Motorized wellbore fishing tool

Details Motorized wellbore fishing tool Motorized wellbore fishing tool

1988-07-20

1989-08-15

Neuder, William P.

Wells

Grapple and well anchored lifting means

166301, 294 8614, 294 8633, E21B 3118

Patent

active

048565822

ABSTRACT:
A motor operated fishing and setting tool for wellbore instruments and apparatus includes a tubular body member, a lower guide member having a conical surface formed therein and an inner sleeve with an elongated bore for receiving a fishing head. The fishing head includes an annular groove for receiving plural ball keys which are retained in openings formed in the inner sleeve member. The ball keys are controlled by an outer sleeve member movable between a position for forcibly holding the ball keys in registration with the groove in the fishing head and a retracted and radially outwardly displaced position to permit uncoupling of the fishing head from the tool.

REFERENCES:
patent: 2427438 (1947-09-01), Breaux
patent: 2794670 (1957-06-01), Menegus et al.
patent: 2954258 (1960-09-01), Cook
patent: 3741601 (1973-06-01), Ridley
patent: 4591197 (1986-05-01), Akkelmann

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