摘要
基于煤储层对甲烷吸附特征在煤层气勘探开发中的重要性,采用等温吸附试验,对高家庄区块高煤价煤储层吸附特征进行研究,并分析其控制因素。结果表明:高家庄区块主煤储层兰氏体积大于26cm3/g,兰氏压力中等,具有较强的煤层甲烷吸附和储集能力;其中,15#煤储层对甲烷的吸附能力要明显好于山西组3#煤储层,但吸附能力区域差异较大;煤阶和煤岩有机显微组分是研究区煤储层甲烷吸附特征的重要控制因素,水分和灰分在一定程度上降低了煤储层吸附能力。
The methane sorption characteristics of the coal bed is important for the exploration and developing of coalbed methane（CBM）,theretore the adsorption characteristics and influence factors of high-rank coal is conducted by the isothermal adsorption test in Gaojiazhuang area,Qinshui basin.The results show that the main coal reservoirs have strong capacity to adsorb and accumulate CBM in Gaojiazhuang area,with the Langmuir volume 26cm3/g and moderate langmuir pressure;between the the 3rd and 15th coal reservoirs,the latter has a better adsorption capacity and more different in the spatial distribution;the coal rank and maceral composition are controlling factors of adsorption capacity for CBM,and the moisture and ash content decrease the adsorb ability for CBM of reservoir to a certain degree.
出处
《河北工程大学学报（自然科学版）》
CAS
2010年第3期57-61,共5页
Journal of Hebei University of Engineering:Natural Science Edition
基金
河北省自然科学基金(D2009000832)
关键词
等温吸附
吸附特征
兰氏体积
兰氏压力
高家庄区块
沁水盆地
isothermal adsorption
adsorption characteristics
Langmuir volume
Langmuir pressure
Gaojiazhuang area
Qinshui Basin
