Actuator module for wireline cutting safety valve

Details Actuator module for wireline cutting safety valve Actuator module for wireline cutting safety valve

E - Fixed Constructions

21

B

166/50

E21B 23/06 (2006.01) E21B 29/04 (2006.01) E21B 29/08 (2006.01) E21B 34/02 (2006.01)

Patent

CA 1094448

660-2032G ACTUATOR MODULE FOR WIRELINE CUTTING SAFETY VALVE Abstract of the Disclosure A portable add-on actuator module for use with a wire- line cutting surface safety valve to provide supplemental energy for closing and simultaneously cutting a wireline extending through the surface safety valve in the event of an emergency. The unit includes a spring loaded locking collet assembly arranged to engage a locking recess within the stem of a surface safety valve so that the spring force may be added to normal valve closing forces such as line pressure and valve stem springs to supplement such forces for insuring the cutting by the surface valve member of a wireline extending through the member. The actuator module has a body which rests on the safety valve body without the use of any connecting structure. The module also includes structure for hydraulically compressing the spring for connec- ting the module on a safety valve and for hydraulically shif- ting the latching collet assembly to a disengaging condition for releasing the module from a safety valve.

310704

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