UNIT OF CUMULATIVE PERFORATOR Russian patent published in 2009 - IPC E21B43/117 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to devices for oil recovery and can be used in composition of cumulative perforators. Unit of cumulative perforator relates to devices for oil production and can be used in the composition of cumulative perforators. Unit of cumulative perforator contains framework 1 and located in it cumulative charges 2. In places of head location 3 of cumulative charges 2 in framework 1 there are implemented holes with joined to holes edges hollows 5 and projections, located accordingly on opposite edges of holes. On head 3 of each cumulative charge 2 it is located annular collar 7 with formation between it and body of cumulative charge 2 groove, width of which is defined by thickness of framework wall 1. In annular collar 7 there are implemented flats, located diametrically opposite. Distance between projection edjes, located on opposite sides of holes, is equal or more the distance between flats plane, located diametrically opposite, but not more the groove diametre. Additionally distance between flats planes, located diametrically opposite, can be equal or less the groove diametre.

EFFECT: manufacturability increasing and design simplification of unit of cumulative perforator.

3 dwg