中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 兰州油气中心
Pore characteristics differences between clay-rich and clay-poor shales of the Lower Cambrian Niutitang Formation in the Northern Guizhou area, and insights into shale gas storage mechanisms

文献类型：期刊论文

作者Wu, Chenjun1; Tuo, Jincai1; Zhang, Leifu2; Zhang, Mingfeng1; Li, Jing1; Liu, Yan1; Qian, Yu1
刊名INTERNATIONAL JOURNAL OF COAL GEOLOGY
出版日期2017-06-01
卷号178页码:13-25
关键词Niutitang Formation Organic-rich shales Clay content Biogenic quartz Pore characteristics
ISSN号0166-5162
DOI10.1016/j.coal.2017.04.009
文献子类Article
英文摘要To study organic matter and pore characteristics of the Lower Cambrian Niutitang organic-rich shales, 166 shale samples from the Niutitang Formation were collected from the studied well, drilled in Kaiyang county in the Northern Guizhou area, Upper Yangtze region. All of the 166 shale cores were analysed for total organic carbon (TOC), total sulfur (TS), and the stable carbon isotope of kerogen (delta C-13(org)). Shale samples with varying TOC values were chosen for mineral composition analysis, helium porosity measurement and low pressure nitrogen adsorption measurement. The Lower Cambrian Niutitang Formation features high organic matter content, type I oil-prone organic matter, ultra-thick organic-rich shales, and an abundance of brittle minerals exhibiting favourable characteristics for the Lower Cambrian shale gas exploration in the Upper Yangtze region. Helium porosity measurement and low pressure nitrogen adsorption measurements were performed on selected shale samples with varying TOC content in order to analyse and characterize pore characteristics. Significant differences in mineral composition and pore characteristics were found between clay-rich and clay-poor Niutitang shales. Quartz weakly correlated with TOC content in clay-rich shales, which contained minor biogenically contributed quartz and performed better in terms of reservoir properties than clay-poor shales, and exhibited higher porosity, maximum nitrogen quantity adsorbed, pore volume, and specific surface area. In clay rich shales, the maximum nitrogen quantity adsorbed, total pore volume, and specific surface area positively correlated with TOC content (R-2 = 0.77, 0.79, and 0.75, respectively). The pore volume of clay-rich shales was dominated by mesopores, and both micropore and mesopore volume of clay-rich shales correlated significantly with TOC content. In clay-poor shales, quartz positively correlated with TOC content, indicating biogenic contribution to quartz. Micropore volume and mesopore volume of clay-poor shales were weakly positively correlated with TOC content. Pore volume, especially mesopore volume, may be affected by the recrystallization of biogenic silica, exhibiting identical micropore volume with clay-rich shales but lower mesopore volume.
WOS关键词NORTHEASTERN BRITISH-COLUMBIA ; MISSISSIPPIAN BARNETT SHALE ; SOUTHERN SICHUAN BASIN ; UPPER YANGTZE PLATFORM ; FORT-WORTH BASIN ; ORGANIC-MATTER ; GEOCHEMICAL CHARACTERISTICS ; BLACK SHALES ; SOUTHWESTERN CHINA ; SEDIMENTARY BASIN
WOS研究方向Energy & Fuels ; Geology
语种英语
WOS记录号WOS:000403518600002
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China(41602151 ; National Programs for Fundamental Research and Development of China (973 Program)(2014CB239004 ; CAS 'Light of West China' Program ; 41672127) ; 2012CB214701) ; National Natural Science Foundation of China(41602151 ; National Programs for Fundamental Research and Development of China (973 Program)(2014CB239004 ; CAS 'Light of West China' Program ; 41672127) ; 2012CB214701) ; National Natural Science Foundation of China(41602151 ; National Programs for Fundamental Research and Development of China (973 Program)(2014CB239004 ; CAS 'Light of West China' Program ; 41672127) ; 2012CB214701) ; National Natural Science Foundation of China(41602151 ; National Programs for Fundamental Research and Development of China (973 Program)(2014CB239004 ; CAS 'Light of West China' Program ; 41672127) ; 2012CB214701)
源URL[http://ir.iggcas.ac.cn/handle/132A11/52010]  
专题地质与地球物理研究所_兰州油气中心
通讯作者Tuo, Jincai
作者单位1.Chinese Acad Sci, Key Lab Petr Resources Res, Lanzhou 730000, Peoples R China
2.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Chenjun,Tuo, Jincai,Zhang, Leifu,et al. Pore characteristics differences between clay-rich and clay-poor shales of the Lower Cambrian Niutitang Formation in the Northern Guizhou area, and insights into shale gas storage mechanisms[J]. INTERNATIONAL JOURNAL OF COAL GEOLOGY,2017,178:13-25.
APA Wu, Chenjun.,Tuo, Jincai.,Zhang, Leifu.,Zhang, Mingfeng.,Li, Jing.,...&Qian, Yu.(2017).Pore characteristics differences between clay-rich and clay-poor shales of the Lower Cambrian Niutitang Formation in the Northern Guizhou area, and insights into shale gas storage mechanisms.INTERNATIONAL JOURNAL OF COAL GEOLOGY,178,13-25.
MLA Wu, Chenjun,et al."Pore characteristics differences between clay-rich and clay-poor shales of the Lower Cambrian Niutitang Formation in the Northern Guizhou area, and insights into shale gas storage mechanisms".INTERNATIONAL JOURNAL OF COAL GEOLOGY 178(2017):13-25.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。