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Hydrocarbon Generation and Expulsion Histories of the Upper Permian Longtan Formation in the Eastern Sichuan Basin, Southwest China

[Image: see text] The Upper Permian Longtan Formation is the main source rock of the Lower Triassic Jialingjiang Formation in the Eastern Sichuan Basin, Southwest China. However, studies of its maturity evolution and oil generation and expulsion histories are lacking, which are not conducive to the...

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Autores principales: Zhang, Jiazhen, Zuo, Yinhui, Yang, Meihua, Huang, Wenming, Xu, Liang, Zheng, Ziyun, Zeng, Jiancheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10249116/
https://www.ncbi.nlm.nih.gov/pubmed/37305298
http://dx.doi.org/10.1021/acsomega.3c00048
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author Zhang, Jiazhen
Zuo, Yinhui
Yang, Meihua
Huang, Wenming
Xu, Liang
Zheng, Ziyun
Zeng, Jiancheng
author_facet Zhang, Jiazhen
Zuo, Yinhui
Yang, Meihua
Huang, Wenming
Xu, Liang
Zheng, Ziyun
Zeng, Jiancheng
author_sort Zhang, Jiazhen
collection PubMed
description [Image: see text] The Upper Permian Longtan Formation is the main source rock of the Lower Triassic Jialingjiang Formation in the Eastern Sichuan Basin, Southwest China. However, studies of its maturity evolution and oil generation and expulsion histories are lacking, which are not conducive to the accumulation dynamics of the Jialingjiang Formation in the Eastern Sichuan Basin. Based on the study of tectono-thermal history and geochemical parameter data of the source rock, this paper uses basin modeling technology to simulate the maturity evolution and hydrocarbon generation and expulsion histories of the Upper Permian Longtan Formation in the Eastern Sichuan Basin. The results show that the Longtan Formation source rock in the Eastern Sichuan Basin entered the oil generation threshold at the middle stage of the Early Jurassic and reached the high-maturity stage in the north and central regions at the late stage of the Early Jurassic, and the maturity did not increase after the late stage of the Middle Jurassic. The source rock had the characteristic of “one-stage oil generation and one-stage oil expulsion”; the corresponding period of high oil expulsion was 182–174 Ma (the late stage of the Early Jurassic), which was later than the formation time of the trap of the Jialingjiang Formation, possibly providing oil sources for the paleo-oil reservoirs of the Jialingjiang Formation. The results are of great significance to the gas accumulation process and exploration decision-making in the Eastern Sichuan Basin.
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spelling pubmed-102491162023-06-09 Hydrocarbon Generation and Expulsion Histories of the Upper Permian Longtan Formation in the Eastern Sichuan Basin, Southwest China Zhang, Jiazhen Zuo, Yinhui Yang, Meihua Huang, Wenming Xu, Liang Zheng, Ziyun Zeng, Jiancheng ACS Omega [Image: see text] The Upper Permian Longtan Formation is the main source rock of the Lower Triassic Jialingjiang Formation in the Eastern Sichuan Basin, Southwest China. However, studies of its maturity evolution and oil generation and expulsion histories are lacking, which are not conducive to the accumulation dynamics of the Jialingjiang Formation in the Eastern Sichuan Basin. Based on the study of tectono-thermal history and geochemical parameter data of the source rock, this paper uses basin modeling technology to simulate the maturity evolution and hydrocarbon generation and expulsion histories of the Upper Permian Longtan Formation in the Eastern Sichuan Basin. The results show that the Longtan Formation source rock in the Eastern Sichuan Basin entered the oil generation threshold at the middle stage of the Early Jurassic and reached the high-maturity stage in the north and central regions at the late stage of the Early Jurassic, and the maturity did not increase after the late stage of the Middle Jurassic. The source rock had the characteristic of “one-stage oil generation and one-stage oil expulsion”; the corresponding period of high oil expulsion was 182–174 Ma (the late stage of the Early Jurassic), which was later than the formation time of the trap of the Jialingjiang Formation, possibly providing oil sources for the paleo-oil reservoirs of the Jialingjiang Formation. The results are of great significance to the gas accumulation process and exploration decision-making in the Eastern Sichuan Basin. American Chemical Society 2023-05-23 /pmc/articles/PMC10249116/ /pubmed/37305298 http://dx.doi.org/10.1021/acsomega.3c00048 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Zhang, Jiazhen
Zuo, Yinhui
Yang, Meihua
Huang, Wenming
Xu, Liang
Zheng, Ziyun
Zeng, Jiancheng
Hydrocarbon Generation and Expulsion Histories of the Upper Permian Longtan Formation in the Eastern Sichuan Basin, Southwest China
title Hydrocarbon Generation and Expulsion Histories of the Upper Permian Longtan Formation in the Eastern Sichuan Basin, Southwest China
title_full Hydrocarbon Generation and Expulsion Histories of the Upper Permian Longtan Formation in the Eastern Sichuan Basin, Southwest China
title_fullStr Hydrocarbon Generation and Expulsion Histories of the Upper Permian Longtan Formation in the Eastern Sichuan Basin, Southwest China
title_full_unstemmed Hydrocarbon Generation and Expulsion Histories of the Upper Permian Longtan Formation in the Eastern Sichuan Basin, Southwest China
title_short Hydrocarbon Generation and Expulsion Histories of the Upper Permian Longtan Formation in the Eastern Sichuan Basin, Southwest China
title_sort hydrocarbon generation and expulsion histories of the upper permian longtan formation in the eastern sichuan basin, southwest china
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10249116/
https://www.ncbi.nlm.nih.gov/pubmed/37305298
http://dx.doi.org/10.1021/acsomega.3c00048
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