改进等时试井资料应用的新方法

A NEW METHOD FOR THE APPLICATION OF MODIFIED ISOCHRNOAL TESTING DATA

对于低渗透性气藏,改进等时试井是最常使用的方法。本文基于不稳定压降试井的理论,提供了一个预测绝对无阻流量(q_(AOF))和确定渗透率(K)、表皮系数(S)、非达西湍流系数(D)合理数值的简单技术方法。实际例子的应用表明,本文提供的方法是实用和有效的。

The modified isochronal test is a most commonly used method for low permeability gas reservoirs. In this paper, based on the transient pressure drawdown testing theory, a simple techniques to predict the absolute open flow potential (q_(AOF)), to determine reasonable values of permeability (K), Skin factor(S), and non-Darcy turbulent flow factor(D) is presented. An actual example is given indicating that method suggested in this paper is practical and effective.