Wells – Packers or plugs – With expanding anchor
Patent
1985-09-26
1986-11-25
Novosad, Stephen J.
Wells
Packers or plugs
With expanding anchor
166208, 166212, E21B 2302
Patent
active
046243119
ABSTRACT:
A running tool for a hydraulically set packer, hanger, or the like, having expandable slip elements held in a retracted position by an actuating sleeve during run-in, employs an annular piston to hold the actuating sleeve in a fixed locked position relative to the tubular body portion of the running tool, thus preventing inadvertent setting of the tool due to impacts received during the run-in of the tool. When the slips are positioned at their desired location in the well, an increase in fluid pressure applied to the tubular body portion of the running tool will effect an upward movement of the annular piston, shearing a shear screw which has held the piston during the run-in operation, releasing a positive lock engaged with the slip actuating sleeve, and effecting upward movement of the actuating sleeve to release the slips. A contractible ring is also moved by the piston and effects the locking of the actuating sleeve in an upward position after the slips are released, thus eliminating the possibility of the slips being unset by inadvertent downward movement of the actuating sleeve.
REFERENCES:
patent: 2916092 (1959-12-01), Burns
patent: 3152643 (1964-10-01), Burns
patent: 3677341 (1972-07-01), Burn et al.
patent: 4287949 (1981-09-01), Lindsey, Jr.
patent: 4393931 (1983-07-01), Muse et al.
patent: 4497367 (1985-02-01), Stevenson
Baker Oil Tools, Inc.
Neuder William P.
Novosad Stephen J.
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