摘要
以川东-武陵山地区牛蹄塘组页岩为研究对象,运用核磁共振方法(NMR)表征页岩孔隙结构及其非均质性。T_2弛豫时间谱的双峰结构反映了页岩中孔径大小不同2种孔隙。提出运用核磁共振分形维数来表征页岩孔隙非均质性。min(D_(NMR))反映页岩微孔比表面积分形特征,max(D_(NMR))反映页岩中孔、大孔孔体积分形特征。
Took the shale of the Niutitang formation in eastern Sichuan-Wuling mountain area as the study object to characterize the shale pore structure and its heterogeneity by NMR. The bimodal structure of the shale T2 relaxation time spectrum reflects the two different kinds of pores. Using the fractal dimension of NMR to characterize shale pore heterogeneity. The min （DNMR） reflects shale microporosity specific surface area fractal characteristics, max （DNMR） reflects shale medium pore and large pore volume fractal characteristics.
作者
余旭东
康志宏
周磊
邓鑫
YU Xu-dong;KANG Zhi-hong;ZHOU Lei;DENG Xin(School of Energy Resources, China University of Geosciences（Beijing）, Beijing 100083, China;Key Laboratory for Shale Gas Exploration and Assessment, Ministry of Land and Resources, China University of Geosciences（Beijing）, Beijing 100083 , China)
出处
《煤炭技术》
CAS
2018年第5期129-131,共3页
Coal Technology
基金
国家自然科学基金项目(41272132)
中国地质科学院地质力学所地质调查项目([2015]01-04-08-001-01)
关键词
页岩
孔隙结构
核磁共振
分形维数
shale
pore structure
nuclear magnetic resonance（NMR）
fractal dimension
