煤储层理论临界解吸压力与实际排采对比研究  

Comparative Study between Theoretical Critical Desorption Pressure and Actual Drainage and Mining State of Coal Reservoir

作　　者：张永生[1] 孙文卿[1] 高学通[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：《山西焦煤科技》2011年第1期4-7,共4页Shanxi Coking Coal Science & Technology

摘　　要：基于现有的临界解吸压力及井底压力的计算方法,对煤层气井在排采生产中存在的理论临界解吸压力与实际排采不吻合的现象,深入分析原因。分析认为,煤储层含气量实测误差以及混气液柱压力的计算是主要影响因素,减小测量误差和建立更精确的混气液柱压力计算模型值得研究,以便深入认识煤层气生产过程,掌握排采特征和建立合理的工作制度来指导煤层气资源合理开发。Based on the calculation methods of critical desorption pressure and bottom hole pressure, the state that the theoretical critical desorption pressure dont fit the actual drainage and mining of CBM well was further stud- ied. We concluded that the main reasons were measurement error of coal - bed gas content and calculation error of gas mixing liquid column. And reducing calculation errors and building exact calculation modal were well worth studying, for these may help us further realize the production characteristics of CBM well and establish reasonable working rules and direct rational exploitation of CBM.

关 键 词：储层压力 临界解吸压力 井底压力 混气液柱 

分 类 号：P618.11[天文地球—矿床学]