Carbon isotope and origin of the hydrocarbon gases in the Junggar Basin, China

The genetic type, source and distribution of hydrocarbon gases in the Junggar Basin were clarified through the carbon isotope analysis. Mature to post mature oil-type gas, mature to post mature coal-type gas, transition gas and biogas are identified in the Junggar Basin. Partly reversed order of car...

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Main Authors:	Lixin Pei, Wenzhe Gang, Chuanzhen Zhu, Yazhou Liu, Wenjun He, Yan Dong, Baoli Xiang
Format:	Article
Language:	English
Published:	Elsevier 2018-10-01
Series:	Journal of Natural Gas Geoscience
Online Access:	http://www.sciencedirect.com/science/article/pii/S2468256X18300701

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spelling	doaj-6e8c6978d61045ddaa9333b8e27c5fcd2020-11-25T02:09:37ZengElsevierJournal of Natural Gas Geoscience2468-256X2018-10-0135253261Carbon isotope and origin of the hydrocarbon gases in the Junggar Basin, ChinaLixin Pei0Wenzhe Gang1Chuanzhen Zhu2Yazhou Liu3Wenjun He4Yan Dong5Baoli Xiang6Geosciences, China University of Petroleum, Beijing, 102249, China; State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing, 102249, China; Corresponding author. Geosciences, China University of Petroleum, Beijing, 102249, China.State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing, 102249, ChinaState Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing, 102249, ChinaState Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing, 102249, ChinaResearch Institute of Petroleum Exploration and Development, Xinjiang Oilfield Company, Karamay, 834000, ChinaResearch Institute of Petroleum Exploration and Development, Xinjiang Oilfield Company, Karamay, 834000, ChinaResearch Institute of Experiment and Detection, Xinjiang Oilfield Company, Karamay, 834000, ChinaThe genetic type, source and distribution of hydrocarbon gases in the Junggar Basin were clarified through the carbon isotope analysis. Mature to post mature oil-type gas, mature to post mature coal-type gas, transition gas and biogas are identified in the Junggar Basin. Partly reversed order of carbon isotope of hydrocarbon gases in the Junggar Basin are attributed to one or several of the following reasons: mixing of oil-type and coal-type gases, mixing of coal-type gases of different source, mixing of coal-type gases of varied maturity, and microbial action. Three types of coal-type gases in the Junggar Basin are identified. The first type of coal-type gases characterized with high δ13C values of heavy hydrocarbon gases (δ13C2>−26.0‰) are the mature to high mature gases that are generated from Jurassic source rocks. The second type of coal-type gases characterized with low δ13C values of heavy hydrocarbon gases (δ13C2<−26.0‰) and wide maturity range, are generated from one or several source rocks in the Jurassic and the Wuerhe and Jiamuhe Formations of Permian. The third type of coal-type gases characterized with a wide δ13C value of heavy hydrocarbon gases and the high-post maturity are generated from the Carboniferous source rocks. Keywords: Carbon isotope, Hydrocarbon gas, Gas-source correlation, Junggar Basinhttp://www.sciencedirect.com/science/article/pii/S2468256X18300701
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Lixin Pei Wenzhe Gang Chuanzhen Zhu Yazhou Liu Wenjun He Yan Dong Baoli Xiang
spellingShingle	Lixin Pei Wenzhe Gang Chuanzhen Zhu Yazhou Liu Wenjun He Yan Dong Baoli Xiang Carbon isotope and origin of the hydrocarbon gases in the Junggar Basin, China Journal of Natural Gas Geoscience
author_facet	Lixin Pei Wenzhe Gang Chuanzhen Zhu Yazhou Liu Wenjun He Yan Dong Baoli Xiang
author_sort	Lixin Pei
title	Carbon isotope and origin of the hydrocarbon gases in the Junggar Basin, China
title_short	Carbon isotope and origin of the hydrocarbon gases in the Junggar Basin, China
title_full	Carbon isotope and origin of the hydrocarbon gases in the Junggar Basin, China
title_fullStr	Carbon isotope and origin of the hydrocarbon gases in the Junggar Basin, China
title_full_unstemmed	Carbon isotope and origin of the hydrocarbon gases in the Junggar Basin, China
title_sort	carbon isotope and origin of the hydrocarbon gases in the junggar basin, china
publisher	Elsevier
series	Journal of Natural Gas Geoscience
issn	2468-256X
publishDate	2018-10-01
description	The genetic type, source and distribution of hydrocarbon gases in the Junggar Basin were clarified through the carbon isotope analysis. Mature to post mature oil-type gas, mature to post mature coal-type gas, transition gas and biogas are identified in the Junggar Basin. Partly reversed order of carbon isotope of hydrocarbon gases in the Junggar Basin are attributed to one or several of the following reasons: mixing of oil-type and coal-type gases, mixing of coal-type gases of different source, mixing of coal-type gases of varied maturity, and microbial action. Three types of coal-type gases in the Junggar Basin are identified. The first type of coal-type gases characterized with high δ13C values of heavy hydrocarbon gases (δ13C2>−26.0‰) are the mature to high mature gases that are generated from Jurassic source rocks. The second type of coal-type gases characterized with low δ13C values of heavy hydrocarbon gases (δ13C2<−26.0‰) and wide maturity range, are generated from one or several source rocks in the Jurassic and the Wuerhe and Jiamuhe Formations of Permian. The third type of coal-type gases characterized with a wide δ13C value of heavy hydrocarbon gases and the high-post maturity are generated from the Carboniferous source rocks. Keywords: Carbon isotope, Hydrocarbon gas, Gas-source correlation, Junggar Basin
url	http://www.sciencedirect.com/science/article/pii/S2468256X18300701
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Carbon isotope and origin of the hydrocarbon gases in the Junggar Basin, China

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