METHOD FOR DEVELOPMENT OF OIL DEPOSIT Russian patent published in 1998 - IPC

FIELD: oil production industry. SUBSTANCE: this can be used in developing oil deposit with low-permeable reservoir. According to method, oil is recovered through producing wells. After reducing bed pressure by 15-20%, established is fund of injection wells. Hydraulic fracturing of bed is performed in wells. Used as working agent is mineralized brine water from lower horizon. Deposit is developed in mode of increased bed pressure until initial bed pressure is achieved. Then, development is carried out in mode of maintaining bed pressure. After displacing front reaches producing wells, change is made to injecting working agent containing polymer with concentration of 0.00005-0.0015%. EFFECT: higher efficiency.