CHARGE TO EXCITE SEISMIC OSCILLATIONS 3SB-A AND METHOD TO MAKE CHARGE Russian patent published in 2011 - IPC C06C7/00 F42B1/04 

FIELD: explosives.

SUBSTANCE: charge to excite seismic oscillations comprises a cartridge with an axial channel and a dead hole made at one of the ends, where an intermediate initiator (II) is located, as well as a fixing element (FE), which prevents II fallout from the cartridge. The FE is arranged in the form of a ring with the inner concave or straightened face at the upper end. The charge elements are made of an explosive, which contains the following components in certain ratios - a ballistic solid rocket propellant (BSRP) or a composition of BSRP and a ballistic artillery powder, and a brisant explosive, technological, retarding and hydrophobic additives. The method to make the charge includes operations of FE moulding or joint moulding of FE and II directly in the dead hole of the cartridge, as a result of which the charge elements form undetachable connections.

EFFECT: improved serviceability at low temperatures and long-term stay in flooded wells.

18 cl, 8 dwg, 1 tbl