Automatic separation device for use with wireline conveyed perfo

Details Automatic separation device for use with wireline conveyed perfo Automatic separation device for use with wireline conveyed perfo

1986-10-02

1988-08-23

Novosad, Stephen J.

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

166 551, 285 3, E21B 4311

Patent

active

047654090

ABSTRACT:
Method and apparatus for automatically separating a wireline conveyed through-tubing perforating gun from a cable assembly. The gun is joined to a hollow sleeve on the cable assembly by a sub closely received in each end retained thereto by shear members. The force of the explosion upon firing the gun shears the shear members and drives the sub into the sleeve, allowing the gun to drop into the well.

REFERENCES:
patent: 2957414 (1960-10-01), Hodgson
patent: 2965031 (1960-12-01), Johns
patent: 3246707 (1966-04-01), Bell
patent: 3398803 (1968-08-01), Leutwyler et al.
patent: 3441093 (1969-04-01), Boop
patent: 3966236 (1976-06-01), Vann
patent: 4066282 (1978-01-01), Vann
patent: 4179991 (1979-12-01), Echols et al.
patent: 4314614 (1982-02-01), McPhee et al.
patent: 4601492 (1986-07-01), George

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