CA991077A - Low flow safety valve with pressure lock - Google Patents

Low flow safety valve with pressure lock

Info

Publication number
CA991077A
CA991077A CA184,292A CA184292A CA991077A CA 991077 A CA991077 A CA 991077A CA 184292 A CA184292 A CA 184292A CA 991077 A CA991077 A CA 991077A
Authority
CA
Canada
Prior art keywords
safety valve
low flow
pressure lock
flow safety
lock
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
CA184,292A
Inventor
David E. Young
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
Application granted granted Critical
Publication of CA991077A publication Critical patent/CA991077A/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
    • Y10T137/7723—Safety cut-off requiring reset
    • Y10T137/7726—Responsive to change in rate of flow
    • 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
    • Y10T137/7723—Safety cut-off requiring reset
    • Y10T137/7731—Fluid counter-biased or unseated valve
    • 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
    • Y10T137/7723—Safety cut-off requiring reset
    • Y10T137/7731—Fluid counter-biased or unseated valve
    • Y10T137/7733—With fluid pressure seating of valve

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)
CA184,292A 1972-10-31 1973-10-26 Low flow safety valve with pressure lock Expired CA991077A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00302545A US3848629A (en) 1972-10-31 1972-10-31 Low flow safety valve with pressure lock

Publications (1)

Publication Number Publication Date
CA991077A true CA991077A (en) 1976-06-15

Family

ID=23168208

Family Applications (1)

Application Number Title Priority Date Filing Date
CA184,292A Expired CA991077A (en) 1972-10-31 1973-10-26 Low flow safety valve with pressure lock

Country Status (5)

Country Link
US (1) US3848629A (en)
CA (1) CA991077A (en)
DE (1) DE2354275A1 (en)
FR (1) FR2204768B1 (en)
GB (1) GB1447993A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4204513A (en) * 1978-11-15 1980-05-27 California Controls Company Hydraulic safety mechanism
US4266614A (en) * 1979-07-12 1981-05-12 Otis Engineering Corporation Valve
US4721162A (en) * 1984-08-29 1988-01-26 Camco, Incorporated Fluid level controlled safety valve
US8002040B2 (en) * 2008-04-23 2011-08-23 Schlumberger Technology Corporation System and method for controlling flow in a wellbore
US7740075B2 (en) 2008-07-09 2010-06-22 Schlumberger Technology Corporation Pressure relief actuated valves
US8733474B2 (en) * 2011-01-14 2014-05-27 Schlumberger Technology Corporation Flow control diverter valve
CN103061707B (en) * 2011-10-21 2015-07-22 中国石油天然气股份有限公司 Underground circulating switch valve
NO339640B1 (en) 2013-10-30 2017-01-16 Wellbore As Downhole device designed to form a pipe string
CN109734041B (en) * 2019-01-11 2024-06-11 苏州三米格科技有限公司 Oil gun and oil filling equipment
CN112013140B (en) * 2020-08-28 2022-04-29 大庆烯城炟石油技术开发有限公司 Be applied to relief valve on air compressor machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452777A (en) * 1964-08-24 1969-07-01 William W Dollison Pressure-responsive safety valve
US3477507A (en) * 1967-06-13 1969-11-11 Cook Testing Co Well safety valve
US3642070A (en) * 1970-05-06 1972-02-15 Otis Eng Co Safety valve system for gas light wells
US3724493A (en) * 1971-04-28 1973-04-03 Schlumberger Technology Corp Low flow safety valve

Also Published As

Publication number Publication date
DE2354275A1 (en) 1974-05-09
FR2204768B1 (en) 1977-03-11
US3848629A (en) 1974-11-19
GB1447993A (en) 1976-09-02
FR2204768A1 (en) 1974-05-24

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