石油学报 ›› 1995, Vol. 16 ›› Issue (1): 96-104.DOI: 10.7623/syxb199501013

• 油田开发 • 上一篇    下一篇

精确的拉普拉斯数值反演方法及其应用

何光渝, 王卫红   

  1. 西安石油学院
  • 收稿日期:1993-07-15 修回日期:1993-10-11 出版日期:1995-01-25 发布日期:2013-07-08
  • 作者简介:何光渝,1967年毕业于兰州大学.现任西安石油学院石油工程系采油教研室主任,副教授.通讯处:陕西省西安市陵园路.邮政编码:710061.

AN APPLICATION OF AN ACCURATE AND EFFICIENT NUMERICAL INVERSION OF THE LAPLACE TRANSFORM IN MODERN WELL-TESTING ANALYSIS

He Guangyu, Wang Weihong   

  1. Xi'an Petroleum Institute
  • Received:1993-07-15 Revised:1993-10-11 Online:1995-01-25 Published:2013-07-08

摘要: 介绍了一种拉普拉斯变换数值反演的新方法(Crump方法)以及它在油气井现代试井分析中的应用。在数值解例中,将Crump方法和精确解及Stehfest方法分别作了比较。Grump方法无论在计算精度、数值弥散还是在数值振荡上都有很大改进。用此方法绘制的典型曲线更精确。

关键词: 拉普拉斯变换, 数值分析, 反演试井分析

Abstract: A new numerical inversion of the Laplace transform(Crump's method) is presented.This method is applied in modern well testing analysis. Crump' s method, Stehfest'smethod and exact solution are compared in examples cited. The results show that Crump'smethod is more accurate and stable. The type-curves derived by this method are more exactthan those derived by Gringarten et al.

Key words: Laplace transform, numerical analysis, inversion, well test analysis