双重孔隙度地层总导压能力系数和窜流系数的确定方法

A TECHNIQUE FOR THE DETERMINATION OF THE TOTAL TRANSMISSIBILITY AND CROSS FLOW COEFFICIENT IN DOUBLE POROSITY POROUS MEDIA

本文内容:(1)给出了恢复试井确定总导压能力系数θ方法,见方程(16)。其优点是不需要依赖压降试井数据,而直接利用恢复试井本身的资料即可;(2)给出了压降试井确定窜流系数λ的一个方法,见方程(22);(3)给出了恢复试井确定窜流系数λ的两个方法,见方程(24)和(36)。此二方法的优点在于:它们不需要压降试井数据,而只用恢复试井本身的资料,这就比已有的某些方法更加有用;(4)为检验方法进行了实例计算。

This paper gives following results. (1) A method is presented to deter-mine total pressure transmissibitity θby pressure build-up data from a well. Its advantage is that only pressure build-up data are required without pressure drawdown testing data, (2) A mehtod is presented to determine cross flow coefficient λfrom pressuredrawdown data; (3) Two methods are presented to determine the crossflow coefficient λfrom pressure build-up data. Their advantages are that only data of build-upwell testing is required without pressure drawdown testing data. Thus they are better than the methods now in use. practical examples are given to demonstrate these methods.