Well packer

Details Well packer Well packer

1980-09-05

1982-08-24

Novosad, Stephen J.

Wells

Packers or plugs

With expanding anchor

166217, 166387, E21B 33128, E21B 33129

Patent

active

043456499

ABSTRACT:
Disclosed is a well packer for releasable setting within a well conduit, including a seal assembly for sealing the packer to the conduit and an anchor assembly for anchoring the packer to the conduit. The packer is set in stages by hydraulic pressure. The seal assembly is extended, and locked, in sealing configuration; the anchor assembly is then set, and locked, in gripping engagement with the conduit. The packer is released by longitudinal movement of a central mandrel relative to the seal and anchoring assemblies. The release of the packer also occurs in stages, with the seal assembly unlocked and released from its set configuration followed by like operations relative to the anchor assembly. A hold-down system prevents premature release of the packer by securing the mandrel against such relative longitudinal movement.

REFERENCES:
patent: 3011555 (1961-12-01), Clark, Jr.
patent: 3142338 (1964-07-01), Brown
patent: 3391740 (1968-07-01), Edwards, Jr.
patent: 3659647 (1972-05-01), Brown
patent: 3749166 (1973-07-01), Young
patent: 4258787 (1981-03-01), Amancharla
Composite Catalog of Oil Field Equipment and Services, 1970-1971, p. 819, (Brown Oil Tools, Inc. Brochure).
Composite Catalog of Oil Field Equipment and Services, 1974-1975, pp. 758-759, (Brown Oil Tools, Inc. Brochure).
Composite Catalog of Oil Field Equipment and Services, 1976-1977, p. 868, (Brown Oil Tools, Inc. Brochure).
Composite Catalog of Oil Field Equipment and Services, 1978-1979, pp. 1037 and 1038, (Brown Oil Tools Brochure).
Composite Catalog of Oil Field Equipment and Services, 1980-1981, pp. 1161 and 1162, (Brown Oil Tools, Inc. Brochure).

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