流动模拟法预测三维孔隙介质的渗透率

介绍一种通过岩心薄片预测渗透率的新方法。该方法首先对薄片图像进行分析，确定薄片孔隙度和自相关函数，然后应用地质统计方法建立三维孔隙介质模型，最后采用LATTICE-BOLTZMANN方法直接进行三维流动模拟，从而通过计算流体流量估计渗透率。经验关系式法预测的渗透率、流动模拟法预测的渗透率和实验室测量渗透率的对比结果表明，基于经验关系式的传统方法预测的渗透率和三维孔隙介质流动模拟的渗透率值表现出了相同的误差趋势，但流动模拟方案的渗透率值比经验关系式的渗透率值更符合实验室测量结果，条件流动模拟的结果比非条件流动模拟的结果稍好。

Permeability Prediction of Three Dimensional Porous Media through Flow Simulation Method

A new method for predicting permeability of thin sections cut from cores is introduced. First step of this method is to determine porosity and autocorrelation function through thin section image analysis. Then 3 D porous media are to be built by using geological statistical method. Finally, 3 D flow is to be simulated directly by applying LATTICE BOLZMANN method. As a result, the permeability can be estimated by calculating the fluid flux. The permeability estimated from experimental equation, the permeability calculated from flow simulation method,and the permeability measured in laboratory were compared. The permeability predicted from experimental equation and the permeability calculated from flow simulation in 3 D porous media demonstrat same error trend. Whereas, the permeability calculated from flow simulation scheme is more accordant with the measured results than that predicted from experimental equation method. The result of conditioned flow simulation method is a little bit better than that of non conditioned one.