作　　者： ; ; ; ;

机构地区： 中国科学技术大学工程科学学院近代力学系

出　　处： 《实验力学》 2007年第1期69-74,共6页

摘　　要： 本文介绍了在真实油井中使用阵列压力计测量油藏薄层垂向渗透率的实验方法。通过注水-停注并多次重复此过程使地层产生压差,并在井中不同深度放置压力计接收压力信号。为分析压力的变化,本文从渗流力学基本方程出发,对其无量纲化并采用Laplace变换及数值反变换技术,得到考虑垂向渗透率的地层压力分布表达式,利用这一表达式,对测试的压力资料进行解释。最后根据非线性回归理论对其中的4只压力计的压力资料进行分析,得到了各层垂向渗透率。 A test method for measuring vertical permeability of thin layered reservoir is introduced in this paper. Water is injected into formation first and then the injection is stopped. The above procedure is repeated and the pressure difference is produced. Pressure gauges are placed at different depth in the well to record the signal of the pressure change. In order to analyze the variation of pressure, the expression of the distribution of formation pressure considering vertical permeability is derived from the dimensionless basic equations of fluid mechanics in porous media with Laplace transformation and its numerical inversion. With this expression, the transient pressure is interpreted. Finally according to theory of nonlinear regression, vertical permeability of different layers can be obtained by analysis of transient pressure recorded by four pressure gauges.

关 键 词： 垂向渗透率 阵列压力计 曲线拟合 压力解释

领　　域： [石油与天然气工程]