煤层气变井储试井分析及应用  

Research on CBM Well Test Analysis with Changing Wellbore Storage and Its Application

作　　者：任宜伟[1] 王文升[1] 姜康[1] 冯毅[1] 段永刚[2] 吴贵平[2] 陈岩[3] 

机构地区：[1]中海油能源发展股份有限公司工程技术分公司非常规技术研究院,天津300457 [2]油气藏地质及开发工程国家重点实验室(西南石油大学),四川成都610503 [3]油气资源与勘探技术教育部重点实验室(长江大学),湖北武汉430100

出　　处：《长江大学学报（自科版）（上旬）》2016年第4期33-36,3,共4页JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG

基　　金：中海油能源发展重大专项(HFXMLZ-CJFZ1307)

摘　　要：变井储存效应已被广泛地考虑到常规油气试井分析,但煤层气实际测试资料的变井筒储存效应的复杂性以及对变井储试井和煤层气渗流理论的认识不足使得煤层气试井分析结果不可靠。通过系统研究煤层气井的变井储模型分析不稳定压力响应特征,并结合实际井的应用,通过综合应用双对数、半对数和压力历史拟合,验证了变井储的煤层气试井分析的实际应用价值:煤层气在排水采气和气液两相流试井时需要考虑相重分布的变井储影响。该研究对煤层气试井和煤层气开发有着重要的指导性意义。Changing well storage effect has been widely used for conventional oil and gas well test and analysis.Due to the complexity of changing wellbore storage effect in CBM field test data,and lack of understanding the theory of changing wellbore storage and CBM percolation,the test analysis results are not reliable.This paper studies on CBM changing wellbore storage model and analyzes the transient pressure response characteristics.Combined with application of the field well,through the integrated application of log-log,semi-log and pressure history fittings,the actual value of variable storage wells CBM well test analysis is verified.The well test in drainage and gas recovery and two-phase flow of CBM needs to consider the influence of distribution of changing well storage.It is pof great significance for CBM well test analysis and development.

关 键 词：煤层气 变井储 试井分析 应用 曲线拟合 

分 类 号：TE353.2[石油与天然气工程—油气田开发工程]