Valves and valve actuation – Fluid actuated or retarded – With mechanical movement between actuator and valve
Patent
1978-06-26
1981-03-17
Schwadron, Martin P.
Valves and valve actuation
Fluid actuated or retarded
With mechanical movement between actuator and valve
13761411, 166244C, 166310, 166321, F16K 3112, E21B 4312
Patent
active
042562821
ABSTRACT:
In accordance with an illustrative embodiment of the present invention, a valve placed in a subsea blowout preventer stack during a production test of a well producing gas comprises a valve body containing two valve elements in series and a releasable control unit. A fluid to inhibit the formation of natural-gas hydrates can be injected into the valve body by means of a pump on the surface and through a high-pressure hose. A lateral connector fixed to the control unit is fitted in a sealed manner into a receptacle on the valve body to allow reconnection of the inhibiting fluid injection system.
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Franc Jean
Goldschild Pierre H.
Chambers A. Michael
Moseley David L.
Schlumberger Technology Corporation
Schwadron Martin P.
Sherman William R.
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