Hydraulic versa-trieve packer

Details Hydraulic versa-trieve packer Hydraulic versa-trieve packer

E - Fixed Constructions

21

B

166/67

E21B 33/128 (2006.01) E21B 33/1295 (2006.01)

Patent

CA 1305660

HYDRAULIC VERSA-TRIEVE PACKER ABSTRACT A hydraulic well packer for releasable setting within a well casing includes a hydraulic actuator assembly mounted between annular seal elements and anchor slips, with the seal element , hydraulic actuator assembly and anchor slips being mounted for sliding movement along a packer mandrel. A setting piston and setting cylinder are locked together during run-in by a shear screw and by interlocking engagement of a transfer lug. The transfer lug is shifted to provide a direct interlocking engagement between the set- ting piston and a setting wedge assembly after hydraulic pressurization has been initiated to a level sufficient to cause separation of the shear screw. According to this arrangement, the shear screw lock is substantially isolated with respect to the weight of the. well packer and any pro- duction equipment connected to the packer during run-in operations.

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