摘要
应用先进技术与方法,对取自该地区的典型二叠系岩芯样品,进行了系统的地球化学、矿物组成、孔隙度及孔隙结构等方面分析。结果表明,这套二叠系烃源岩孔隙发育,平均孔隙度可达5.37%;纳米级孔隙发育,并以微孔和介孔为主;泥页岩总有机碳含量(TOC)和黏土矿物含量是控制吸附能力和孔隙大小的关键因素。二叠系富有机质泥页岩孔隙度较高,发育大量的纳米级孔隙及具有较大的比表面积,为页岩气储存提供了良好条件。
Pore characteristics and their controlled factors of some lower Paleozoic shales from the Yangtze area were investigated in this paper using optical microscopy,scanning electron microscopy（SEM） and N2 gas adsorption method.The results show that different pore types are abundant in the samples,including pores in organic matter,solution pores,primary residual pores,iron pyrite inter-granular pores,and micro-fissure caused by clay minerals.The samples have pore specific surface area between 2.99-35.26 m2/g,pore volume between 0.012-0.096 cm3/g.The pore volume and pore specific surface area of the samples show some positive relationship with their TOC and clay mineral contents.They are major factors to control pore structures of shales.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2013年第5期787-793,共7页
Journal of China Coal Society
基金
国家重点基础研究发展计划(973)资助项目(2012CB214705)
国家科技重大专项资助项目(2011ZX05008-002-40)
