低孔低渗储层含水饱和度的确定

含水饱和度是评价储层含油性的一个非常重要的参数。定量计算含水饱和度通常是采用阿尔奇公式,该公式是在地层不含泥质及具有均匀较高孔隙度砂岩的条件基础上岩电实验的结果。在实际地层中岩电参数比较复杂,为了有效评价储层含油性,求准含水饱和度参数,本文利用不同地层、不同岩性的低孔低渗储层砂岩进行岩电实验,根据实验结果阐述了岩电实验参数的应用意义和在实际生产中含水饱和度的确定方法。该确定方法解决了低孔低渗储层含水饱和度计算难的问题,在实际应用中取得了良好的应用效果。

Determination of Water Saturation in Reservoirs of Low Porosity and Permeability

Water saturation is an important parameter to evaluate the off-bearing property of a reservoir..In actual formation the rock-electrical pa- rameters are complicated.In order to evaluate the reservoir oil-bearing property effectively and get accurate water saturation,many rock-electricity experiments are carried out in different strata and sandstone reservoirs with low porosity and permeability of different lithology.According to the experimental result,the paper formulates the significance of the application of the rock-eletricity experimental parameters and the method to determine water saturation in actual production.This method can solve the problem of water saturation calcu- lation of reservoirs with low porosity and permeability.It has gained good application effect in practical situations.