DEVELOPMENT METHOD OF MINE WITH HARD-TO-RECOVER OIL DEPOSITS Russian patent published in 2010 - IPC E21B43/24 

FIELD: oil and gas industry.

SUBSTANCE: method involves arrangement of injection and production wells, pumping of air, water, combustion gases and associated gases from products of production wells, and removal of oil, combustion gases and associated gases through production wells. Properties and specimens of rock of producing formation are pre-analysed. Capability of formation for providing active oxidising processes inside formation is determined by initial formation temperature and power potential of formation considering oil oxidation catalysts with oxygen in rock. In case of such capability of formation there first pumped through each injection well is 0.1-0.3% water dispersion of oil oxidation catalysts similar as to composition to formation catalysts, in volume of up to 50-100 m³; then air is pumped, which is enriched with oxygen of up to 30-90 vol. % in volume of 10-40% of threshold volume, and water - in volume of 20-50% of threshold volume.

EFFECT: increasing oil recover of the mine, reducing power consumption and decreasing air pumping volumes.

3 cl, 1 dwg, 3 ex