FIELD: oil, gas and coke-chemical industries.
SUBSTANCE: invention relates to perforating-explosive operations in oil and gas wells. Cumulative perforator comprises cumulative charges enclosed in a sealed shell for each charge or common for all charges, and means of initiation. Extra throwing element is installed on sealing cover opposite to each cumulative charge. Higher efficiency of cumulative jet operation is provided after passage of solid barrier in form of sealing shell, to obtain better filtration characteristics of the per-channel and with possibility of changing the geometrical shape and/or size of the per-channel depending on the used additional throw-in element.
EFFECT: efficiency is achieved without placement of additional bodies and chemically active substances inside cumulative charge.
10 cl, 3 dwg
