Subterranean well tool with pressure-equalizing release

Details Subterranean well tool with pressure-equalizing release Subterranean well tool with pressure-equalizing release

1984-07-16

1986-05-06

Novosad, Stephen J.

Wells

Packers or plugs

With expanding anchor

166129, 166133, 166322, E21B 33126, E21B 33129, E21B 3408

Patent

active

045865671

ABSTRACT:
A retrievable well tool for use in a subterranean well conduit utilizes plural valving elements to establish a fluid bypass around at least one annular elastomeric sealing element in response to movement of a control mandrel. The annular elastomeric sealing element actuates slips carried on the tool to engage the conduit wall in response to a differential pressure across the sealing element. The fluid bypass established by movement of the control mandrel is accomplished prior to an effective disengaging movement being imparted to the actuated slip elements.

REFERENCES:
patent: 3122205 (1964-02-01), Brown et al.
patent: 3266576 (1966-08-01), Chenoweth
patent: 3460616 (1969-08-01), Tucker et al.
patent: 3526277 (1970-09-01), Scott
patent: 4460041 (1984-07-01), Berryman

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