FR2271380B1 - - Google Patents

Info

Publication number
FR2271380B1
FR2271380B1 FR7403894A FR7403894A FR2271380B1 FR 2271380 B1 FR2271380 B1 FR 2271380B1 FR 7403894 A FR7403894 A FR 7403894A FR 7403894 A FR7403894 A FR 7403894A FR 2271380 B1 FR2271380 B1 FR 2271380B1
Authority
FR
France
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
FR7403894A
Other languages
French (fr)
Other versions
FR2271380A1 (en
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.)
Societe Nationale des Petroles dAquitaine SA
Original Assignee
Societe Nationale des Petroles dAquitaine SA
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 to NO750328B priority Critical patent/NO144227B/no
Application filed by Societe Nationale des Petroles dAquitaine SA filed Critical Societe Nationale des Petroles dAquitaine SA
Priority to FR7403894A priority patent/FR2271380A1/fr
Priority to US05/526,954 priority patent/US3999574A/en
Priority to NO750328A priority patent/NO144227C/no
Priority to DE2504616A priority patent/DE2504616C2/de
Priority to GB489775A priority patent/GB1476581A/en
Priority to NL7501394A priority patent/NL176195C/xx
Priority to CA219,477A priority patent/CA1024887A/fr
Priority to IT1997875A priority patent/IT1031487B/it
Publication of FR2271380A1 publication Critical patent/FR2271380A1/fr
Application granted granted Critical
Publication of FR2271380B1 publication Critical patent/FR2271380B1/fr
Granted 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
    • 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
    • E21B2200/05—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)
  • Earth Drilling (AREA)
FR7403894A 1974-02-06 1974-02-06 Safety valve with pressure compensation - designed for heavy duty borings for e.g. deep-sea gas conveying Granted FR2271380A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
NO750328B NO144227B (no) 1974-02-06 Anordning ved hydraulisk sikkerhetsventil.
FR7403894A FR2271380A1 (en) 1974-02-06 1974-02-06 Safety valve with pressure compensation - designed for heavy duty borings for e.g. deep-sea gas conveying
US05/526,954 US3999574A (en) 1974-02-06 1974-11-25 Hydraulic safety stop-valve
NO750328A NO144227C (no) 1974-02-06 1975-02-03 Anordning ved hydraulisk sikkerhetsventil
DE2504616A DE2504616C2 (de) 1974-02-06 1975-02-04 Sicherheitsventil für fördernde Bohrlöcher
GB489775A GB1476581A (en) 1974-02-06 1975-02-05 Hydraulic safety valve for a well
NL7501394A NL176195C (nl) 1974-02-06 1975-02-05 Hydraulisch bediende veiligheidsafsluiter voor een hoge-druk onderwater gasput.
CA219,477A CA1024887A (fr) 1974-02-06 1975-02-06 Vannes de securite hydraulique
IT1997875A IT1031487B (it) 1974-02-06 1975-02-06 Valvola di sicurezza idraulica valvola di sicurezza idraulica

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7403894A FR2271380A1 (en) 1974-02-06 1974-02-06 Safety valve with pressure compensation - designed for heavy duty borings for e.g. deep-sea gas conveying

Publications (2)

Publication Number Publication Date
FR2271380A1 FR2271380A1 (en) 1975-12-12
FR2271380B1 true FR2271380B1 (online.php) 1976-10-08

Family

ID=9134539

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7403894A Granted FR2271380A1 (en) 1974-02-06 1974-02-06 Safety valve with pressure compensation - designed for heavy duty borings for e.g. deep-sea gas conveying

Country Status (1)

Country Link
FR (1) FR2271380A1 (online.php)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4454913A (en) * 1981-01-05 1984-06-19 Schlumberger Technology Corporation Safety valve system with retrievable equalizing feature

Also Published As

Publication number Publication date
FR2271380A1 (en) 1975-12-12

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Legal Events

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