OIL FIELD EXPLOITATION METHOD Russian patent published in 1995 - IPC

FIELD: oil extracting industry. SUBSTANCE: oil with oil-dissolving surface-active substance or with oil-dissolving polymer is used as foam creating agent. Before foam creating agent is pumped in stratum its foam creating capability is determined by pumped gas passing through it in stratum conditions. In the case, ratio of volumes of gas and water fringes is determined according to formula. Foam creating agent, gas and water fringes pumping in is exercised through pumping in borehole and oil extraction is exercised through extracting borehole. EFFECT: method is used in oil extracting industry.