Actuation indicator for downhole tools

Details Actuation indicator for downhole tools Actuation indicator for downhole tools

1987-11-17

1989-05-16

Massie, Jerome W.

Wells

Expansible anchor or casing

Spring set

166217, E21B 2303

Patent

active

048301043

ABSTRACT:
A mechanical indicator and arresting apparatus for use with downhole tools which are extendable through wellbore tubing strings by a wireline cable or the like. The indicator apparatus includes a body supporting an elongated actuating rod which is movable longitudinally by an actuator member associated with the tool to extend a plurality of arresting fingers which are pivotally mounted on the body member from a retracted position, which permits movement of the indicator through the tubing string, to an extended position for engaging a transverse surface on the tubing string to arrest movement of the indicator in at least one direction of movement through the tubing string. The actuating rod includes a latch member for holding the fingers in a retracted position and a spring biased plunger is engageable with the fingers to move the fingers to their extended position in response to movement of the actuating rod.

REFERENCES:
patent: 2924278 (1960-02-01), Garret et al.
patent: 2991835 (1961-07-01), Schwab
patent: 4616703 (1986-10-01), Laurent et al.

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