Well safty valve system

Details Well safty valve system Well safty valve system

E - Fixed Constructions

21

B

166/44

E21B 34/10 (2006.01) E21B 34/00 (2006.01)

Patent

CA 1130722

WELL SAFETY VALVE SYSTEM Abstract of the Disclosure A well safety system comprising a tubing retrievable safety valve adaptable for being connected in a well tubing string with means therein, responsive to pressure, for opening and closing the valve. The tubing retrievable safety valve is to be connected, in the tubing string, below a landing nipple for receiving a secondary safety valve. The safety valve and landing nipple are connected by a common conduit for conducting a suitable pressure fluid for control and balance of the safety valve and a secondary valve landed in the landing nipple. Means are provided on the landing nipple for selectively flush- ing pressure fluid into the tubing bore. This abstract of the disclosure is neither intended to define the scope of the invention which, of course, is measured by the claims nor is it intended to limit the invention in any way.

339534

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