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Geochemical and Geological Characterization of Marine-Continental Transitional Shale: A Case Study in the Ordos Basin, NW China

文献类型：期刊论文

作者Wei, Zhifu2; Wang, Gen2; Wang, Yongli1,4; Ma, Xueyun2,3; Zhang, Ting2,3; He, Wei2,3; Yu, Xiaoli2,3
刊名ACTA GEOLOGICA SINICA-ENGLISH EDITION
出版日期2020-06-01
卷号94期号:3页码:809-821
关键词marine-continental transitional shales desorbed gas pore structure FE-SEM Ordos Basin
ISSN号1000-9515
DOI10.1111/1755-6724.13888
英文摘要The organic-rich shale of the Shanxi and Taiyuan Formation of the Lower Permian deposited in a marine-continental transitional environment are well developed in the Ordos Basin, NW China, which is considered to contain a large amount of shale hydrocarbon resources. This study takes the Lower Permian Shanxi and Taiyuan shale collected from well SL(#)in the Ordos Basin, NW China as an example to characterize the transitional shale reservoir. Based on organic geochemistry data, X-ray diffraction (XRD) analysis, field-emission scanning electron microscopy (FE-SEM) observations, the desorbed gas contents of this transitional shale were systematically studied and the shale gas potential was investigated. The results indicate that the Lower Permian Shanxi and Taiyuan shale has a relatively high total organic carbon (TOC) (average TOC of 4.9%) and contains type III kerogen with a high mature to over mature status. XRD analyses show that an important characteristic of the shale is that clay and brittle minerals of detrital origin comprise the major mineral composition of the marine-continental transitional shale samples, while the percentages of carbonate minerals, pyrite and siderite are relatively small. FE-SEM observations reveal that the mineral matrix pores are the most abundant in the Lower Permian shale samples, while organic matter (OM) pores are rarely developed. Experimental analysis suggests that the mineral compositions mainly govern the macropore development in the marine-continental transitional shale, and mineral matrix pores and microfractures are considered to provide space for gas storage and migration. In addition, the desorption experiments demonstrated that the marine-continental transitional shale in the Ordos Basin has a significantly potential for shale gas exploration, ranging from 0.53 to 2.86 m(3)/t with an average value of 1.25m(3)/t, which is in close proximity to those of terrestrial shale (1.29 m(3)/t) and marine shale (1.28 m(3)/t). In summary, these results demonstrated that the Lower Permian marine-continental transitional shale in the Ordos Basin has a significantly potential for shale gas exploration.
WOS关键词NORTHEASTERN BRITISH-COLUMBIA ; MISSISSIPPIAN BARNETT SHALE ; UPPER YANGTZE PLATFORM ; FORT-WORTH BASIN ; TRIASSIC YANCHANG FORMATION ; NORTH-CENTRAL TEXAS ; PORE STRUCTURE ; ORGANIC-MATTER ; SICHUAN BASIN ; GAS SHALES
资助项目Chinese Academy of Sciences Key Project[XDB10030404] ; National key R&D Program of China[2017YFA0604803] ; National Natural Science Foundation of China[41831176] ; National Natural Science Foundation of China[41572350] ; National Natural Science Foundation of China[41503049] ; Key Laboratory Project of Gansu[1309RTSA041]
WOS研究方向Geology
语种英语
WOS记录号WOS:000544351300022
出版者WILEY
资助机构Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; National key R&D Program of China ; National key R&D Program of China ; National key R&D Program of China ; National key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory Project of Gansu ; Key Laboratory Project of Gansu ; Key Laboratory Project of Gansu ; Key Laboratory Project of Gansu ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; National key R&D Program of China ; National key R&D Program of China ; National key R&D Program of China ; National key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory Project of Gansu ; Key Laboratory Project of Gansu ; Key Laboratory Project of Gansu ; Key Laboratory Project of Gansu ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; National key R&D Program of China ; National key R&D Program of China ; National key R&D Program of China ; National key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory Project of Gansu ; Key Laboratory Project of Gansu ; Key Laboratory Project of Gansu ; Key Laboratory Project of Gansu ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; National key R&D Program of China ; National key R&D Program of China ; National key R&D Program of China ; National key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Laboratory Project of Gansu ; Key Laboratory Project of Gansu ; Key Laboratory Project of Gansu ; Key Laboratory Project of Gansu
源URL[http://ir.iggcas.ac.cn/handle/132A11/97114]  
专题地质与地球物理研究所_兰州油气中心
地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Wang, Yongli
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Petr Resources Res, Lanzhou 730000, Gansu, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Wei, Zhifu,Wang, Gen,Wang, Yongli,et al. Geochemical and Geological Characterization of Marine-Continental Transitional Shale: A Case Study in the Ordos Basin, NW China[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2020,94(3):809-821.
APA Wei, Zhifu.,Wang, Gen.,Wang, Yongli.,Ma, Xueyun.,Zhang, Ting.,...&Yu, Xiaoli.(2020).Geochemical and Geological Characterization of Marine-Continental Transitional Shale: A Case Study in the Ordos Basin, NW China.ACTA GEOLOGICA SINICA-ENGLISH EDITION,94(3),809-821.
MLA Wei, Zhifu,et al."Geochemical and Geological Characterization of Marine-Continental Transitional Shale: A Case Study in the Ordos Basin, NW China".ACTA GEOLOGICA SINICA-ENGLISH EDITION 94.3(2020):809-821.

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来源：地质与地球物理研究所

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