水平井试井分析的特征值方法

Olaracteristic Value Method on Analysis for Horizontal Well Test.

针对水平井渗流机理复杂、不稳定试井资料难于分析的特点,在建立试井分析数学模型并获得解的基础上,作出了用于流动阶段识别的试井分析典型曲线,分析了水平井的渗流特征。利用各个流动阶段的特征,推导出求取油藏参数的表达式,用实例论证了本文方法的合理性。提出的水平井试井分析特征值方法简单实用,丰富和发展了水平井的试井分析理论和方法。

Aiming at the problems of the complicated seepage flow mechanism in horizontal well and the difficult for analyzing transient well test data, on the basis of establishing its mathematical model and getting its solution, the paper presents the typical well test curve used to identify each flow stage 、 analyzes seepage flow character, gives out the expression of reservoir parameter by using the characters of each flow stage and demonstrates the rationality of this method. The characteristic value method on analysis for horizontal well test is simple and useful which enriches and develops the theory and method of horizontal well test.