GB1380746A - Safety valves particularly for petroleum wells - Google Patents

Safety valves particularly for petroleum wells

Info

Publication number
GB1380746A
GB1380746A GB3080772A GB3080772A GB1380746A GB 1380746 A GB1380746 A GB 1380746A GB 3080772 A GB3080772 A GB 3080772A GB 3080772 A GB3080772 A GB 3080772A GB 1380746 A GB1380746 A GB 1380746A
Authority
GB
United Kingdom
Prior art keywords
valve
rod
piston
bore
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.)
Expired
Application number
GB3080772A
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.)
Vetco Gray LLC
Original Assignee
Gray Tool Co
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 Gray Tool Co filed Critical Gray Tool Co
Publication of GB1380746A publication Critical patent/GB1380746A/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
    • E21B34/02—Valve arrangements for boreholes or wells in well heads
    • 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
    • E21B2200/03—Valves operated by gear mechanisms, e.g. rack and pinion mechanisms
    • 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
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7782—With manual or external control for line 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
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7831—With mechanical movement between actuator and 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)
  • Taps Or Cocks (AREA)
  • Lift Valve (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

1380746 Wells &c GRAY TOOL CO 30 June 1972 [30 July 1971] 30807/72 Heading E1F [Also in Division F2] In a safety-valve suitable for mounting on the tubing head of a well, and comprises a body 10 having a bore 14, a valve 18 movable to open and close the bore, a valve operating piston 146 in a cylinder 172, and a piston rod 130 in the connection between the valve and the piston, fluid leaking around the valve acts on the piston rod in a sense tending to close the valve. The valve is held against a spherical seat formed in the bore by a seat 20 acting as a retainer. One of the seats may be spring biassed towards the valve or have a resilient annular sealing. Grease from a chamber 52 lubricates the valve. The valve is turned through 90‹ by a shaft 70 having a pinion 68 engaging threads 136 on the piston rod 130. When the valve is closed a surface 138 on the rod engages a seat 170 on a nut 154 to form a metal to metal seal which is not damaged if heat destroys seals 168 in the nut. The piston is moved to open the valve by fluid supplied by a line 177, a spring 182 acting on the piston tending to move the valve to the closed position. Well fluid at excessive pressure leaking about the valve acts through the grease in the chamber 52 on the inner end of the rod to urge the rod to close the valve. A rod 180 at the free end of the rod 130 acts as an indicator of valve position and may be moved axially to move the valve manually. The safety valve shown is for a dual completion well but the invention may be applied to single and multiple completion wells. A christmas tree may be mounted on the body and a master valve may be cast integrally withthe body. In a modification (Figs. 4-6 not shown) the valve is a gate valve having an aperture aligned with the bore in the open position. In the closed position a non-return valve is concentric with the bore and permits supply of fluid to the well.
GB3080772A 1971-07-30 1972-06-30 Safety valves particularly for petroleum wells Expired GB1380746A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16778471A 1971-07-30 1971-07-30

Publications (1)

Publication Number Publication Date
GB1380746A true GB1380746A (en) 1975-01-15

Family

ID=22608816

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3080772A Expired GB1380746A (en) 1971-07-30 1972-06-30 Safety valves particularly for petroleum wells

Country Status (8)

Country Link
US (1) US3710860A (en)
JP (1) JPS4910805A (en)
AU (1) AU441901B2 (en)
CA (1) CA946738A (en)
DE (1) DE2237239C3 (en)
FR (1) FR2148096B1 (en)
GB (1) GB1380746A (en)
IT (1) IT961747B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850237A (en) * 1971-11-01 1974-11-26 Vetco Offshore Ind Inc Mudline emergency shutoff for offshore wells
US3870101A (en) * 1973-04-25 1975-03-11 Baker Oil Tools Inc Removable subsea production test valve assembly
US4307745A (en) * 1978-10-27 1981-12-29 Combustion Engineering, Inc. Backseating and stop for valve operator
GB9511386D0 (en) * 1995-06-06 1995-08-02 Petroleum Eng Services Improvements relating to ball valves
US8960310B2 (en) * 2011-06-14 2015-02-24 Cameron International Corporation Apparatus and method for connecting fluid lines
GB201620731D0 (en) * 2016-12-06 2017-01-18 Daliburgh Subsea Ltd Valve assembly
CN107461174B (en) * 2017-09-26 2023-07-21 西南石油大学 Underground safety valve

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2497032A (en) * 1944-07-31 1950-02-07 Edgar W Millard Automatic safety flow control
US2500883A (en) * 1945-06-15 1950-03-14 Gerotor May Corp Piston valve
US3318386A (en) * 1955-01-26 1967-05-09 Garrett Well fluid flow regulator
US3035808A (en) * 1956-08-30 1962-05-22 Hydril Co Pressure responsive valve
US2998070A (en) * 1958-11-17 1961-08-29 Otis Eng Co Tamper proof manifold
US3115891A (en) * 1960-11-23 1963-12-31 United Aircraft Prod Combined shut-off and flow regulating valve
US3419076A (en) * 1965-08-12 1968-12-31 Otis Eng Co Surface condition responsive subsurface safety valve system
US3509913A (en) * 1967-07-25 1970-05-05 Hydril Co Rotary plug well safety valve

Also Published As

Publication number Publication date
IT961747B (en) 1973-12-10
JPS4910805A (en) 1974-01-30
CA946738A (en) 1974-05-07
DE2237239B2 (en) 1974-07-04
US3710860A (en) 1973-01-16
FR2148096B1 (en) 1978-03-03
AU441901B2 (en) 1973-11-08
FR2148096A1 (en) 1973-03-16
DE2237239A1 (en) 1973-02-08
AU4509772A (en) 1973-11-08
DE2237239C3 (en) 1975-03-06

Similar Documents

Publication Publication Date Title
GB1457838A (en) Disaster valves
ES401991A1 (en) Balanced pressure fuel valve
US2720219A (en) Valve construction
ES332469A1 (en) A hydraulically controlled valve device. (Machine-translation by Google Translate, not legally binding)
GB1334311A (en) Gate valve
GB2109895A (en) High/low pressure piston seal
US2608376A (en) Valve construction
US3667229A (en) Device for supplying fluid under pressure
IE801638L (en) Shaft seal
US2488949A (en) Exhaust valve
US2830620A (en) Valve
US2885176A (en) Valve construction
GB1380746A (en) Safety valves particularly for petroleum wells
US3175474A (en) Closure device for hydraulic cylinder or the like
GB982641A (en) Improvements in and relating to buffers and draw-gear for railways, tramways and like vehicles
US2229931A (en) Valve
US2600898A (en) Hydraulically operated valve seat
US4669547A (en) High temperature subsurface safety valve
GB1356752A (en) Rotary valve
US3321176A (en) Closed fluid system for sealing valve closure elements
GB1332719A (en) Damped valve train in an internal combustion engine
US2566774A (en) Safety control valve
US3143143A (en) Sequentially operable valves
US2639884A (en) Fluid valve
GB1308814A (en) Valve gear assembly with valve clearance adjustment for example for internal combustion engines

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee