Patent ID: 8943970
Filing Date: 2015-02-03
Classification: C06C,E21B,F42C,F42D

Abstract:
1. A method of igniting a pyrotechnic charge downhole in a well comprising: providing a first pyrotechnic device, an energy transfer device, and a second pyrotechnic device, said energy transfer device comprising a metallic body having a forward section, an aft section, and an axial passageway extending therethrough; igniting said first pyrotechnic device to detonate an output charge; and directing at least a portion of the energy from the detonation of said output charge through said axial passageway toward said second pyrotechnic device thereby igniting said second pyrotechnic device, wherein said first output charge deforms at least a portion of said energy transfer device forward section resulting in the formation of a constriction in said passageway, and wherein said first output charge results in the generation of hot gases and/or solid material at least a portion of which are directed through said passageway and said constriction toward said second pyrotechnic device.