Well packer

Details Well packer Well packer

1975-09-10

1977-04-19

Leppink, James A.

Wells

Packers or plugs

With expanding anchor

166138, 166182, E21B 3312

Patent

active

040182746

ABSTRACT:
Disclosed is a retrievable, weight set well packer which is set and released by longitudinal movement of the tubing string. Locking means are provided for keeping the packer set when the tubing is raised slightly to open a bypass between the tubing and set packer. Continued raising of the tubing releases the lock means to permit the packer to be retrieved. Dual opposed spreader cones keep the packer set against pressure induced forces in either direction. Differential sealing areas are also employed to prevent such forces from opening the bypass.

REFERENCES:
patent: 3279542 (1966-10-01), Brown
patent: 3357489 (1967-12-01), Brown
patent: 3420306 (1969-01-01), Brown
patent: 3467184 (1969-09-01), Young

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