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Geochemistry and shale gas potential of the lower Permian marine-continental transitional shales in the Eastern Ordos Basin

文献类型：期刊论文

作者Wei, Jingyi1,4; Wang, Yongli1,3; Wang, Gen2; Wei, Zhifu2; He, Wei2
刊名ENERGY EXPLORATION & EXPLOITATION
出版日期2021-05-01
卷号39期号:3页码:738-760
关键词Marine-continental transitional shale Shanxi-Taiyuan formation desorbed gas content physical properties of reservoir Ordos Basin
ISSN号0144-5987
DOI10.1177/0144598720979242
英文摘要Marine-continental transitional strata were widely developed in the Ordos Basin in Upper Carboniferous - Lower Permian. The Taiyuan - Shanxi Formation possesses promising shale gas exploration layers. Shale samples from two drilling wells of Shanxi-Taiyuan Formation in Shilou and Xixian, Ordos Basin, were investigated to study their carbon-sulfur contents and distribution characteristics of organic components using carbon/sulfur analyzer and gas chromatography-mass spectroscopy. Using results of total organic carbon analyses, Rock-Eval pyrolysis, X-ray diffraction analysis, shale gas desorption experiments, and other relevant experimental data, the shale samples were comprehensively analyzed. The exploitability of the shale in the study area was evaluated. The Shanxi-Taiyuan Shale in the Shilou and Xixian areas was characterized by high total organic carbon contents of 7.1% and 2.1% and high T-max values of 499 and 505 degrees C, respectively. The organic matter of the shale is types II2 and III. Moreover, biomarker parameters including n-alkanes, P-aq, P-wax, average carbon chain length, and the ternary diagram of C-27-C-28-C-29 steranes show the organic matter constituted terrestrial higher plants and aquatic low biological algae. Multiple n-alkane parameters show the organic matter input in the Shilou area is mainly derived from terrestrial higher plants. The Pr/Ph value and trace element indicators show the deposition environment is dominated by weak oxidation-reduction conditions. A shale gas desorption experiment shows the average desorbed gas contents of the shale samples in the Shilou and Xixian areas were 1.79 and 0.37 m(3)/t, respectively. The organic matter content determined the differences in shale gas properties between the two areas in Ordos Basin. The composition and content of inorganic minerals affect the reservoir physical properties. According to the analyses, the shale in the Shilou area has good shale gas reservoir characteristics in terms of desorbed gas content and the above-mentioned geochemical parameters. Furthermore, the Shanxi shale has good potential for shale gas industrial exploitation.
WOS关键词SICHUAN BASIN ; NATURAL-GAS ; SHANXI FORMATION ; CARBON ISOTOPES ; LONGMAXI SHALE ; DESORPTION GAS ; ORIGIN ; SEDIMENTARY ; FIELD ; INDICATORS
资助项目National Natural Science Foundation of China[41831176] ; National Natural Science Foundation of China[41902028] ; National Natural Science Foundation of China[41972030] ; National Key R&D Program of China[2017YFA0604803] ; Chinese Academy of Sciences Key Project[XDB26020302] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program[2019QZKK0707] ; CAS "Light of West China" Program
WOS研究方向Energy & Fuels
语种英语
WOS记录号WOS:000642587000003
出版者SAGE PUBLICATIONS INC
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Chinese Academy of Sciences Key Project ; Chinese Academy of Sciences Key Project ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ; CAS "Light of West China" Program ; CAS "Light of West China" Program
源URL[http://ir.iggcas.ac.cn/handle/132A11/101166]  
专题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
地质与地球物理研究所_兰州油气中心
通讯作者Wang, Yongli; Wang, Gen
作者单位1.Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Inst Geol & Geophys, Beijing, Peoples R China
2.Chinese Acad Sci, Gansu Prov Northwest Inst Ecoenvironm & Resources, Key Lab Petr Resources, Lanzhou, Peoples R China
3.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Wei, Jingyi,Wang, Yongli,Wang, Gen,et al. Geochemistry and shale gas potential of the lower Permian marine-continental transitional shales in the Eastern Ordos Basin[J]. ENERGY EXPLORATION & EXPLOITATION,2021,39(3):738-760.
APA Wei, Jingyi,Wang, Yongli,Wang, Gen,Wei, Zhifu,&He, Wei.(2021).Geochemistry and shale gas potential of the lower Permian marine-continental transitional shales in the Eastern Ordos Basin.ENERGY EXPLORATION & EXPLOITATION,39(3),738-760.
MLA Wei, Jingyi,et al."Geochemistry and shale gas potential of the lower Permian marine-continental transitional shales in the Eastern Ordos Basin".ENERGY EXPLORATION & EXPLOITATION 39.3(2021):738-760.

入库方式： OAI收割

来源：地质与地球物理研究所

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