本文基于多孔介质的气孔分布特性,计算了多孔介质在含水状态下的扩散性能,并且比较了采用两种方式计算相对渗透率时的相对扩散性能。其结果表明,基于气孔分布的计算结果低于与气孔分布无关的计算结果。另外,疏水性含水多孔介质的扩散性能低于亲水性含水多孔介质的扩散性能,基于气孔分布计算含水多孔介质的气体扩散性能时,Wyllie公式并不适用。
In the paper,the diffusivity character for porous media with liquid water is calculated and compared based on the pore size distribution of porous media by two ways of calculating the relative permeability.The results show that the calculated results based on the pore size distribution of porous media are lower than that of foreign to the pore size distribution of porous media.In addition,the relative diffusivity of hydrophobic porous medium are lower than that of hydrophilic porous media. Wyllie equation to calculate relative permeability is not applicable to the calculation of the diffusivity character for porous media with liquid water based on the pore size distribution of porous media.
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