Patent ID: 8302523
Filing Date: 2012-11-06
Classification: E21B,F42B,F42D

Abstract:
1. An explosive well tool firing head comprising: an axially elongated housing means having first and second, axially opposite, ends; first assembly means at said first end compatible with attachment to operating signal carrier means; second assembly means proximate of said second end compatible with attachment to an explosive well tool means; operating signal contact means within said housing means proximate of said first end for operatively receiving an operating signal from a signal carrier means; detonator retainer means in said housing proximate of said second end for securing the position and alignment of an electrically initiated explosive detonator an electrically initiated explosive detonator secured by said retainer means to project axially beyond said second end of said housing means; a capacitive firing cartridge within said housing means between said contact means and said detonator retainer means; electrical continuity connections of said contact means with said firing cartridge; and, electrical continuity connections of said firing cartridge with said detonator.