Formation isolation valve and method of use

Details Formation isolation valve and method of use Formation isolation valve and method of use

2008-02-19

2009-11-17

Wright, Giovanna C (Department: 3672)

Wells

Processes

Operating valve, closure, or changeable restrictor in a well

C166S322000, C166S332300, C166S332500, C166S334200

Reexamination Certificate

active

07617876

ABSTRACT:
The present invention provides for high volume flow from a well. A retrievable formation isolation valve allows high volume flow through the remaining casing or tubing. Alternatively, a large bore valve configuration that is not retrieved, but remains as part of the casing, can be used. The present invention also includes methods to allow for high volume flow using retrievable isolation valves or large bore valves.

REFERENCES:
patent: 5810087 (1998-09-01), Patel
patent: 6041864 (2000-03-01), Patel et al.
patent: 6328112 (2001-12-01), Malone
patent: 6330913 (2001-12-01), Langseth et al.
patent: 2001/0035288 (2001-11-01), Brockman et al.

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