Downhole safety valve apparatus and method

Details Downhole safety valve apparatus and method Downhole safety valve apparatus and method

2005-10-07

2010-11-02

Dang, Hoang (Department: 3672)

Wells

Processes

Operating valve, closure, or changeable restrictor in a well

C166S065100, C166S322000, C166S386000

Reexamination Certificate

active

07823648

ABSTRACT:
The application discloses a valve, which may include either a safety valve or a storm surge choke valve or the like, to isolate a zone below a valve from a string of production tubing. Preferably, the valve includes a flow interruption surface assembly, such as a flapper valve or a ball valve, displaced by an operating conduit extending from a surface location to the valve through the inside of the production tubing. The application also discloses a bypass-conduit inside the production tubing to allow communication from a surface location to the production zone when the valve is in either an open or a closed location.

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