COMPACT SEISMIC CHARGE Russian patent published in 2018 - IPC F42B1/04 

FIELD: blasting.

SUBSTANCE: charge for stimulation seismic vibrations includes an elongated cylindrical shell of polymeric material, equipped at both ends with fastening elements for assembling charges in a garland. The explosive charge is placed in a shell with a central socket on the side of the upper end intended for placement of priming means of initiation. The explosive charge is linked from draughts of different lengths and different kinds of ballistic-solid rocket fuel and blasting explosive for one or several checkers, generating from the upper end of the central nest. To protect the explosive charge from an unauthorized external action, a plug is screwed into the upper end of the inner threaded casing, and a lid is screwed onto the lower end of a smaller diameter with the external thread. In this case, the transition from a larger diameter to a smaller one is made from the inside of the shell in the form of a confuser. As a brisant explosive, phlegmatized hexogen, phlegmatized octogen, or tetryl, or mixtures of them with low-clotted explosive charge - TNT or dinitronaphthalene are used. Additionally, ceresin, or stearin, or paraffin, or graphite, or a composition thereof can be used.

EFFECT: providing the possibility of safe handling of charges, storage, and transportation, maintaining efficiency at extreme temperatures and long-term presence in watered wells.

8 cl, 1 tbl, 4 dwg