Well drilling tool

Details Well drilling tool Well drilling tool

1981-11-27

1984-02-14

Novosad, Stephen J.

Wells

Means for guiding insertable element laterally of well axis

166381, 166316, 166301, E21B 3114

Patent

active

044310536

ABSTRACT:
A special tool for use in fishing operations during well drilling when a so-called string shot is used. The tool is made up of a hollow sub that may be connected into a string of pipe for lowering in the well. And, it includes a sliding sleeve in the sub. There is a gate in the wall of the hollow sub that is held in place by the sliding sleeve so as to leave the hollow sub open when a preliminary fishing opertion is attempted. And, there is means associated with the sleeve for sliding it to a different position so that the gate will be shifted in order to guide a string shot to the outside in case the inside of the fish is plugged.

REFERENCES:
patent: 2558227 (1951-06-01), Yancey et al.
patent: 3139932 (1964-07-01), Johnson

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