Autonomous circulation, fill-up, and equalization valve

Details Autonomous circulation, fill-up, and equalization valve Autonomous circulation, fill-up, and equalization valve

2005-11-08

2008-12-23

Gay, Jennifer H (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S066600, C166S334400

Reexamination Certificate

active

07467665

ABSTRACT:
Systems and methods for operating a circulation valve such that the valve will automatically close without the need for a ball to be dropped or other intervention from the surface. The circulation valve is autonomous and will preferably be actuated from an open to a closed position by a motive force such as a power screw. The valve includes an actuator that causes the valve to close in response to particular conditions, such as the passing of a predetermined amount of time, or wellbore conditions, such as pressure, temperature or position.

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