Formation isolation valve

Details Formation isolation valve Formation isolation valve

2003-02-11

2008-03-25

Wright, Giovanna C (Department: 3672)

Wells

Processes

Operating valve, closure, or changeable restrictor in a well

C166S297000, C166S322000

Reexamination Certificate

active

07347272

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.

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