Variable orifice gas lift valve for high flow rates with detachable power source and method of using
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United States of America Patent
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Oct 23, 2001
Grant Date -
Aug 30, 2001
app pub date -
Apr 7, 2000
filing date -
Aug 15, 1996
priority date (Note) -
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Abstract
The present invention is a surface controlled gas lift valve designed for high flow rates and used in a subterranean well, comprising: a valve for sealable insertion in a mandrel, having a variable orifice which alternately permits, prohibits, or throttles fluid flow into the valve, and a detachable and/or remote actuator are disclosed. Methods of actuating the valve include electro-hydraulic, hydraulic, and pneumo-hydraulic, while sensors relay the position of the variable orifice and critical fluid pressures to a panel on the surface. The orifice valve and the actuator while operatively connected, may be separately installed in or retrieved from by either wireline or coiled tubing intervention methods.
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