FR2247609A1 - Safety closure device for oil well - blocking piston is released from magnets by force of escaping gases - Google Patents

Safety closure device for oil well - blocking piston is released from magnets by force of escaping gases

Info

Publication number
FR2247609A1
FR2247609A1 FR7336149A FR7336149A FR2247609A1 FR 2247609 A1 FR2247609 A1 FR 2247609A1 FR 7336149 A FR7336149 A FR 7336149A FR 7336149 A FR7336149 A FR 7336149A FR 2247609 A1 FR2247609 A1 FR 2247609A1
Authority
FR
France
Prior art keywords
force
piston
magnets
released
oil well
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.)
Granted
Application number
FR7336149A
Other languages
French (fr)
Other versions
FR2247609B1 (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.)
ERAP ELF ENTR RECH ACTIV PETRO
Original Assignee
ERAP ELF ENTR RECH ACTIV PETRO
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 ERAP ELF ENTR RECH ACTIV PETRO filed Critical ERAP ELF ENTR RECH ACTIV PETRO
Priority to FR7336149A priority Critical patent/FR2247609A1/en
Publication of FR2247609A1 publication Critical patent/FR2247609A1/en
Application granted granted Critical
Publication of FR2247609B1 publication Critical patent/FR2247609B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The device, on the end of a tube (2) extending down the well, has a cylindrical casing (4) with a closed base (8) a set of side entry holes (4a) immediately below the connection (23) with the tube, and a piston (10). The piston is held down against the force of the spring (20) by magnets (18) and a further magnet (19) which is adjacent a disc (16) which retains the spring, and which is carried at the end of a spindle (11), extending downwards from the piston head. The piston is released by the force of a rush of gas through the ports, resulting in a venturi effect, so that the sloping face of the piston head is forced against the sloping face of a seating (14) inside the connection with the tube.
FR7336149A 1973-10-10 1973-10-10 Safety closure device for oil well - blocking piston is released from magnets by force of escaping gases Granted FR2247609A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7336149A FR2247609A1 (en) 1973-10-10 1973-10-10 Safety closure device for oil well - blocking piston is released from magnets by force of escaping gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7336149A FR2247609A1 (en) 1973-10-10 1973-10-10 Safety closure device for oil well - blocking piston is released from magnets by force of escaping gases

Publications (2)

Publication Number Publication Date
FR2247609A1 true FR2247609A1 (en) 1975-05-09
FR2247609B1 FR2247609B1 (en) 1976-11-19

Family

ID=9126195

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7336149A Granted FR2247609A1 (en) 1973-10-10 1973-10-10 Safety closure device for oil well - blocking piston is released from magnets by force of escaping gases

Country Status (1)

Country Link
FR (1) FR2247609A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109386637A (en) * 2017-08-07 2019-02-26 上海卓思智能科技股份有限公司 A kind of venturi valve and its wind pressure adjusting method
CN112922564A (en) * 2021-02-04 2021-06-08 西安石油大学 Underground throttling device based on special degradable alloy ball conical plug adjustment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109386637A (en) * 2017-08-07 2019-02-26 上海卓思智能科技股份有限公司 A kind of venturi valve and its wind pressure adjusting method
CN109386637B (en) * 2017-08-07 2020-05-15 上海卓思智能科技股份有限公司 Venturi valve and air pressure adjusting method thereof
CN112922564A (en) * 2021-02-04 2021-06-08 西安石油大学 Underground throttling device based on special degradable alloy ball conical plug adjustment

Also Published As

Publication number Publication date
FR2247609B1 (en) 1976-11-19

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Legal Events

Date Code Title Description
ST Notification of lapse