METHOD OF FORMATION OF PROCESS CAVITY IN STABLE ROCKS OF PRODUCING HORIZON Russian patent published in 2002 - IPC

FIELD: mining, particularly, methods of construction of well for water, oil and gas recovery, as well as geotechnological wells. SUBSTANCE: method includes well drilling depth of formed cavity, lowering casing string and hydraulic giant equipment into drilled well; washing of rocks of producing horizon with lifting pulp to surface and formation of chamber. In this case, casing string is lowered through entire depth of well. Washing of rocks of producing horizon is carried out through slots made in casing string. After formation of chamber, casing string is lifted or broken up to level of chamber roof, and worked out space of chamber is filled with granulated material. EFFECT: increased taking capacity of formed cavity in equipment of producing wells and increased their service life. 2 dwg