Packer and service tool assembly

Details Packer and service tool assembly Packer and service tool assembly

E - Fixed Constructions

21

B

166/63

E21B 23/06 (2006.01) E21B 33/129 (2006.01) E21B 43/04 (2006.01)

Patent

CA 1263840

ABSTRACT OF THE DISCLOSURE A packer amd service tool assembly for oil or gas well preparation includes a disengageable coupling mechanism which permits the tool to be screwed into and out of the packer and which can be hydraulically disengaged so that the tool can be removed without applying torque to the tool or workstring. A releaseable ratchet mechanism is also provided in the packer for trapping the setting loads when the packer is set in the casing. The ratchet mechanism is releasable by pulling up a housing portion which cammingly engages collapsible ratchet fingers thereby disengaging the ratchet finger trapping teeth from a stationary ratchet ring.

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