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

FIELD: oil production industry. SUBSTANCE: this can be used in development of deposits of oil possessing non-Newtonian properties, and also of high-paraffined and high-viscous oil. According to method, oil is recovered through producing wells, therefore water is injected through injection wells. Water is heated due to heat exchange with rock material. In determining technological mode of stage-by-stage injection of water, preset for each stage is amount of water to be injected which is heated up to given temperature. Determined is interval of time for operation of well at technological pause for heating of water with which well is filled. With taking into account non-Newtonian properties of oil in bed, determined is dependence of reducing injectivity of injection well on duration of injection, and also dependence of restoration of well injectivity at technological pause on heating of water. Determined is time interval of well operation for injection of heated water into oil bed. Well is filled with water which is not heated on surface. Preset are technological modes of injection process at each stage in two well operation intervals: technological pause for heating water and injection period. Duration of one stage is determined according to formula given in description. Application of aforesaid method ensures more efficient influence of water injection on displacement of oil. EFFECT: higher efficiency. 3 dwg, 1 tbl