WELL PERFORATOR Russian patent published in 2018 - IPC E21B43/117 

FIELD: oil and gas industry.

SUBSTANCE: perforator comprises a monolithic body (6) with cavities (5) made in it perpendicular to its longitudinal axis, which are made directly in the material of the perforator body. Separately made mutually conjugate constructive parts of cumulative charge are tightly fitted directly in the cavities (5): outer cover (1) of the cumulative charge, a seal curtain-washer (2) or a gland, a cumulative funnel (3), a cartridge (4) of the main explosive. In addition, a detonation transfer amplifier (7), a sealing gasket (9), a detonating cord (10) and a bushing (11) with a groove are disposed in the body (6). Each charge is connected to the detonating cord (10), located in the channel made on the outer surface of the body and ballistically connected through the hole (8) with the cartridge (4) in the cavity (5). The cartridge (4) of the explosive of each of the charges is fixed directly to the body cavity (5) and is provided with a cumulative funnel (3) mounted thereon with an outer cover (1).

EFFECT: increased efficiency of devices uses, simplification of its production, expanding the range of technologies and materials used for the production, reduced material consumption and number of components required for assembling.

7 cl, 3 dwg