Inflatable packer with bladder shape control

Details Inflatable packer with bladder shape control Inflatable packer with bladder shape control

1994-12-22

1996-04-16

Tsay, Frank S.

Wells

Packers or plugs

Expanded by confined fluid from central chamber, pump or...

166195, 277 34, E21B 33127

Patent

active

055073417

ABSTRACT:
An inflatable packer assembly used in well service work and having a mandrel that carries a normally retracted inflatable packer unit. The unit includes an inner elastomer bladder surrounded by a reinforcement. To control the shape of the unit during inflation and thereby prevent the formation of Z-folds in the bladder, its axial stiffness is preferentially increased relative to its circumferential or hoop stiffness by devices such as carbon fibers or fiberglass tape.

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patent: 5353871 (1994-10-01), Eslinger et al.
patent: 5417289 (1995-05-01), Carisella

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