METHOD FOR DEVELOPMENT OF OIL FIELD Russian patent published in 1994 - IPC

FIELD: oil and gas producing industry. SUBSTANCE: increased oil recovery and/or intake capacity of injection wells of oil field with clay containing reservoir is attained due to the fact that before injection through injection wells to clay-containing reservoir of mineralized displacing water and withdrawal of fluids through producing wells, the coefficient of clayiness of oil reservoir is determined and, simultaneously with injection of mineralized displacing water, the field of elastic vibrations in oil reservoir is set up with vibration acceleration in excess of 0.1 g, where g is acceleration of free fall. In this case, mineralization of injected displacing water is taken in compliance with relation , where C is mineralization of displacing water, g/l; A is coefficient determining the range of variation of mineralization value of injected water in the interval of 0.75-1.1; CI is mineralization ensuring maximum coefficient with clayiness coefficient K_гл of reservoir, g/l; B is coefficient determined experimentally at maximum effect, g/(1x%); г/(л·%); K_гл is reservoir clayiness coefficient, % ; K_гл is clayiness coefficient for which mineralization Cl is found,%. When intake capacity of injection wells decreases, injection pressure is increased step by step. In so doing, field of elastic vibrations is set up and removed periodically. EFFECT: higher efficiency. 2 dwg