Valve retrieval mechanism for an inflatable packer system

Details Valve retrieval mechanism for an inflatable packer system Valve retrieval mechanism for an inflatable packer system

E - Fixed Constructions

21

B

166/65

E21B 33/127 (2006.01) E21B 33/124 (2006.01) E21B 34/12 (2006.01)

Patent

CA 1134743

VALVE RETRIEVAL MECHANISM FOR AN INFLATABLE PACKER SYSTEM ABSTRACT A shifting sleeve retrieval mechanism for use in a valve having a stretched and collapsed configuration and an outer valve member adapted to be fixed against longi- tudinal movement and an inner valve member adapted to move longitudinally with the outer valve member. A shifting sleeve surrounds a length of the inner valve member and moves longitudinally with respect to both inner and outer valve members. The inner valve member has a shoulder thereon which rides under the shifting sleeve when the valve is collapsed and engages the shifting sleeve when the valve is elongated, thereby moveing the shifting sleeve to its original position.

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