PROCESS OF FORMATION OF UNDERGROUND RESERVOIRS Russian patent published in 1996 - IPC

FIELD: mining industry. SUBSTANCE: invention makes it possible to raise efficiency of formation of underground reservoirs in rocks of various strength having low penetrability. Cost of reservoir having space of 30,000-50,000 sq.m in this case diminishes by 25-40% as a minimum as compared with traditional methods. Time of its formation reduces by 20-25% as a minimum. For formation of underground reservoir hole is drilled, is fixed with strings of pipes and steam-and-gas mixture with 3-12% fraction of gas in total mass and temperature (T_seam+150^°)<T_cr is supplied in turn into face, where T_seam is seam temperature, C; T_cr= 373 ^°C is critical temperature of water steam and fluid. Steam-and-gas mixture is supplied until removal of broken rock is stopped and pressure 0.05 σ_tens<P≅P_s.g.m is created in reservoir, where σ_tens is tensile strength of rocks; P_s.g.m is pressure of supplied steam-and-gas mixture. After this fluid is pumped into reservoir until start or removal of broken rocks. Steam-and-gas mixture supplied into reservoir has constantly rising temperature. EFFECT: raised efficiency of formation of underground reservoirs, diminished cost and time of their formation. 3 cl, 1 tbl, 5 dwg