CA955521A - Low flow safety valve - Google Patents

Low flow safety valve

Info

Publication number
CA955521A
CA955521A CA140,672A CA140672A CA955521A CA 955521 A CA955521 A CA 955521A CA 140672 A CA140672 A CA 140672A CA 955521 A CA955521 A CA 955521A
Authority
CA
Canada
Prior art keywords
safety valve
low flow
flow safety
low
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
Application number
CA140,672A
Other versions
CA140672S (en
Inventor
James W. Kisling
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 CA955521A publication Critical patent/CA955521A/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
    • 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
    • E21B2200/04—Ball valves
    • 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
    • Y10T137/7732—With mechanical stop against reopening

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)
CA140,672A 1971-04-28 1972-04-26 Low flow safety valve Expired CA955521A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13813871A 1971-04-28 1971-04-28

Publications (1)

Publication Number Publication Date
CA955521A true CA955521A (en) 1974-10-01

Family

ID=22480592

Family Applications (1)

Application Number Title Priority Date Filing Date
CA140,672A Expired CA955521A (en) 1971-04-28 1972-04-26 Low flow safety valve

Country Status (2)

Country Link
US (1) US3724493A (en)
CA (1) CA955521A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848629A (en) * 1972-10-31 1974-11-19 Schlumberger Technology Corp Low flow safety valve with pressure lock
US8002040B2 (en) * 2008-04-23 2011-08-23 Schlumberger Technology Corporation System and method for controlling flow in a wellbore

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126908A (en) * 1964-03-31 figure
US1218089A (en) * 1915-06-07 1917-03-06 Grover C Kail Automatic gas-shut-off valve.
US1627312A (en) * 1925-12-19 1927-05-03 Blust Christian Automatic safety cut-off for gas valves

Also Published As

Publication number Publication date
US3724493A (en) 1973-04-03

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