초록 ▼

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

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.

대표청구항 ▼

[ I claim:] [1.] A gas lift valve for use in a subterranean well, comprising:a valve body with a longitudinal bore therethrough for sealable insertion in a mandrel;a variable orifice valve in the body for controlling fluid flow into the body; and,an actuating piston connected to the variable orifice

[ I claim:] [1.] A gas lift valve for use in a subterranean well, comprising:a valve body with a longitudinal bore therethrough for sealable insertion in a mandrel;a variable orifice valve in the body for controlling fluid flow into the body; and,an actuating piston connected to the variable orifice valve and located in a housing external to the valve body.