ORIENTED CUMULATIVE PERFORATOR Russian patent published in 2012 - IPC E21B43/117 

FIELD: oil and gas industry.

SUBSTANCE: hollow-carrier cumulative perforator consists of sections and frame with cumulative charges. Each section consists of tubular housing and connecting sealing external coupling, which form full-passage through cavity when being screwed together. Frame with cumulative charges is installed in cavity of tubular housing, with attachment assembly of frames to common uninterrupted garland without any breaks with common detonating cord. Frame is made of heavy diverting segment with light-weight cassette with installation seats of charges, which is connected to it and which orients the charge rows relative to the segment. Garland is fixed in swivel device above upper section of perforator.

EFFECT: improving operating quality and reducing the manufacturing costs of oriented perforation.

6 cl, 6 dwg