煤层气多分支水平井试井分析方法研究  

Technological Study on CBM Multilateral Horizontal Well Test and Analysis

作　　者：段宝江[1] 姚为英[1] 王文升[1] 尹彦君[1] 段永刚[2] 吴贵平[2] 赵敏[3] 陈岩[4] 

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6105003 [3]长江大学信息与数学学院,湖北荆州434023 [4]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37-41,3,共5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：多分支井开发煤层气是中国煤层气开采的重要手段。为研究煤层气多分支井的压力动态特征,根据煤层气多分支井的渗流特点,建立了渗流模型,结合单支水平井的压力分布叠加以及多分支井的离散化处理,通过数值反演及计算机编程得到多分支井试井理论曲线。根据曲线特征划分特征流动段,并进行了敏感性分析,这对煤层气多分支井试井解释和气藏动态分析具有重要的意义。Multilateral wells are an important means for the development of coalbed methane in China.In order to study the dynamic characteristics of pressure in CBM multilateral wells,according to the flow characteristics of multilateral wells,a flow model is established.Combined with a single branch horizontal wells' pressure distribution superimpose and discrete processing,numerical inversion and computer programming are used to obtain the theoretical curve of well test for the multilateral wells.According to the characteristics of curves,the flow regime is identified,and its sensitivity is analyzed.It is of great significance for CBM well test interpretation and reservoir dynamic analysis of the multilateral wells.

关 键 词：煤层气 多分支井 不稳定压力试井 

分 类 号：TE353.2[石油与天然气工程—油气田开发工程]