Wells – Packers or plugs – With expanding anchor
Patent
1977-07-25
1978-12-26
Purser, Ernest R.
Wells
Packers or plugs
With expanding anchor
166182, E21B 33128, E21B 33129
Patent
active
041311604
ABSTRACT:
A well tool for use in a tubular well conduit comprising a tool body including at least one radially extendable element for engaging the well conduit, and first and second tool body portions. The tool body portions are operatively associated with the radially extendable element and relatively movable longitudinally toward each other to extend the radially extendable element. Such movement is effected by longitudinal movement of a mandrel assembly which is engageable with the second tool body portion whereby they together form an actuator. The tool further comprises lock means cooperative between the actuator and the first tool body portion to limit movement of the tool body portions away from each other thereby locking the radially extendable element in its extended position. Tightening means associated with the lock means tightens the lock means responsive to fluid pressure acting in a direction opposite the direction of movement of the actuator during setting. The same or similar pressure responsive means may also serve to resist movement of the first tool body portion during setting.
REFERENCES:
patent: 3279542 (1966-10-01), Brown
patent: 3357489 (1967-12-01), Brown
patent: 3412801 (1968-11-01), Young
patent: 3426846 (1969-02-01), Young
patent: 3467184 (1969-09-01), Young
patent: 3508610 (1970-04-01), Kisling
patent: 3552489 (1971-01-01), Berryman
patent: 4018274 (1977-04-01), Cochran
Brown Oil Tools, Inc.
Purser Ernest R.
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