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

FIELD: electrical engineering; instrument making.

SUBSTANCE: invention relates to cumulative hollow carrier perforators and is intended to perforate well walls. Perforator comprises separate modules connected to each other by modules connection units, each of which has cumulative charges and detonation circuits based on detonating cords connected to each other. Each modules connection unit is composed of two parts interconnected by a detachable articulated joint. In the first part of the connection unit there is a lead charge, connected via the first receiving charge to the detonating cord of the first module. In the second part of the connection unit, there is a second receiving charge, connected to the detonating cord of the second module. On the upper part of the second part of the connection unit, a destructible all-metal thin-wall plug-cap, in the axial channel of which the receiving-lead charge is installed, is hermetically fixed. Metal disk is attached to the end of the receiving-lead charge on the second receiving charge side, wherein the plug has an axial recess at the end face from the inside. Lead charge relative to the first receiving charge and the receiving-lead charge relative to the second receiving charge are installed with air gaps for detonation transmission.

EFFECT: increased reliability of operation of the detonation transfer unit between modules is provided.

1 cl, 1 dwg