IT974455B - SURFACE SUB SAFETY VALVE - Google Patents

SURFACE SUB SAFETY VALVE

Info

Publication number
IT974455B
IT974455B IT55208/72A IT5520872A IT974455B IT 974455 B IT974455 B IT 974455B IT 55208/72 A IT55208/72 A IT 55208/72A IT 5520872 A IT5520872 A IT 5520872A IT 974455 B IT974455 B IT 974455B
Authority
IT
Italy
Prior art keywords
safety valve
surface sub
sub safety
valve
sub
Prior art date
Application number
IT55208/72A
Other languages
Italian (it)
Original Assignee
Baker Oil Tools 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
Application filed by Baker Oil Tools Inc filed Critical Baker Oil Tools Inc
Application granted granted Critical
Publication of IT974455B publication Critical patent/IT974455B/en

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
    • E21B34/101—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with means for equalizing fluid pressure above and below the valve
    • 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

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)
  • Taps Or Cocks (AREA)
  • Safety Valves (AREA)
  • Fluid-Driven Valves (AREA)
IT55208/72A 1972-03-20 1972-12-29 SURFACE SUB SAFETY VALVE IT974455B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23625672A 1972-03-20 1972-03-20

Publications (1)

Publication Number Publication Date
IT974455B true IT974455B (en) 1974-06-20

Family

ID=22888757

Family Applications (1)

Application Number Title Priority Date Filing Date
IT55208/72A IT974455B (en) 1972-03-20 1972-12-29 SURFACE SUB SAFETY VALVE

Country Status (6)

Country Link
US (1) US3796257A (en)
JP (1) JPS5439321B2 (en)
CA (1) CA965698A (en)
FR (1) FR2176681B1 (en)
GB (1) GB1385444A (en)
IT (1) IT974455B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3830297A (en) * 1973-01-08 1974-08-20 Baker Oil Tools Inc Sub-surface safety valve with improved balancing valve means
US3971438A (en) * 1975-03-03 1976-07-27 Baker Oil Tools, Inc. Wireline safety valve with split ball
US4294315A (en) * 1978-11-13 1981-10-13 Otis Engineering Corporation Landing nipple
US4651829A (en) * 1985-12-13 1987-03-24 Halliburton Company Subsurface control valve
US4807700A (en) * 1987-09-18 1989-02-28 Cameron Iron Works Usa, Inc. Wireline downhole annulus valve
GB2267920B (en) * 1992-06-17 1995-12-06 Petroleum Eng Services Improvements in or relating to well-head structures
GB9511386D0 (en) * 1995-06-06 1995-08-02 Petroleum Eng Services Improvements relating to ball valves
GB2375122B (en) * 2001-03-14 2003-09-24 Schlumberger Holdings Activation of valves in tool strings
US6666271B2 (en) 2001-11-01 2003-12-23 Weatherford/Lamb, Inc. Curved flapper and seat for a subsurface saftey valve
US10344562B2 (en) * 2016-04-05 2019-07-09 Weatherford Technology Holdings, Llc Riser annular isolation device
WO2018227003A1 (en) * 2017-06-08 2018-12-13 Superior Energy Services, Llc Deep set safety valve
GB2571296A (en) * 2018-02-22 2019-08-28 Aker Solutions Ltd Directional control valve
CN108999589B (en) * 2018-07-26 2021-11-23 中国石油大学(华东) Downhole blowout preventer for workover operation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007669A (en) * 1956-09-13 1961-11-07 Otis Eng Co Valve
US3094170A (en) * 1960-05-31 1963-06-18 Continental Oil Co Subsurface well tubing safety valve
US3313350A (en) * 1964-05-14 1967-04-11 Jr John S Page Tubing and annulus flow control apparatus
US3310114A (en) * 1964-07-01 1967-03-21 Otis Eng Co Pressure operated safety valve
US3494421A (en) * 1965-11-29 1970-02-10 Otis Eng Corp Method of installing a wellhead system
US3675720A (en) * 1970-07-08 1972-07-11 Otis Eng Corp Well flow control system and method
US3633669A (en) * 1970-08-24 1972-01-11 Exxon Production Research Co Apparatus for running in and operation of valves and the like

Also Published As

Publication number Publication date
FR2176681A1 (en) 1973-11-02
JPS4947934A (en) 1974-05-09
GB1385444A (en) 1975-02-26
CA965698A (en) 1975-04-08
US3796257A (en) 1974-03-12
JPS5439321B2 (en) 1979-11-27
DE2313357A1 (en) 1973-10-04
DE2313357B2 (en) 1976-10-14
FR2176681B1 (en) 1981-04-10

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