Tension set packing apparatus for subterranean wells

Details Tension set packing apparatus for subterranean wells Tension set packing apparatus for subterranean wells

1987-11-02

1988-12-06

Dang, Hoang C.

Wells

Packers or plugs

With expanding anchor

166115, 166123, 166182, 166196, E21B 2306

Patent

active

047890290

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 wall 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: 2566323 (1951-09-01), Forsyte et al.
patent: 2604946 (1952-07-01), Sweet
patent: 2665763 (1954-01-01), Baker
patent: 2940524 (1960-06-01), Miller, Jr.
patent: 3311171 (1967-03-01), Castro
patent: 3946807 (1976-03-01), Amamcharla et al.
patent: 4176715 (1979-12-01), Bigelow et al.
patent: 4410040 (1983-10-01), Longacre et al.
patent: 4665977 (1987-05-01), Mullins
patent: 4671354 (1987-06-01), Henderson et al.

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