Downhole valve and method of making

Details Downhole valve and method of making Downhole valve and method of making

2007-03-07

2009-10-20

Gay, Jennifer H (Department: 3676)

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

C166S332100, C166S316000

Reexamination Certificate

active

07604056

ABSTRACT:
Disclosed herein is a downhole valve. The downhole valve includes, a flapper seat, a flapper sealable against the flapper seat, a spring housing in axial alignment with the flapper seat and a metal-to-metal seal disposed between the flapper seat and the spring housing. The metal-to-metal seal is sealable to both the flapper seat and the spring housing when in an energized position. Additionally, the metal-to-metal seal is a separate component from both the flapper seat and the spring housing.

REFERENCES:
patent: 4531587 (1985-07-01), Fineberg
patent: 6810955 (2004-11-01), Roth et al.
patent: 6896049 (2005-05-01), Moyes
patent: 2004/0065442 (2004-04-01), Myerley et al.
Zertech Z-Seal, [online]; [retrieved on Oct. 23, 2006]; retrieved from the Internet http://www.zertech.com/zseal.htm.

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