摘要
在利用低温氮吸附法测试鄂尔多斯盆地煤储层孔隙分布的基础上 ,计算了煤样的孔容及比表面分维数 ,并分析了煤储层对甲烷的吸附能力与孔隙分维之间的关系。研究表明随着比表面分维数的增加 ,煤储层兰氏体积减小 ,而兰氏压力增加 ,随着孔容分维数的增加兰氏体积减小。
Based on testing pore distribution of coal reservoirs by means of cryogenic nitrogen isothermal adsorption,the pore volume and the specific surface fractal dimension of the samples are calculated,and the relations between coal reservoir adsorptive capacity to methane and the pore fractal dimension are analyzed. The study indicates that with the Langmuir volume of coal reservoirs increases and the Langmuir pressure decreases,the specific surface fractal dimension increase.The Langmuir volume of coal reservoirs reduces as pore volume fractal dimension increases.
出处
《煤炭技术》
CAS
2004年第7期1-3,共3页
Coal Technology
基金
安徽省教育厅自然科学基金 (2 0 0 2kj2 6 3)
安徽理工大学博士基金
关键词
煤储层
等温吸附
孔隙
比表面
分形维数
coal reservoir
l isotherm adsorption
porosity
fractal dimension
