一种新的压力求导方法──拉氏变换法  

New Pressure Derive Method-Laplace Transform Method

作　　者：雷霆[1] 夏位荣[1] 栗波 

机构地区：[1]江汉石油学院 [2]辽河油田欢喜岭采油厂

出　　处：《油气井测试》1997年第1期16-19,74,共5页Well Testing

摘　　要：典型曲线分析法是试井资料分析的主要方法之一，而压力导数曲线又是用以划分流动阶段、识别储层模型、判别边界效应的重要手段。但压力导数曲线很容易受到干扰而出现杂乱的跳动，用直接求二点间导数或最小二乘法作出的压力导数图存在一定的不足。本文提出用拉氏变换法作压力导数图，并与前者比较，表明用拉氏变换法其结果更令人满意。Type curve analysis is the main method in well testing analysis,pressure derivative curve is the significant' technology for dividing the flow period, recognizing the reservoir model and judging the boundary effect. But the pressure directive curve is easy to be disturbed, there are some shortcoming in calculating the pressure derivative by directly computing and using the least square method. In this paper we gave a new method by. using Laplace transform method, and the comparison with the other rnethod. It confirmed that the Laplace transform method is satisfy.

关 键 词：压力降落试井 压力恢复分析 拉普拉斯变换 典型曲线拟合 

分 类 号：O177.6[理学—数学]