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光顺样条滤波在试井压力数据预处理中的应用

石油钻采工艺

2002年 24卷第1期

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Title

SMOOTH SPLINE FILTER FOR PRE-PROCESSING WELL TEST PRESSURE DATA

作者

孙贺东钱换群王跃社周芳德高承泰

Authors

Sun Hedong Qian Huanqun Wang Yueshe Zhou Fangde Gao Chengtai

单位

西安交通大学, 陕西西安 710049 西安石油学院, 陕西西安 710065

摘要

提出了用来处理含有噪音的测试压力数据的光顺样条滤波算法。数据处理后可以得到连续、光滑的压力导数,然后用典型曲线拟合方法进行试井分析。该方法简单易用,计算精度高。实例证明该方法是有效的,计算结果是可信的。

Abstract

An algorithm called smooth spline filter is presented to pre-processing a set of measured pressure data. It can be obtained smooth, continuous pressure derivative functions from processed well-test data. It can be used for type curve matching. This method reduces computing complexity and promotes identification efficiency. From experience with thousands of well tests, we have chosen several examples to illustrate the need for pre-processing the data. The examples show that smooth spline filter method is effective and practical.

关键词：

样条函数; 顺样条滤波; 试井分析; 预处理; 压力导数;

Keywords:

spline function; smooth spline filter; well test analysis; pre-processing; pressure derivative;

基金项目

DOI

10.3969/j.issn.1000-7393.2002.01.014