Well packer

Details Well packer Well packer

1985-07-19

1986-12-09

Leppink, James A.

Wells

Packers or plugs

With expanding anchor

166133, 166134, 166142, E21B 3328

Patent

active

046274910

ABSTRACT:
The present invention comprises a mechanically set pack-off device adapted to be run into a wellbore on a tubing or pipe string, the pack-off device including upper and lower slip means, packing element means therebetween, drag block means, J-slot means to releasably maintain the pack-off device in an unset mode, ratchet means to releasably lock the device in a set mode, biasing means to maintain the set of the slip means and compression of the packing element means in the device's set mode, and closeable bypass means around said packing element means.

REFERENCES:
patent: 2806536 (1957-09-01), Baker et al.
patent: 3387658 (1968-06-01), Lebourg
patent: 3399729 (1968-09-01), McGill
patent: 3434538 (1969-03-01), Kilgore et al.
patent: 3570596 (1971-03-01), Young
patent: 3584684 (1971-06-01), Anderson et al.
patent: 4427063 (1984-01-01), Skinner
patent: 4440218 (1984-04-01), Farley
patent: 4474239 (1984-10-01), Colomb et al.
Abstract from Application Serial No. 756,885 by Gary D. Zunkel and Michael L. Bolin, filed 7/19/85.
Abstract from Application Serial No. 756,886 by Gary D. Zunkel filed 7/19/85.
Abstract from Application Serial No. 756,892 by Michael L. Bolin filed 7/19/85.
Abstract from Application Serial No. 757,036 by Gary D. Zunkel filed 7/19/85.
Abstract from Application Serial No. 757,040 by Gary D. Zunkel and Michael L. Bolin, filed 7/19/85.
Abstract from Application Serial No. 757,109 by Gary D. Zunkel filed 7/19/85.
Abstract from Application Serial No. 757,115 by Gary D. Zunkel filed 7/19/85.

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