Results show that initial water saturation swi has a strong effect on rate of imbibition of sandstone system.

结果表明，束缚水饱和度对砂岩体系自吸速度有较强的影响。

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Many factors affect the process of spontaneous imbibition. This paper is focused on the effect of initial water saturation and rock lithology on rate of imbibition and oil recovery.

影响自吸的因素有很多，文中主要研究束缚水饱和度和岩石性质对自吸速度及采收率的影响。

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The method is provided based on the principle that the wettability of rock surfaces is a key factor affecting the spontaneous imbibition rate as the rock contacts fluids.

该测定方法所依据的原理是，当岩石与流体接触时，其表面的润湿性是影响自吸速率的一个关键因素。

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