METHOD FOR DEVELOPMENT OF OIL DEPOSIT Russian patent published in 1997 - IPC

FIELD: oil production industry. SUBSTANCE: this can be used for development of oil deposit in cyclic mode. Method implies periodic pumping of oil emulsion and working agent through injection wells, recovery of oil through producing wells. At periodic injection of oil emulsion, also effected is periodic injection of gel-formation material. Their equivalent volumes of injection prior to reduction of well injectivity is 30-70% lower than established earlier. Injection of working agent is effected up to reservoir pressure which exceeds initial pressure by 0.5-1.5 MPa with subsequent stoppage of injection wells until reservoir pressure is by 0.5-1.5 MPa below initial reservoir pressure. EFFECT: high efficiency.