Downhole valve having incrementally adjustable open...

Details Downhole valve having incrementally adjustable open... Downhole valve having incrementally adjustable open...

2011-01-18

2011-01-18

Thompson, Kenneth (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S321000, C166S331000, C166S375000

Reexamination Certificate

active

07870908

ABSTRACT:
A valve that is usable with a well includes an indexer and a closing mechanism. The indexer includes a profile to establish a sequence of open settings for the valve, and the indexer is adapted to respond to first control stimuli to transition the valve through the settings according to the sequence. The closing mechanism is adapted to operate independently of the sequence in response to a second control stimulus to close the valve.

REFERENCES:
patent: 3955623 (1976-05-01), Aumann
patent: 4355685 (1982-10-01), Beck
patent: 5901796 (1999-05-01), McDonald
patent: 6668935 (2003-12-01), McLoughlin et al.
patent: 6782952 (2004-08-01), Garay
patent: 6948561 (2005-09-01), Myron
patent: 7013980 (2006-03-01), Purkis
patent: 7108068 (2006-09-01), Stevens
patent: 7237472 (2007-07-01), Cove
patent: 2005/0263279 (2005-12-01), Vachon
patent: 2007/0163774 (2007-07-01), Hosatte
patent: 2007/0251697 (2007-11-01), Loretz et al.
patent: 2434166 (2007-07-01), None

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