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相对渗透率通常是在室温下测定的,其实验温度要比油藏温度低很多,以前研究高温相对渗透率实验用的岩心偏向于亲油。针对轮南油田油藏温度高的特点和束缚水饱和度对相对渗透率曲线的关键性,分别用特殊实验来研究了温度升高对亲水岩心束缚水饱和度的影响,及其对相对渗透率曲线特征的影响。室内实验结果表明,亲水岩心的束缚水饱和度随实验温度上升而下降,相对渗透率曲线向左移;亲油岩心的束缚水饱和度随温度升高而增大,本文用水化膜,毛管力和润湿性等方面理论,宏观上和微观上解释了实验结果。
Relative permeability is usually measured at room temperature, the experimental temperature is much lower than the reservoir temperature, the core of the previous study of high temperature relative permeability experiment with a biased lipophilic. In view of the characteristics of reservoir temperature in Lunnan Oilfield and the key of irreducible water saturation to the relative permeability curve, the influences of temperature rise on the irreducible water saturation of hydrophilic cores and their effects on relative permeability Rate curve characteristics of the impact. The experimental results show that the irreducible water saturation of hydrophilic cores decreases with the rise of experimental temperature, and the relative permeability curves shift to the left. The irreducible water saturation of oleophilic cores increases with the increase of temperature. In this paper, Force and wettability theory, macroscopically and microscopically explained the experimental results.