低渗气田修正等时试井分析的改进方法  

Improvement of Modified Isochronal Test Methods for Low Permeability Gas Field

作　　者：马强 

机构地区：[1]华北分公司工程技术处,河南郑州450006

出　　处：《油气井测试》2011年第5期24-26,29,共4页Well Testing

摘　　要：针对大牛地气田部分气井修正等时试井分析时二项式方程曲线斜率为负值,指数式方程曲线n值大于1的不合理现象,采用叠加原理进行公式推导,提出了新的分析解释方法,较有效地解决了二项式方程曲线反向问题,并详细分析了产生这一现象的原因。同时,由于误差的减小,对非曲线反向的修正等时试井数据也是一种提高精度的分析方法。应用Pansystem3.1试井分析软件模拟了大量数据进行验算并通过实际数据检验,获得满意效果,具有推广应用价值。Some one-point method experience equations are regressed from modified isochronal test data,so it is very important.Irrational phenomenal of negative slope of binomial equation curve and n>1 of exponential equation curve is occurred in some gas well data of modified isochronal test in Daniudi gas field.New analysis method is adduced with superposition principle,which can be solved the phenomenal of reverse of binomial equation curve.And this article analyzed detailed the reasons.This method can also improve the accurate of data analysis for normal modified isochronal test data.Pansystem3.1 software is used to simulate a large data and the method is checked with actual data.The good effect is obtained and this method can be used widely.

关 键 词：低渗气层 修正等时试井 曲线反向 新方法 大牛地气田 

分 类 号：TE353[石油与天然气工程—油气田开发工程]