IGGCAS OpenIR  > 新生代地质与环境院重点实验室
Modeling hydrocarbon accumulation based on gas origin and source rock distribution in Paleozoic strata of the Ordos Basin, China
Liu, Dan1,2; Li, Jian3; Liu, Jia-qi1,2; Zhang, Lin4
2020-05-15
Source PublicationINTERNATIONAL JOURNAL OF COAL GEOLOGY
ISSN0166-5162
Volume225Pages:14
AbstractPaleozoic gases in the Ordos Basin, China, are produced from upper Paleozoic tight sandstones, Ordovician weathered-crust, and 'pre-salt' (beneath gypsum deposits) dolomite reservoirs. Their origins have been debated, particularly as to whether Carboniferous-Permian (C-P) or Ordovician source rocks contributed more gas to the lower Paleozoic gas reservoirs. The expanded exploration of lower Paleozoic gas to the eastern, western, northern, and southern regions of the basin has re-initiated the debates. In this study, geochemical characteristics of gas samples from newly drilled wells in different regions of Ordos Basin in combination with the source rock evaluation were used to determine the gas origin. The carbon and hydrogen isotope of alkane indicate that gas mixing occurred in both upper Paleozoic and Ordovician weathered-crust gases, and that TSR occurred in pre-salt gases. A modified delta C-13-1/C-n plot was suggested to be useful to determine the carbon isotopic patterns of gases generated from the different source rocks. The light hydrocarbon characteristic shows that oil-type gas mainly distributes in the eastern basin. A study of source-rock distributions also indicates that the most favorable Ordovician source rock is located in the eastern basin. Based on the distribution of C-P coal measures, limestones and lower Paleozoic carbonate source rock, a gas accumulation history was established. The results of this study provide applicable method for identifying gas origin in Ordos Basin. Moreover, the accumulation history proposed in this study is useful for further exploration of the lower Paleozoic gas in Ordos Basin.
KeywordOrdos Basin Paleozoic Natural gas Carbon isotope Coal-type gas Source rock
DOI10.1016/j.coal.2020.103486
Funding OrganizationNational Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program
WOS KeywordTHERMOCHEMICAL SULFATE REDUCTION ; EAST SICHUAN BASIN ; NATURAL-GAS ; GEOCHEMICAL CHARACTERISTICS ; LIGHT-HYDROCARBONS ; THERMOGENIC GAS ; GENETIC TYPES ; ALKANE GASES ; PETROLEUM ; METHANE
Language英语
Funding ProjectNational Natural Science Foundation for Young Scientists of China[41702161] ; China Geological Survey Program[DD20160170] ; China Geological Survey Program[DD20160203] ; China Geological Survey Program[DD20190090]
Funding OrganizationNational Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; National Natural Science Foundation for Young Scientists of China ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program ; China Geological Survey Program
WOS Research AreaEnergy & Fuels ; Geology
WOS SubjectEnergy & Fuels ; Geosciences, Multidisciplinary
WOS IDWOS:000536905200003
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/96674
Collection新生代地质与环境院重点实验室
Corresponding AuthorLi, Jian
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China
3.PetroChina Res Inst Petr Explorat & Dev, 20 Xueyuan Rd, Beijing 100083, Peoples R China
4.China Geol Survey, Il & Gas Survey, 267 Beisihuan Zhonglu Rd, Beijing 100083, Peoples R China
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Liu, Dan,Li, Jian,Liu, Jia-qi,et al. Modeling hydrocarbon accumulation based on gas origin and source rock distribution in Paleozoic strata of the Ordos Basin, China[J]. INTERNATIONAL JOURNAL OF COAL GEOLOGY,2020,225:14.
APA Liu, Dan,Li, Jian,Liu, Jia-qi,&Zhang, Lin.(2020).Modeling hydrocarbon accumulation based on gas origin and source rock distribution in Paleozoic strata of the Ordos Basin, China.INTERNATIONAL JOURNAL OF COAL GEOLOGY,225,14.
MLA Liu, Dan,et al."Modeling hydrocarbon accumulation based on gas origin and source rock distribution in Paleozoic strata of the Ordos Basin, China".INTERNATIONAL JOURNAL OF COAL GEOLOGY 225(2020):14.
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