Compact, retrievable packer

Details Compact, retrievable packer Compact, retrievable packer

E - Fixed Constructions

21

B

E21B 33/12 (2006.01) E21B 33/122 (2006.01) E21B 33/124 (2006.01) E21B 33/1295 (2006.01)

Patent

CA 2049880

COMPACT RETRIEVABLE PACKER ABSTRACT A compact, retrievable packer (10) has a unitary mandrel body (40) which is intersected by one or more longitudinal bores (42, 44). The effective running length of the packer is reduced by an improved arrangement of packer components which serve multiple functions. The hydraulic actuator (38) includes a setting cylinder (58) which also serves as an internal slip housing, a lower element retainer, a piston extension, and a part of the release apparatus. A release sleeve (62) serves as a part of the release apparatus, as a mandrel for engaging a locking slip (84), and forms a fixed boundary of the hydraulic pressure chamber (60). The effective running length of the packer is further reduced by making the upper wedge (78) for reacting the setting forces as an integral part of the packer mandrel body (40).

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