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在分析了低渗油藏水淹层特征的基础上,针对低渗储层自然电位曲线幅度平缓、混合液电阻率求取困难的问题,用电阻率相对值法,建立一套以电阻率相对值法为基础的剩余油饱和度解释方法,避开了混合液电阻率的求取过程。基于可动水分析法,通过聚类分析,建立了利用含水饱和度和束缚水饱和度分级判别水淹层的交会图版,消除了岩性、物性对水淹层解释的影响。实际资料的处理解释和应用,提高了水淹层的解释符合率,见到了良好的地质应用效果。
Based on the analysis of the characteristics of water flooded layer in low permeability reservoirs, aiming at the problem that the curve of natural potential curve of low permeability reservoir is gentle and the resistivity of mixed solution is difficult to obtain, a set of resistivity relative resistivity method Value method based on the remaining oil saturation interpretation method, to avoid the liquid mixture resistivity of the process. Based on the method of movable water analysis, through the cluster analysis, the cross-plot of water flooded layer was established by using the water saturation and irreducible water saturation to eliminate the influence of lithology and physical properties on the interpretation of water flooded layer. The actual data processing and application of interpretation, improve the interpretation of water flooded layer coincidence rate, to see the good effect of geological applications.