Tubing annulus valve

Details Tubing annulus valve Tubing annulus valve

2007-05-22

2007-05-22

Beach, Thomas A (Department: 3671)

Wells

Submerged well

Wellhead

C166S348000

Reexamination Certificate

active

11032545

ABSTRACT:
A subsea wellhead assembly has a tubing hanger with a tubing annulus passage and a production passage. A metal-sealing shuttle valve is mounted in the tubing hanger for blocking upward flow through the tubing annulus passage. The shuttle valve has a retention mechanism that prevents the shuttle from moving to the open position when fluid pressure is applied from above. The running tool releases the retention mechanism after testing has been completed, causing the shuttle to close. The tree has an engaging member that can be stroked downward into the tubing hanger annulus passage to move the shuttle valve to the open position for communicating with the annulus.

REFERENCES:
patent: 3360048 (1967-12-01), Watkins
patent: 4333526 (1982-06-01), Watkins
patent: 4541753 (1985-09-01), Langner
patent: 5044432 (1991-09-01), Cunningham et al.
patent: 5143158 (1992-09-01), Watkins et al.
patent: 5687794 (1997-11-01), Watkins et al.
patent: 5769162 (1998-06-01), Bartlett et al.
patent: 6378613 (2002-04-01), Kent et al.
patent: 6494257 (2002-12-01), Bartlett et al.
patent: 6655455 (2003-12-01), Bartlett et al.
patent: 6681850 (2004-01-01), Bartlett et al.
patent: 6840323 (2005-01-01), Fenton et al.
patent: 7069988 (2006-07-01), Bartlett et al.
patent: 2002/0029887 (2002-03-01), Baskett et al.
patent: 2003/0094284 (2003-05-01), Fenton et al.
patent: 2003/0146000 (2003-08-01), Dezen et al.
patent: 0349685 (1990-01-01), None
patent: 2108551 (1983-05-01), None
patent: 2311544 (1997-01-01), None

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