Shock actuated switch for perforating gun assembly

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...

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Bibliographische Detailangaben
Hauptverfasser:	SUMNER, CYRIL R, WARREN, DAVID R
Format:	Patent
Sprache:	eng
Schlagworte:	AMMUNITION BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS HEATING LIGHTING MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS WEAPONS
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Beschreibung
Zusammenfassung:	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.