Shock actuated switch for perforating gun assembly

Details Shock actuated switch for perforating gun assembly Shock actuated switch for perforating gun assembly

1987-07-13

1988-10-18

Massie, Jerome W.

Wells

Means for perforating, weakening, bending or separating pipe...

With disparate below ground feature

166 66, 200 6101, 89 115, E21B 43116

Patent

active

047780096

ABSTRACT:
For use in a perforating gun assembly which incorporates an explosive for detonation of a string of shaped charges, all the explosive materials forming a significant, violent pressure shock wave propagated up a cased well borehole, a pressure actuated switch includes an enlarged piston having a head exposed to the pressure shock wave, a stem connected to said head, bifurcated fingers capturing a resilient material therebetween to permit flexure, a surrounding sleeve which is made of metal and defined in multiple portions, and a plurality of metal contacts contiguous to said stem and adapted to be selectively contacted by said metal sleeve to either make or break on movement of said piston.

REFERENCES:
patent: 3196974 (1965-07-01), Barnes, Jr.
patent: 3398803 (1968-08-01), Leutwyler et al.
patent: 3594745 (1971-07-01), Nickels
patent: 3648785 (1972-03-01), Walker
patent: 4011815 (1977-03-01), Garcia
patent: 4566544 (1986-01-01), Bagley et al.

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