Control system with failsafe feature in the event of tubing...

Details Control system with failsafe feature in the event of tubing... Control system with failsafe feature in the event of tubing...

2005-03-15

2005-03-15

Neuder, William (Department: 3672)

Wells

Processes

Operating valve, closure, or changeable restrictor in a well

C166S320000, C166S332400

Reexamination Certificate

active

06866101

ABSTRACT:
An improved control system, particularly useful for SSVs, is disclosed. It is responsive to a rupture of the tubing and control line to equalize pressure on an operating piston to allow the SSV to go to its failsafe position. The annulus pressure-sensing feature can be employed with a variety of control systems, a particular one is used as an example.

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patent: 2378970 (2003-02-01), None

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