Slip deployment mechanism

Details Slip deployment mechanism Slip deployment mechanism

1980-09-15

1982-07-20

Novosad, Stephen J.

Wells

Expansible anchor or casing

Spring set

166216, 166217, E21B 2300

Patent

active

043401163

ABSTRACT:
A slip deployment mechanism for use in conjunction with a packer in a tubing string includes a cylindrical retainer telescoped over the upper ends of a plurality of slip segments and interfitting means on the segments and a mandrel coact with the retainer to keep the slips locked in place. A longitudinally acting spring reacting against a lateral reaction surface on the mandrel urges against the slip segments to advance them into an initially set position between an expander head of the packer and the interior wall of the casing when the retainer is moved from a locked position into a release position to free the slip segments. A stop acting between the mandrel and the retainer prevents the lower end of the retainer from binding against the slip segments in service use.

REFERENCES:
patent: 2228503 (1941-01-01), Boyd et al.
patent: 2290142 (1942-07-01), Burt
patent: 2323085 (1943-06-01), Davis
patent: 2693859 (1954-11-01), Wright
patent: 2929453 (1960-03-01), Conrad
patent: 3232347 (1966-02-01), Thrane

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