水平井不稳定试井与产量递减分析新方法  

A new method for the transient well test of horizontal wells and the analysis of the production decline

作　　者：聂仁仕[1] 贾永禄[1] 朱水桥[2] 饶政[2] 张春光[2] 高银香[2] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]中国石油新疆油田分公司,新疆克拉玛依834000

出　　处：《石油学报》2012年第1期123-127,共5页Acta Petrolei Sinica

基　　金：国家重大科技专项(2008ZX05004);中央财政支持地方高校发展专项资金资助

摘　　要：针对水平井负表皮问题,在传统分析方法的基础上,建立了水平井不稳定试井与产量递减分析理论模型。利用拉普拉斯变换、分离变量及特征函数与特征值法等现代数学分析方法对模型进行了求解,获得了拉普拉斯空间中井底压力动态响应表达式和递减产量表达式。最后利用数值反演,得到了典型的试井分析和Blasingame产量递减分析样版曲线,并划分了流动阶段,分析了流动特征。此外,得到了受负表皮影响的样版曲线,样版曲线不再振荡,成功地解决了水平井负表皮问题。In order to solve the negative skin problem of horizontal wells,we established a theoretical model for the transient well test of horizontal wells and for the analysis of production decline based on traditional analysis methods.The model was solved with modern mathematical methods including the Laplace transformation,separation of variables,eigenvalue and eigenfunction.Expressions for a dynamic response to bottomhole pressure in the Laplace space and for production decline rates were obtained.Finally,type curves of typical well test and the Blasingame production decline rate analysis were programmed and plotted,and flow stages were divided so as to analyze characteristics of type curves.In addition,type curves affected by negative skin were especially plotted and they were no longer oscillatory,indicating a successful settlement of the negative problem of horizontal wells.

关 键 词：水平井 不稳定试井 产量递减分析 负表皮 样版曲线 

分 类 号：TE353[石油与天然气工程—油气田开发工程]