煤层气排采过程中煤储层压力传播规律研究  

Study on Reservoir Pressure Transmission Law During Gas Mining and Drainage Process of Coal Bed Methane Well

作　　者：杜严飞[1] 吴财芳[1] 邹明俊[1] 王聪[1] 姜伟[1] 雷波[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221008

出　　处：《煤炭工程》2011年第7期87-89,共3页Coal Engineering

基　　金：国家科技重大专项项目(2008ZX05034);国家重点基础研究(973)计划项目(2009CB219605);国家自然科基金重点项目(40730422);青年科学基金项目(40802032)

摘　　要：文章在分析煤层气排采机理的基础上,重点研究了煤储层压力在不同的煤储层边界条件和排采制度下的传播规律。研究表明:在不同的煤储层边界条件和排采制度下,煤储层压力传播形成的压降曲线各异;煤储层压力的传播过程可分为两个阶段,即压力传播到储层边界之前为第一阶段,传到储层边界之后为第二阶段。Base on the analysis on the mining and drainage mechanism of the coal bed methane,the paper had a study on the transmission law of the coal bed methane reservoir pressure under the boundary conditions of the coal bed methane reservoir and the mining and drainage system.The study showed that under the different boundary conditions of the coal bed methane reservoir and the mining and drainage system,the pressure drop curve formed by the reservoir pressure transmission would be different.The transmission process of the coal bed methane reservoir pressure could be divided into two stages.The firs stage would be before the pressure transmitted to the boundary of the reservoir and the second stage would be the pressure transmitted beyond the boundary of the reservoir.

关 键 词：煤层气 排采 储层压力 传播规律 压降曲线 

分 类 号：TE32[石油与天然气工程—油气田开发工程]