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Organic matter pores structure and evolution in shales based on the he ion microscopy (HIM): A case study from the Triassic Yanchang, Lower Silurian Longmaxi and Lower Cambrian Niutitang shales in China

文献类型：期刊论文

作者Wang, Pengfei5; Zhang, Chen4; Li, Xin3; Zhang, Kun2; Yuan, Yuan1; Zang, Xiaopeng5; Cui, Wenjuan5; Liu, Sanyi5; Jiang, Zhenxue4
刊名JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
出版日期2020-12-01
卷号84页码:22
ISSN号1875-5100
关键词Yanchang shale Longmaxi shale Niutitang shale HIM Organic matter pores Evolution
DOI10.1016/j.jngse.2020.103682
英文摘要To illustrate organic matter (OM) pores structure and evolution in shales with different maturities, the Triassic Yanchang shale (0.5% < Vitrinite reflectance (R-o) < 1.2%) in the Ordos Basin, the Lower Silurian Longmaxi shale (2.0% < R-o < 2.8%) and the Lower Cambrian Niutitang shale (3.0% < R-o < 4.2%) in the Yangtze Platform have been selected in this study. OM pores were analyzed by helium ion microscopy (HIM). The results show that OM pores are mainly developed in pyrobitumen. A large number of OM pores were developed in pyrobitumen of the Longmaxi shale samples. However, no OM pores were basically found in solid kerogen. OM pores number and size in pyrobitumen of the Yanchang shale samples are much smaller than that in the Longmaxi shale samples. OM pores are all basically undeveloped in pyrobitumen of the Niutitang shale samples. The structure that small size OM pores nested in large size OM pores is favorable to gas enrichment and seepage. Thermal maturity has more huge impact on OM pores structure than TOC content in shale. Low thermal maturity (R-o < 1.5%) will lead to insufficient thermal evolution of OM, resulting in small size and quantity of OM pores in shale. Excessive thermal maturity that ranges from 3.0% to 4.0% will leads to the disappearance of OM pores in pyrobitumen. Appropriate thermal maturity that ranges from 1.5% to 3.0% ensures a large number of OM pores in shale.
资助项目Analysis of International Geological Survey[DD20190414] ; Shale Gas Basic Geological Survey Project in South China from China Geological Survey[12120114046701]
WOS研究方向Energy & Fuels ; Engineering
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000595279600001
资助机构Analysis of International Geological Survey ; Analysis of International Geological Survey ; Shale Gas Basic Geological Survey Project in South China from China Geological Survey ; Shale Gas Basic Geological Survey Project in South China from China Geological Survey ; Analysis of International Geological Survey ; Analysis of International Geological Survey ; Shale Gas Basic Geological Survey Project in South China from China Geological Survey ; Shale Gas Basic Geological Survey Project in South China from China Geological Survey ; Analysis of International Geological Survey ; Analysis of International Geological Survey ; Shale Gas Basic Geological Survey Project in South China from China Geological Survey ; Shale Gas Basic Geological Survey Project in South China from China Geological Survey ; Analysis of International Geological Survey ; Analysis of International Geological Survey ; Shale Gas Basic Geological Survey Project in South China from China Geological Survey ; Shale Gas Basic Geological Survey Project in South China from China Geological Survey
源URL[http://ir.iggcas.ac.cn/handle/132A11/98665]  
专题中国科学院地质与地球物理研究所
通讯作者Wang, Pengfei
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Southwest Petr Univ, Chengdu 610500, Peoples R China
3.China Natl Offshore Oil Corp, Res Inst, Beijing 100028, Peoples R China
4.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China
5.Geosci Documentat Ctr China Geol Survey, 29 Xueyuan Rd, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Pengfei,Zhang, Chen,Li, Xin,et al. Organic matter pores structure and evolution in shales based on the he ion microscopy (HIM): A case study from the Triassic Yanchang, Lower Silurian Longmaxi and Lower Cambrian Niutitang shales in China[J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,2020,84:22.
APA Wang, Pengfei.,Zhang, Chen.,Li, Xin.,Zhang, Kun.,Yuan, Yuan.,...&Jiang, Zhenxue.(2020).Organic matter pores structure and evolution in shales based on the he ion microscopy (HIM): A case study from the Triassic Yanchang, Lower Silurian Longmaxi and Lower Cambrian Niutitang shales in China.JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,84,22.
MLA Wang, Pengfei,et al."Organic matter pores structure and evolution in shales based on the he ion microscopy (HIM): A case study from the Triassic Yanchang, Lower Silurian Longmaxi and Lower Cambrian Niutitang shales in China".JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING 84(2020):22.

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来源：地质与地球物理研究所

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