Deep-set annulus vent valve

Details Deep-set annulus vent valve Deep-set annulus vent valve

1997-11-25

1999-09-07

Bagnell, David J.

Wells

Valves, closures or changeable restrictors

Fluid operated

166321, E21B 3300

Patent

active

059472065

ABSTRACT:
An annulus vent valve is provided to vent gas or other production fluids from below a packer set within a well in deep-set applications. The valve may broadly include: a body member having a first end, a second end, an outer surface, a longitudinal bore adjacent the second end, and at least one flow port extending from the longitudinal bore to the outer surface; a closure member mounted within the longitudinal bore to control fluid flow therethrough; a mechanism for biasing the closure member to a normally closed position to prevent fluid flow through the longitudinal bore; a closure member actuator disposed for movement within the longitudinal bore to open and close the closure member; a mechanism for biasing the closure member actuator away from the closure member; a piston connected to the closure member actuator and having a first end and a second end; and a gas chamber disposed within the body member and in communication with the second end of the piston.

REFERENCES:
patent: 3897822 (1975-08-01), Mott
patent: 4111608 (1978-09-01), Elliott, et al.
patent: 4252197 (1981-02-01), Pringle
patent: 4589482 (1986-05-01), Bayh, III
patent: 4621695 (1986-11-01), Pringle
patent: 4660646 (1987-04-01), Blizzard
patent: 4676307 (1987-06-01), Pringle
patent: 4791991 (1988-12-01), Morris et al.
patent: 4976317 (1990-12-01), Leismer
patent: 5310004 (1994-05-01), Leismer
Camco Products and Services Co., CAMCO Operating Manual PGV Gas Vent Valve Pt. No. 22343-000-00000, Feb. 1991.

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