Perforating gun actuator

Details Perforating gun actuator Perforating gun actuator

1994-11-22

1996-02-13

Tsay, Frank S.

Wells

Processes

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

166299, 175 456, E21B 2900, E21B 4311

Patent

active

054905630

ABSTRACT:
An actuating tool which is conveyed into a tubing string to attach to portions of an emplaced perforating gun. The tool includes an actuator with an electronic delay timer and an explosive device. The tool attaches to an emplaced perforating gun and detonates it by initiating an explosive charge along a complete explosive pathway formed between the actuator and gun, the actuator includes a tandem piston arrangement functional at most existing hydrostatic pressure levels, but nonfunctional at or near the surface of the wellbore. The tool may be withdrawn from the tubing string for a backup detonation tool to be placed into the tubing string to detonate a secondary firing head.

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