DEVICE FOR CONSTRUCTION OF UNDERGROUND RESERVOIR IN SOLUBLE FORMATIONS Russian patent published in 1995 - IPC

FIELD: gas industry. SUBSTANCE: device comprises outer perforated and internal pipe strings. The distinguishing feature is a jet apparatus comprised of a nozzle and of interconnected converging tube, mixing chamber and diffuser. The latter has ports facing the holes in the outer string. The internal string has a section deflected from its axis and provided with upper and lower supports secured on its external surface. The outer string has mounting members arranged on its internal surface and capable of interacting with the supports of the internal string. The upper support has a cylindrical hole accommodating the nozzle of the jet apparatus. The lower support has a conical joint with the lower mounting member and a conical hole which accommodates the upper part of the diffuser of the jet apparatus. The internal string is provided with centering ribs. EFFECT: improved design. 1 dwg