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利用不同微观模型之间的物性差异及其直观性的特点，设计了微观模型组合实验，模拟油层注水，以研究储层非均质对油水运动的影响。通过模型组合实验，可以确定一个合注层段内不吸水小层的渗透率下限，即最低吸水层渗透率Ｋｗｍｉｎ，研究Ｋｗｍｉｎ与合注层段中最大渗透率值Ｋｍａｘ及注水压力梯度之关系，从而可以进一步根据油层的实际注水压力梯度及用该井取心、测井资料确定的渗透率剖面，求取一个合注层段、一口井、一个油藏的最低吸水层渗透率。最低吸水层渗透率值可以用来进行油藏注水开发效果分析，研究油层剩余油分布。应用Ｋｗｍｉｎ对鄯善油田三间房组油层部分注水井合注层段的吸水状况做了初步分析，获得了比较满意的结果。可以预料对最低吸水层渗透率的深入研究，将获得该参数更广泛的用途。
The micro-model combination experiment was designed to simulate the injection of water in order to study the effect of reservoir heterogeneity on the movement of oil and water by taking advantage of the difference of physical properties between different micro-models and their visual characteristics. Through the model combination experiment, we can determine the lower limit of permeability of the non-water-absorbing sub-layer in the injection interval, that is, the minimum water-permeability permeability Kwmin, and study the relationship between Kwmin and the maximum permeability value Kmax and water injection pressure gradient so that a further injection interval, a well and a well can be obtained according to the actual water injection pressure gradient of the reservoir and the permeability profile determined by the well coring and logging data. The lowest permeability layer of the reservoir. The minimum permeability layer permeability value can be used to analyze the effect of reservoir water injection and study the distribution of remaining oil in the reservoir. Kwmin was used to carry out a preliminary analysis on the water absorption of the injection well in some injection wells of Sanfangfang Formation in Shanshan Oilfield, and the satisfactory results were obtained. An in-depth study of the permeability of the lowest water-absorbing layer can be expected to achieve a broader use of this parameter.