Well packers using metal to metal seals

Details Well packers using metal to metal seals Well packers using metal to metal seals

1977-03-11

1978-11-28

Purser, Ernest R.

Wells

Packers or plugs

With expanding anchor

166131, 166191, 166203, 277236, E21B 33128

Patent

active

041271688

ABSTRACT:
An improved well packer for use in sour gas wells is disclosed. The improved packer includes a cylindrical mandrel encircled with a resilient metal seal ring, means for anchoring the packer at a predetermined vertical depth, means for radially expanding the seal rings so as to cause sealing engagement with the casing and mandrel, and ratchet means for maintaining the seal rings in expanded form. The packer is adapted to be run into the cased wellbore on tubing and is particularly useful in sour gas wells.

REFERENCES:
patent: 1423197 (1922-07-01), Critchlow
patent: 2253776 (1941-08-01), Gaunt
patent: 2791278 (1957-05-01), Clark, Jr.
patent: 2948338 (1960-08-01), Raulins et al.
patent: 3307736 (1967-02-01), Kisling
patent: 3942808 (1976-03-01), Gross
patent: 3990510 (1976-11-01), Decuir

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