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특허 상세정보

Surface controlled subsurface safety valve

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16K-011/20    E21B-043/12   
미국특허분류(USC) 251/636 ; 166/324
출원번호 US-0787103 (1977-04-13)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 22  인용 특허 : 1

Disclosed is a surface controlled subsurface safety valve wherein the greater of well pressure and balance pressure assists in closing the safety valve. Well pressure assist for valve closure is obtained without creating additional depth sensitive limitations as the balance pressure approaches zero. Balance pressure assist for valve closure is obtained without well pressure tending to maintain the valve open. This abstract is neither intended to define the scope of the invention, which, of course, is measured by the claims, nor is it intending to be limi...


A surface controlled subsurface safety valve comprising: a housing having a bore extending therethrough; closure means disposed in said bore and adapted for movement between position opening and closing said bore; operator means for moving said closure means and axially movable within said bore between a first and second position; means for resiliently urging said operator means to its first position wherein said closure means closes said bore; control pressure responsive means for moving said operator means to its second position, said control pressure ...

이 특허를 인용한 특허 피인용횟수: 22

  1. Bowyer Michael L. (Aberdeen GB6). Annulus safety apparatus. USP1984014423782.
  2. Madison, Kent R.. Aquifer recharge valve and method. USP2004116811353.
  3. Madison,Kent R.. Aquifer recharge valve and method. USP2007017156578.
  4. Madison, Kent R.. Aquifier flow controlling valve assembly and method. USP2013098522887.
  5. Pringle Ronald E. (Houston TX). Balance line hydraulically operated well safety valve. USP1986114621695.
  6. Dickson Rennie L. ; Le Nam Van. Balanced line tubing retrievable safety valve. USP1999126003605.
  7. Zimmerman Patrick J.. Control line actuation of multiple downhole components. USP2000086109357.
  8. Thompson Grant R.. Control system with collection chamber. USP1999055906220.
  9. Smith Harrison C.. Electromagnetic resistivity tool and method for use of same. USP2000096114972.
  10. Speegle Steven C. (Flower Mound TX) Vinzant Michael B. (Carrollton TX) Sullivan Vinson D. (Houma LA). Equalizing means for well tools. USP1984064452311.
  11. White Brian R. ; Notareschi Vince E. ; Hines Grant W. ; Simpson Brian D. ; Baer Timothy M. ; Jaeger Matthew W. ; Clarkson Daniel E. ; Horak James Michael. Fuel supply system for an internal combustion engine. USP1998115832903.
  12. Smith, David Randolph; Harkins, Gary O.; Shanley, Brent. Method and apparatus to complete a well having tubing inserted through a valve. USP2009117617878.
  13. Holliday,David. Rotary valve assembly. USP2007037195225.
  14. Crow Robert Wesley ; Vinzant Michael Burl ; Meaders Michael Wade ; LeBoeuf Gerald L.. Safety valve utilizing an isolation valve and method of using the same. USP2001106302210.
  15. Yonker John H. (Carrollton TX) Fisher ; Jr. Ernest P. (Carrollton TX). Single line deep depth safety valve. USP1984014428557.
  16. Deaton Thomas M. (Dallas TX) Kohn Gary A. (Dallas TX). Subsurface safety valve. USP1980074214606.
  17. Fisher ; Jr. Ernest P. (Carrollton TX). Surface controlled subsurface safety valve. USP1980034193450.
  18. Roberts, William M.. Tubing shut off valve. USP1982044325434.
  19. Noack Timothy J. (Lewisville TX) Rathie Lester C. (Dartmouth CAX). Valve. USP1985064522370.
  20. Wallace Glenn E.. Water well recharge throttle valve. USP2000066073906.
  21. Mott James D. (Houston TX). Well safety valve apparatus. USP1982014310051.
  22. Garr, Ronald J.; Plunkett, Kevin R.. Wireline run mechanically or hydraulically operated subterranean insert barrier valve and associated landing nipple. USP2013028371375.