Packer and service tool assembly

Details Packer and service tool assembly Packer and service tool assembly

1985-09-11

1987-04-28

Leppink, James A.

Wells

Packers or plugs

With expanding anchor

166134, 166237, E21B 2306, E21B 33128, E21B 33129

Patent

active

046606378

ABSTRACT:
A packer and 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.

REFERENCES:
patent: 2966216 (1960-12-01), Bigelow
patent: 3237695 (1966-03-01), Bostock et al.
patent: 3282340 (1966-11-01), Park
patent: 3374837 (1968-03-01), Page et al.
patent: 3552489 (1971-01-01), Berryman
patent: 3695352 (1972-10-01), McGill
patent: 4078606 (1978-03-01), Montgomery
patent: 4393929 (1983-07-01), Akkerman
patent: 4488595 (1984-12-01), Akkerman

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