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Comparative Study of Hydrogen and Carbon Isotopic Composition of Gases Generated from the Pyrolysis of a Peat under Saltwater and Freshwater Conditions
Wu Yingzhong1,3; Duan Yi1,2,3; Zhao Yang4; Cao Xixi5; Ma Lanhua6; Qian Yaorong7; Li Zhongping1; Xing Lantian1
2018-10-01
发表期刊ACTA GEOLOGICA SINICA-ENGLISH EDITION
ISSN1000-9515
卷号92期号:5页码:1879-1887
摘要To understand the influence of the diagenetic water medium on the isotopic compositions of thermogenic coalbed gas, both hydrous and anhydrous closed-system pyrolyses were performed at temperatures of 250 degrees C to 650 degrees C on an herbaceous marsh peat. Compared to the results of anhydrous pyrolysis, the hydrocarbon gases generated from hydrous pyrolyses have very different hydrogen isotopic compositions. However, the carbon isotopic compositions of the hydrocarbon gases became only slightly heavier in hydrous pyrolysis, compared to that from anhydrous pyrolysis. With the progress of thermal evolution from peat to a more advanced thermal maturity of vitrinite reflectance values (R-o) of 5.5% during the pyrolysis, the difference in the average D value increased from 52 parts per thousand to 64 parts per thousand between the hydrous pyrolysis with saltwater and anhydrous pyrolysis and increased from 18 parts per thousand to 29 parts per thousand between the hydrous pyrolysis with freshwater and anhydrous pyrolysis, respectively. The difference in the average C-13 value was only 1 parts per thousand-2 parts per thousand between the hydrous and anhydrous pyrolysis. The relationships between the D values of the generated hydrocarbon gases and R-o values as well as among D values of the hydrocarbon gas species are established. The close relationships among these parameters suggest that the water medium had a significant effect on the hydrogen isotopic composition and a minimal effect on the carbon isotopic composition of the hydrocarbon gases. The results of these pyrolyses may provide information for the understanding of the genesis of coalbed gas from herbaceous marsh material with the participation of different diagenetic water media.
关键词simulation experiment gas product hydrogen and carbon isotope diagenetic water medium influencing factor Xinjiang
DOI10.1111/1755-6724.13682
资助者National Natural Science Foundation 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 ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
关键词[WOS]PETROLEUM FORMATION ; COALBED METHANE ; D/H ; GEOCHEMISTRY ; ACCUMULATION ; EXCHANGE ; KEROGEN ; BITUMEN ; ALKANES ; RATIOS
语种英语
资助项目National Natural Science Foundation of China[41772108] ; National Natural Science Foundation of China[41472121]
资助者National Natural Science Foundation 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 ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000448778800013
出版者WILEY
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/89147
专题兰州油气中心
通讯作者Duan Yi
作者单位1.Chinese Acad Sci, Northwest Res Inst Ecoenvironm & Resources, Key Lab Petr Resources Res, Key Lab Petr Resources Gansu Prov, Lanzhou 730000, Gansu, Peoples R China
2.Changan Univ, Sch Earth Sci & Resources, Xian 710054, Shaanxi, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Liaoning Shihua Univ, Coll Petr Engn, Fushun 113001, Liaoning, Peoples R China
5.Lanzhou Univ, Admiss Off, Lanzhou 730000, Gansu, Peoples R China
6.SSB, Earthquake Res Inst Lanzhou, Lanzhou 730000, Gansu, Peoples R China
7.US EPA, Analyt Chem Branch, Off Pesticide Programs, 701 Mapes Rd, Ft George G Meade, MD 20755 USA
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Wu Yingzhong,Duan Yi,Zhao Yang,et al. Comparative Study of Hydrogen and Carbon Isotopic Composition of Gases Generated from the Pyrolysis of a Peat under Saltwater and Freshwater Conditions[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2018,92(5):1879-1887.
APA Wu Yingzhong.,Duan Yi.,Zhao Yang.,Cao Xixi.,Ma Lanhua.,...&Xing Lantian.(2018).Comparative Study of Hydrogen and Carbon Isotopic Composition of Gases Generated from the Pyrolysis of a Peat under Saltwater and Freshwater Conditions.ACTA GEOLOGICA SINICA-ENGLISH EDITION,92(5),1879-1887.
MLA Wu Yingzhong,et al."Comparative Study of Hydrogen and Carbon Isotopic Composition of Gases Generated from the Pyrolysis of a Peat under Saltwater and Freshwater Conditions".ACTA GEOLOGICA SINICA-ENGLISH EDITION 92.5(2018):1879-1887.
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