摘要
为研究我国不同煤化程度的贫煤特征和资源潜力,收集50个全国范围内贫煤的煤岩、工业分析、孔隙特征、等温吸附实验数据。研究结果表明:随着煤化程度的增加,贫煤挥发分产率、空气干燥基水分逐渐降低;贫煤孔容以大孔为主,孔容分布比较分散,比表面积以微孔比表面积为主;贫煤孔隙度随煤化程度增加逐渐增加;贫煤饱和吸附量随煤化程度逐渐增加,平均为34.84cm3/g-1。我国贫煤煤层气资源估算约1.29×1012 m3,资源量大,储层吸附性好,煤层气资源具有开发潜力。但当前贫煤煤层气并没有得到有效开发,对贫煤物性基础研究以及资源分布的梳理有助于贫煤煤层气的开发利用。
In order to study the characteristics and resource potential in different coalification degree of meagre coaU this paper collected 50 nationwide samples including coal petrography, industrial analysis, pore characteristics and isothermal adsorption experiment data. The results show that with the increase of the coalification degree, the volatile matter yield and air dry basis moisture content of meagre coal decrease gradually. There is mainly macropore in meagre coaU pore volume distribution is more dispersed ,specific surface area is mainly micropore. Porosity of meagre coal increases gradually with the increase of the coalification degree. The saturation absorptive capacity of meagre coal increasesgradually with the increase of the coalification degree, and the average is 34. 84 cm^3·g^-1. The estimation of meagre coal coalbed methane （CBM） resources in China is about 1. 29×10^12 m^3, its resources amount is big and the reservoir adsorption is good, which are very favorable for CBM exploration and development. But for now, CBM of meagre coal has not been exploited effectively, so the basic research of physical property and the carding of resource distribution will be conducive to the development and utilization of CBM in meagre coal.
出处
《中国科技论文》
CAS
北大核心
2016年第15期1679-1686,共8页
China Sciencepaper
基金
2014年度山西省煤基重点科技攻关项目(MQ2014-02)
山西省基础研究项目(2014012005)
关键词
煤层气地质
贫煤
煤岩组分
孔径结构
孔隙度
吸附性
CBM geology
meagre coal
coal and rock components
pore structure
porosity
adsorbability
