Formation isolation valve

Details Formation isolation valve Formation isolation valve

E - Fixed Constructions

21

B

E21B 34/06 (2006.01) E21B 34/10 (2006.01)

Patent

CA 2418759

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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