Perforating gun actuator

Details Perforating gun actuator Perforating gun actuator

E - Fixed Constructions

21

B

E21B 43/116 (2006.01) E21B 41/00 (2006.01) E21B 43/1185 (2006.01)

Patent

CA 2163410

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 non-functional 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 The tool may be withdrawn from the tubing string for a backup detonation tool to be placed into the tubing string to detonate a secondary firing head.

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