METHOD FOR DEVELOPMENT OF OIL DEPOSIT Russian patent published in 2000 - IPC

FIELD: oil and gas production industry. SUBSTANCE: method can be used in development of oil deposits with non-uniform reservoirs. According to method, oil is recovered through producing wells, and working agent is injected through injection wells in non-stationary mode of operation. Oil is preliminarily pressure-forced into bottom-hole zone of producing wells for creation of higher oil saturation up to values of 0.75-0.9. Pressure-forcing of oil into bottom-hole zones of producing wells is carried out in non-stationary mode of operation. Prior to pressure-forcing of oil into bottom-hole zones of producing wells, performed is pressure-forcing into bottom-hole zones of producing wells is water solution of hydrophobic substance. Application of aforesaid method is of higher efficiency due to increased oil recovery from deposit. EFFECT: higher efficiency. 1 cl, 1 tbl, 4 ex