BOREHOLE PERFORATOR AND METHOD FOR ITS ARMING Russian patent published in 2015 - IPC E21B43/116 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions is related to the sphere of production of liquid and gaseous fluids from bore wells. The borehole perforator comprises a charging tube including explosive load, electrical conductor and detonating cord; arming unit comprised of detonator and electrical connector and made so that it can move between initial position and explosive position, at that in initial position the arming unit is coupled electrically to the loading tube and coupled ballistically to the loading tube, while in explosive position the arming unit is coupled electrically ballistically to the loading tube; and locking device that allows rotational movement of the arming unit in regard to the loading tube between the initial and explosive positions and locking device that locks axial movement of the arming unit in regard to the loading tube when the arming unit is in explosive position.

EFFECT: arming of the perforator is ensured without interruption of electrical continuity between electrical conductors, which were installed into the initial position.

22 cl, 10 dwg