FIELD: technological processes.
SUBSTANCE: invention relates to devices for opening and treatment of productive formation and can be used for increasing efficiency of oil wells. Device includes casing with cumulative charges and sealed side holes, cable head, adapter and air chamber. Air chamber - with atmospheric pressure. There is a shutoff element. It is arranged between chamber and housing. At that, the device is made with possibility of the shutoff element opening at the moment of the blast wave leaving from the explosion to the well. Locking element consists of a rigidly fixed ring, in the recess of which a movable wheel is tightly fixed by means of a sealing ring. Opening of movable wheel of shutoff element occurs in direction of housing under action of reflected blast wave from explosion of cumulative charges.
EFFECT: increased efficiency of device operation due to optimization of opening of shutoff element with simplification of its design.
1 cl, 2 dwg, 1 tbl
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