Double seals packers for subterranean wells

Details Double seals packers for subterranean wells Double seals packers for subterranean wells

1992-04-03

1993-07-13

Novosad, Stephen J.

Wells

Packers or plugs

Central support has shoulders expanding sealing portion, or...

166217, 166202, 166387, 277236, 2771166, 277118, E21B 33128, F16J 1508, F16J 1512

Patent

active

052264920

ABSTRACT:
A well installation is disclosed which has a production casing set in a subterranean well; a production tubing disposed within the production casing; an annular space defined between the production casing and the production tubing; and a packer for sealing the annular space, the packer having: a hollow metallic sleeve disposed on the production tubing, the hollow metallic sleeve having an inner cavity, the inner cavity being open at one end; an expandable member, contained within the inner cavity of the hollow metallic sleeve and extending from the open end of the inner cavity; and a wedge member disposed on the production tubing and contacting the expandable member, whereby compression of the packer causes radial expansion of the expandable member and of the hollow metallic sleeve, and whereby a first seal is formed between the production casing and the expandable member and a second seal is formed between the production casing and the cone-shaped hollow sleeve.

REFERENCES:
patent: 4258926 (1981-03-01), Upton
patent: 4329916 (1982-05-01), Roeder
patent: 4548265 (1985-10-01), Luke
patent: 4730835 (1988-03-01), Wilcox et al.
patent: 4753444 (1988-06-01), Jackson et al.
patent: 4993489 (1991-02-01), McLeod
patent: 5010958 (1991-04-01), Meek et al.

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