Method and apparatus for isolating a plurality of vertically spa

Details Method and apparatus for isolating a plurality of vertically spa Method and apparatus for isolating a plurality of vertically spa

1986-10-23

1988-04-05

Leppink, James A.

Wells

Processes

Parallel string or multiple completion well

166115, 166191, 166196, 166387, E21B 33124

Patent

active

047352663

ABSTRACT:
A plurality of packing elements are mounted in vertically spaced relationship on a tubing string with the spacing of the elements corresponding generally to the spacing of a plurality of sets of perforations in a well conduit. The lowermost packing unit is provided with radially expanding locking elements which engage a locking groove provided in the well conduit. All packing units incorporate expandable elastomeric sealing members and are set by the application of tension to the tubing string and are unset by the subsequent application of a higher degree of tension to the tubing string.

REFERENCES:
patent: 2107655 (1938-02-01), Vogt et al.
patent: 2621743 (1952-12-01), Johnston
patent: 2675876 (1954-04-01), Conrad et al.
patent: 2715441 (1955-08-01), Bouvier
patent: 2760580 (1956-08-01), Johnston
patent: 3012611 (1961-12-01), Haines
patent: 3097698 (1963-07-01), Corley, Jr. et al.

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