METHOD FOR RECOVERY OF MINERALS Russian patent published in 1999 - IPC

FIELD: mining industry. SUBSTANCE: method can be used in recovery of heavy high-viscous oil and bitumen. According to method, bed is opened by means of at least one injection well and one producing well. They are treated by high-frequency electromagnetic field. Simultaneously with treatment of injection valve by high-frequency electromagnetic field, undertaken is injection of solvent or mixture of solvents into bed. Treatment of injection well by high-frequency electromagnetic field is carried out with ensuring determined temperature at bottom hole within following range: Tf <T <Tb, where Tf - temperature of fluidity of bed fluid, Tk - temperature of solvent boiling. Solvent is injected in amount sufficient for reaching producing well. Temperature at bottom hole of injection well is adjusted. Treatment of this well after lowering of bottom-hole temperature not below bed temperature is performed in cyclic manner. Solvent is injected at flow rate determined by corresponding relation. EFFECT: higher efficiency. 1 cl