SHAPED CHARGE (MODIFICATIONS) Russian patent published in 2003 - IPC

FIELD: geophysics, in particular, well shooting and blasting. SUBSTANCE: the shaped charge has a body with a hollow, whose generating surface is made with a variable diameter decreasing from the base to the vertex of the hollow, explosive and a facing, the generating surface of the body hollow is made in the form of a series of cylindrical grooves. The effect is attained by the fact that in the shaped charge, having a body with a hollow, whose generating surface is made with a variable diameter decreasing from the base to the vertex of the hollow, explosive and a facing, the generating surface of the body hollow is made in the form of a series of grooves representing truncated cones, whose vertices are directed to the hollow base. EFFECT: enhanced piercing action and stability of operation of the shaped charge. 2 cl, 2 dwg