黔西地区高煤阶煤岩吸附特征及控制因素研究  

Adsorption Characteristics and Its Influencing Factors of High Rank Coal in Western Guizhou

作　　者：金留青 霍梦颖 马平华[2] 朱明[2] 武宁[2] 何俊 邵先杰[2] 

机构地区：[1]贵州省天然气能源投资股份有限公司,贵阳550081 [2]燕山大学,河北秦皇岛066004

出　　处：《重庆科技学院学报（自然科学版）》2017年第5期1-6,共6页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家科技重大专项"煤层气藏储渗空间特征与渗流机理研究"(2011ZX05038-001);河北省自然科学基金资助项目"火烧煤层提高煤层气采收率机理及关键技术研究"(D2016203253)

摘　　要：煤岩的吸附能力决定了煤层气的储量丰度,也影响着煤层气井的产量,是煤层气评价最基本的重要参数。依据大量煤岩样品的实验结果和理论分析,研究了高煤阶煤岩的吸附能力、特征以及影响因素。黔西高煤阶煤岩的兰氏体积和兰氏压力偏低,层间差异大,低压阶段吸附量所占比例高。通过单因子分析法分析各参数对吸附能力的影响;通过灰色关联法分析,确定了各因素对煤岩吸附能力的影响程度。各因素影响关系的确定为煤层气评价参数的选择提供了理论依据。The adsorption ability of coal is the most basic and important parameter for coal-bed methane（CBM）evaluation,which decides the CBM reserves abundance,and also affects the production of CBM wells.On the basis of the experiment and theoretical analysis by a large number of coal samples,the paper studied the adsorption ability,the adsorption characteristics and its influencing factors of high rank coal.The study found that the Langmuir volume and Langmuir pressure of high rank coal in western Guizhou is low,the differences between coal layers is big,and the adsorption proportion at low pressure stage is high.Influence on adsorption capacity from different factors have been determined through the analysis method of single factor.Through the gray relational analysis method,it also determined the factors＇ impact degree on the absorption ability of the coal.Influence relations provides theory basis for the evaluation of CBM.

关 键 词：煤层气 高煤阶 吸附 兰氏体积 黔西地区 

分 类 号：TD712[矿业工程—矿井通风与安全]