基于实验的泥质砂岩含水饱和度计算方法

The Calculation of Shaly Sands Water Saturation Based on Experiments

以泥质砂岩导电性实验和简化的岩石导电模型为基础,分析了泥质砂岩电阻率影响因素。确定了泥质附加导电的大小。淡水条件下的泥质附加导电性的大小不但与泥质体积有关,而且与地层水电阻率、孔隙度的大小有关,据此给出了一种简单的含水饱和度计算方法。实际应用表明,所给出的含水饱和度计算方法简便易行,泥质校正合理,所提供的含水饱和度比较准确,可以推广应用。

Based on experiments of shaly sands conduction and simplified rock conductivity model, we analyzed effects of shaly sands resistivity, and determined an appended conduction of shale. A simple calculation method of water saturation can be obtained from the appended conduction of shale which is relative to the clay volume , formation water resistivity and porosity under the condition of fresh water. The actual application shows that this method is simple and effective, the clay content correction is reasonable and the calculation of water saturation derived from this method is accurate. This method can be expended in actual application.