METHOD OF MULTIPURPOSE EXPLOITATION OF HYDROCARBON AND MINERAL RESOURCES Russian patent published in 2001 - IPC

FIELD: mining, exploitation and utilization of oil and mineral resources of deposits, particularly, on which oil- gas formation-reservoir has metal ore or other useful mineralization of commercial concentration. SUBSTANCE: method includes drilling of rows of wells tapping metal-bearing oil-saturated formation from ground surface or from underground mine workings for producing oil preliminarily heated with steam. Ore mineral deposit is mined with subsequent filling. After recovery of main oil reserves in order of 90%, remaining oil reserves are burnt in formation with supply to fire seat of water-air mixture. Combustion products and hot water are removed after passing high-temperature section of formation and directed to steam generator. Formed steam from steam generator is injected into formation for recovery of remaining resources of oil. Dirty condensate is directed for burying in worked out part of formation. Two wells are used for injection of cold water and water for hydraulic breakage of metal-bearing bed. Then, slurry is lifted by air lift from formed chamber for separation into concentrate and tailings. The latter are used for filling of worked out parts of bed. Cyclic mining is repeated with displacement of process to one well. EFFECT: reduced expenditure for drilling of injection wells in barren rocks and for maintaining and ventilation of mine workings. 2 cl, 1 ex