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实验研究和现场实践表明 ,流体渗流的非线性和流态的多变性是复杂介质储层中的主要特征。根据实验渗流曲线的非线性特征 ,并结合微分原理 ,提出了一种广义的渗流描述法。文中详细地介绍了该方法的原理和一般步骤 ,以及使用过程中应当注意的问题。该方法不但可以描述流体渗流的非线性 ,而且还能方便地确定出流体在任一流速或者任一压力梯度下的渗流方程 ,从而可以有效地描述渗流过程中流体流态的多变性。
Experimental studies and field experiments show that fluid seepage non-linearity and fluid state variability are the main characteristics of complex media reservoirs. According to the nonlinear characteristics of the experimental seepage curve, combined with the differential principle, a generalized seepage description method is proposed. The paper describes in detail the principle of the method and the general steps, as well as the use of the process should pay attention to the problem. This method can not only describe the nonlinearity of fluid seepage, but also easily determine the seepage equation of the fluid at any flow rate or pressure gradient, which can effectively describe the variability of fluid flow during seepage.