Optional fire and release tool and method

Details Optional fire and release tool and method Optional fire and release tool and method

1976-06-28

1977-08-09

Novosad, Stephen J.

Wells

Processes

With indicating, testing, measuring or locating

166297, 166178, 166 64, 175 451, E21B 2300, E21B 43119

Patent

active

040404820

ABSTRACT:
Well bore completion method and apparatus which includes a perforating gun suspended from the end of a tubing string. A releasable coulping device is interposed between a stop means and the gun. When the releasable coupling is actuated, the gun, along with the lower marginal portion of the tubing string, is dropped to the bottom of the borehole.
A special tool is run downhole and touches bottom, then raised to contact the stop means, to thereby enable a determination to be made regarding the feasibility of firing the gun. The tool is employed to fire the gun as well as to release the releasable coupling member. Provision is made by which the above sequence of operational steps may be interrupted at any time and the tool removed from the borehole.

REFERENCES:
patent: 2960165 (1960-11-01), Schramm
patent: 3398803 (1968-08-01), Lentmyler et al.
patent: 3414071 (1968-12-01), Alberts
patent: 3696865 (1972-10-01), Chapman
patent: 3888306 (1975-06-01), Wetzel

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