DETONATING DEVICE BASED ON HIGH EXPLOSIVE AGENT Russian patent published in 2018 - IPC F42B3/10 

FIELD: blasting operations.

SUBSTANCE: invention relates to explosive works, in particular to detonating devices for explosive heads of cumulative perforators, descending into oil and gas wells on production strings. Device comprises a steel body in which a striker, an cap primer, a propellant charge, a projected obstacle and a detonator installed in the bushing are successively placed. Cap primer and propellant charge are made of an explosive agent, the flash point of which exceeds by not less than 75 °C the flash point of the explosive agent of the detonator. Distance L between the cap primer and the detonator is chosen according to the condition L/Δ_s ≤ 7, where Δ_s – the total thickness of the wall of the steel casing and the bushing in the area where the detonator is located.

EFFECT: design is simplified and the manufacturability of the equipment is improved while ensuring fire and explosion safety.

1 cl, 1 dwg