CUMULATIVE PERFORATOR FOR WELL Russian patent published in 2004 - IPC

FIELD: well explosive operations technologies.

SUBSTANCE: device has frame of rods, in amount more than two, mounted along length of device. Also provided are cumulative charges placed along device length in form of garland. These are placed in frame and/or on frame and are made with slits on side surface for fixing in rods of frame. Also present is assembly for initiation of cumulative charges and means for screening explosions of adjacent cumulative charges placed between these charges. Means for screening explosions serve as additional means for fixing cumulative charges and frame rods in given position. Adjacent cumulative charges are displaced relatively to one another in at least cross section plane of device, at each step of placement of these charges along device length at same and/or different angle in one and/or different directions of angle count.

EFFECT: higher efficiency.

10 cl, 1 dwg