Variable orifice gas lift valve for high flow rates with detacha

Details Variable orifice gas lift valve for high flow rates with detacha Variable orifice gas lift valve for high flow rates with detacha

1997-08-15

2000-06-06

Michalsky, Gerald A.

Fluid handling

Diverse fluid containing pressure systems

Gas lift valves for wells

1661175, E21B 3406

Patent

active

060706082

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.

REFERENCES:
patent: 3280914 (1966-10-01), Sizer et al.
patent: 4239082 (1980-12-01), Terral
patent: 4705062 (1987-11-01), Baker
patent: 5172717 (1992-12-01), Boyle et al.
patent: 5176164 (1993-01-01), Boyle
patent: 5469878 (1995-11-01), Pringle
patent: 5535767 (1996-07-01), Schnatzmeyer et al.
patent: 5782261 (1998-07-01), Becker et al.

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