Annular flow safety valve and methods
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United States of America Patent
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Aug 20, 2002
Grant Date -
N/A
app pub date -
Oct 17, 2000
filing date -
Oct 17, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present inventions contemplate improved annular flow safety valve apparatus and methods in which the valve comprises a bi-directional self-contained electromechanically operated valve assembly including a moveable seal, power source, electric motor, and control system, capable of operating with or without power or control inputs from the surface.
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