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砾岩油藏二次开采结束后,其采收率较低,地下仍存在大量的剩余油。润湿性是控制这些剩余油分布的一个重要因素,它强烈影响着砾岩油藏水驱动态、毛管压力和相对渗透率。应用数值模拟方法着重研究了油藏水平上不同润湿情况下砾岩油藏剖面上剩余油饱和度的分布,以及砾岩层序韵律和油层厚度对油相饱和度分布的影响,并引入无因次变量对其模拟结果进行了分析。
Conglomerate reservoir after the second mining, the recovery rate is low, there is still a lot of residual oil underground. Wettability is an important factor controlling the distribution of these remaining oils, which strongly influences the water-driven behavior, capillary pressure and relative permeability of conglomerate reservoirs. The distribution of residual oil saturation in the profile of conglomerate reservoir with different wetting conditions and the influence of conglomerate sequence and reservoir thickness on the oil saturation distribution are studied emphatically by using numerical simulation method. The sub-variables analyzed the simulation results.