by ambient pressure acting thereon in opposition to a spring 208 and a gas pressure in chamber 170. The main closure member is connected to an operator sleeve 90 carrying a piston 134 responsive to ambient pressure acting upwards thereon over area A 1 in opposition to spring 112 and the pressure downstream of the seat ring 70 acting over area A 2 . The valve is adapted to be latched in a production string and if due to excess flow through the string, the ambient pressure falls to a level allowing the flow restrictor member 210 to approach seat 212, the consequent pressure differential arising across the piston 134 raises the latter and the operator sleeve 90 to engage closure member 82 with seat ring 70. The flow restrictor member returns to its lower position as the ambient pressure subsequently increases, and the closure member is movable to its open position by increasing the pressure in the production string until the pressure in the string acting on piston 134 depresses the latter against the action of the ambient pressure. Extension 135 of the piston cooperates with an extension 137 of sub 38 to discourage sand from accumulating above the seal ring 132 of the piston.
GB5901673A 1972-12-29 1973-12-20 Ambient pressure responsive safety valve Expired GB1451510A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00319183A US3814181A (en) 1972-12-29 1972-12-29 Ambient pressure responsive safety valve

Publications (1)

Publication Number Publication Date
GB1451510A true GB1451510A (en) 1976-10-06

Family

ID=23241199

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5901673A Expired GB1451510A (en) 1972-12-29 1973-12-20 Ambient pressure responsive safety valve

Country Status (5)

Country Link
US (1) US3814181A (en)
CA (1) CA994669A (en)
DE (1) DE2364328A1 (en)
FR (1) FR2212483B1 (en)
GB (1) GB1451510A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163794A (en) * 1984-08-29 1986-03-05 Camco Inc Fluid level controlled safety valve

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889751A (en) * 1974-02-01 1975-06-17 Exxon Production Research Co Subsurface safety valve
US4618000A (en) * 1985-02-08 1986-10-21 Halliburton Company Pump open safety valve and method of use
US4878053A (en) * 1985-05-03 1989-10-31 Develco, Inc. Actuation method
US4736791A (en) * 1985-05-03 1988-04-12 Develco, Inc. Subsurface device actuator requiring minimum power
DE3586323D1 (en) * 1985-09-19 1992-08-13 Ava Int Corp VALVES.
US4664195A (en) * 1986-01-31 1987-05-12 Otis Engineering Corporation Safety valve
US7201232B2 (en) 1998-08-21 2007-04-10 Bj Services Company Washpipeless isolation strings and methods for isolation with object holding service tool
US7124824B2 (en) * 2000-12-05 2006-10-24 Bj Services Company, U.S.A. Washpipeless isolation strings and methods for isolation
US6722440B2 (en) * 1998-08-21 2004-04-20 Bj Services Company Multi-zone completion strings and methods for multi-zone completions
USRE40648E1 (en) * 1998-08-21 2009-03-10 Bj Services Company, U.S.A. System and method for downhole operation using pressure activated valve and sliding sleeve
US7198109B2 (en) * 1998-08-21 2007-04-03 Bj Services Company Double-pin radial flow valve
CA2318323C (en) * 1998-11-17 2005-07-05 Camco International, Inc. Method and apparatus for selective injection or flow control with through-tubing operation capacity
US6892816B2 (en) * 1998-11-17 2005-05-17 Schlumberger Technology Corporation Method and apparatus for selective injection or flow control with through-tubing operation capacity
EP1359289A1 (en) * 2002-03-01 2003-11-05 Shell Internationale Researchmaatschappij B.V. Downhole safety valve
US7267990B2 (en) * 2002-11-15 2007-09-11 Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College Chelation of charged and uncharged molecules with porphyrin-based compounds
US7246668B2 (en) * 2004-10-01 2007-07-24 Weatherford/Lamb, Inc. Pressure actuated tubing safety valve
AU2005319126B2 (en) 2004-12-22 2010-04-22 Bj Services Company, U.S.A. Method and apparatus for fluid bypass of a well tool
WO2006069372A2 (en) 2004-12-22 2006-06-29 Bj Services Company Method and apparatus to hydraulically bypass a well tool
GB0515071D0 (en) * 2005-07-22 2005-08-31 Moyes Peter B Non-return valve
US8002040B2 (en) * 2008-04-23 2011-08-23 Schlumberger Technology Corporation System and method for controlling flow in a wellbore
CN101798913B (en) * 2010-03-10 2012-11-14 中国石油天然气股份有限公司 Differential pressure underground throttle device
CN103541698B (en) * 2012-07-12 2016-01-20 中国石油天然气股份有限公司 Gas well down-hole fixed output quota amount throttling process units
CN106677747A (en) * 2017-01-19 2017-05-17 长江大学 Filling type water control screen pipe used for sand prevention of horizontal well completion
CN109057749B (en) * 2018-07-30 2021-04-30 中国石油天然气股份有限公司 Slip type underground throttle easy to salvage
US10920529B2 (en) 2018-12-13 2021-02-16 Tejas Research & Engineering, Llc Surface controlled wireline retrievable safety valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045759A (en) * 1955-01-26 1962-07-24 Udell Inc Well apparatus
US3050132A (en) * 1957-07-01 1962-08-21 Page Oil Tools Inc Fluid pressure operated shut-off valve for wells
US3065794A (en) * 1957-08-19 1962-11-27 Page Oil Tools Inc Retrievable well flow control valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163794A (en) * 1984-08-29 1986-03-05 Camco Inc Fluid level controlled safety valve

Also Published As

Publication number Publication date
CA994669A (en) 1976-08-10
FR2212483A1 (en) 1974-07-26
US3814181A (en) 1974-06-04
FR2212483B1 (en) 1979-03-16
DE2364328A1 (en) 1974-07-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee