检验相对渗透率曲线的两种方法

Two Techniques for Determining Relative Permeability Curves

从贝克莱-列维列特(Bucklev-Leverett)水驱油基本原理出发所推导出的两个基本公式,可用于检验由驱替实验资料计算所得的相对渗透率曲线是否真实地反映实验过程,从而得到了两种检验方法。用这些方法对4块岩样的实验资料所计算的相对渗透率曲线分别进行了检验,表明其中两块岩样的相对渗透率曲线真实地反映了实验结果,而另两块岩样的相对渗透率曲线与实验结果有较大误差,所得的检验方法简便、准确。

On the basis of Buckley-Leverett's principle on displacement of oil with water, two basic formulae are derived for checking whether relative permeability curves from displacement experiment reflect the experiment process. Two techniques of determination thus obtained are described in detail. Using the techniques, the relative permeability curves calculated for four samples are compared with measured curves separately. As a result, the relative permeabilities calculated for two samples agree with those from the experiment. while for other two samples do not. Therefore the techniques proposed in this paper are simple, reasonable, and accurate.