摘要
对于径向流直线段没有出现的情形,半对数分析方法将无法使用,图版拟合法存在着拟合结果多解的危险,并且图版拟合的结果没有半对数分析法精度高。此文通过对双对数图中的拟压力和拟压力导数曲线进行分析,从中找出一些特征点和特征线,推出了计算储层参数(K,S,C)的新公式。通过实例,将本文的方法所得到的结果与试井软件解释的结果进行分析对比,表明此文的方法对未出现径向流的气井试井解释是适用的。
For the condition of the infinite acting line is not observed, the semilog analysis method will not be available, and the type-curve matching technique exist the risk of multiple solutions. Furthermore, the result of type-curve matching is not as accurate as sernilog analysis. Therefore, in this paper, it is shown how a log-log plot of pseudo-pressure and pseudo-pressure derivative versus time curve can be analyzed. Through finding some characteristic points and straight lines, the new formula to calculate the reservoir parameters （K, S and C） was deduced. According to the analysis of compare the results obtained from this paper with the well test software, the equations obtained in this paper are applicable to interpret the gas well without appearing radial flow.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2011年第5期562-566,共5页
Chinese Journal of Hydrodynamics
基金
教育部博士点基金(20105121110006)
国家973计划课题(2011CB201005)
关键词
气井
特征点和特征直线
拟压力曲线
拟压力导数曲线
试井解释
gas well
characteristic point and straight lines
pseudo-pressure curve
pseudo-pressure derivative curve
welltest interpretation
