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GB1351365A - Well safety valve - Google Patents

Well safety valve

Info

Publication number
GB1351365A
GB1351365A GB5045771A GB5045771A GB1351365A GB 1351365 A GB1351365 A GB 1351365A GB 5045771 A GB5045771 A GB 5045771A GB 5045771 A GB5045771 A GB 5045771A GB 1351365 A GB1351365 A GB 1351365A
Authority
GB
United Kingdom
Prior art keywords
piston
fluid
pressure
safety valve
seat
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
GB5045771A
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.)
CAMCO Inc
Original Assignee
CAMCO 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 CAMCO Inc filed Critical CAMCO Inc
Publication of GB1351365A publication Critical patent/GB1351365A/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
    • 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
    • F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
    • 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/04—Check valves with guided rigid valve members shaped as balls
    • F16K15/044—Check valves with guided rigid valve members shaped as balls spring-loaded
    • 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
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7905—Plural biasing means
    • 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
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7922—Spring biased
    • Y10T137/7923—With means to protect spring from fluid
    • 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
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7922—Spring biased
    • Y10T137/7927—Ball valves
    • Y10T137/7928—With follower

Landscapes

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

Abstract

1351365 Wells &c CAMCO INC 29 Oct 1971 [11 Jan 1971] 50457/71 Heading E1F [Also in Division F2] A safety valve for closing a well tubing on abnormal pressure decrease comprises a ball closure 28 supported on a piston 30, which is biassed upwards by fluid-pressure in a closedend cylinder 34, and which is held in the position shown by the normal pressure of the fluid flowing from openings 26 to outlet 22. Piston 30 moves the ball 28 upwards into contact with seat 24 on abnormal pressure decrease. Sleeve 58 biassed downwards by spring 60 protects the seat from abrasive particles in the fluid flow. Effective area of piston 30 may be changed by moving seal 36 from groove 50 to groove 52 surrounding a smaller diameter portion of the piston. Fluid pressure loading may be supplemented by a spring 40 in chamber 34.
GB5045771A 1971-01-11 1971-10-29 Well safety valve Expired GB1351365A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10522671A 1971-01-11 1971-01-11

Publications (1)

Publication Number Publication Date
GB1351365A true GB1351365A (en) 1974-04-24

Family

ID=22304688

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5045771A Expired GB1351365A (en) 1971-01-11 1971-10-29 Well safety valve

Country Status (2)

Country Link
US (1) US3672397A (en)
GB (1) GB1351365A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274486A (en) * 1979-11-16 1981-06-23 Otis Engineering Corporation Apparatus for and method of operating a well
US5992452A (en) * 1998-11-09 1999-11-30 Nelson, Ii; Joe A. Ball and seat valve assembly and downhole pump utilizing the valve assembly
RU2455546C1 (en) * 2010-12-30 2012-07-10 Общество с ограниченной ответственностью "Конкистадор" Check valve
RU2533394C1 (en) * 2013-08-01 2014-11-20 Общество с ограниченной ответственностью "Газпром ПХГ" Cut-off valve
RU2629287C2 (en) * 2015-06-29 2017-08-28 Владимир Георгиевич Решетников Device for drill string shut-down
RU2672898C1 (en) * 2018-02-15 2018-11-20 Общество с ограниченной ответственностью Научно-производственная фирма "Пакер" Cutoff valve
RU204606U1 (en) * 2021-02-25 2021-06-01 Пепеляева Валентина Борисовна POSITIVE SLAM-SHUT VALVE

Also Published As

Publication number Publication date
US3672397A (en) 1972-06-27

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Legal Events

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