气候变化领域集成服务门户(CCPortal): Charging of Carboniferous volcanic reservoirs in the eastern Chepaizi uplift, Junggar Basin (northwestern China) constrained by oil geochemistry and fluid inclusion

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DOI	10.1306/12171818041
	Charging of Carboniferous volcanic reservoirs in the eastern Chepaizi uplift, Junggar Basin (northwestern China) constrained by oil geochemistry and fluid inclusion
	Chang X.; Wang Y.; Shi B.; Xu Y.
发表日期	2019
ISSN	0149-1423
卷号	103 期号:7
英文摘要	Substantial amounts of petroleum were recently discovered in the Carboniferous andesite, tuff, breccia, and basalt reservoirs of the Chepaizi uplift in the western Junggar Basin. However, the charging history of the Carboniferous petroleum reservoir is poorly understood. Oil-oil correlation studies indicate that all of the oils were mainly derived from the middle Permian Wuerhe Formation source rocks, possibly mixed with a small contribution from Carboniferous Baogutu Formation source rocks in the neighboring Changji sag. Based on the petrographic and microthermometry of fluid inclusions, two hydrocarbon charging episodes are defined; these episodes were characterized by a low-peak-range homogenization temperature (Th) distribution (80°C-90°C) and high salinity (13.22-13.42 wt. % NaCl) and a high-peak-range Th distribution (120°C-130°C) and low salinity (4.89-11.72 wt. % NaCl), respectively. Through one-dimensional basin modeling and pressure-volume-temperature-composition simulation, the burial-thermal histories for wells P61, P66, P668, and P663 were reconstructed, and their trapping temperatures of the hydrocarbon inclusions were calculated to be higher than their corresponding highest paleotemperature (i.e., 56.8°C, 53.7°C, 60.9°C, and 58.1°C, respectively), implying fast hydrocarbon charging processes promoted by deep hydrothermal fluids. Associated with the hydrocarbon generation history, sealing process of the Hongche fault, and regional tectonic evolution, these two hydrocarbon charging events were deduced as the adjustments of oils previously accumulated along the Hongche fault zone, because of the tectonic extension in the Paleogene and regional tilting in the Neogene, respectively. The general direction of oil charging was traced from south to north and from east to west, as indicated by the molecular parameters of nitrogen-bearing compounds andC20 +C21 triaromatic steroids/C20 + C21 + C26-C28 triaromatic steroids (TA(I)/TA(I+II)), which roughly coincided with the active fracturing. © 2019. The American Association of Petroleum Geologists.
语种	英语
scopus关键词	Faulting; Gasoline; Hydrocarbons; Landforms; Lipids; Mineralogy; Petroleum geology; Petroleum reservoirs; Sodium chloride; Homogenization temperatures; Hydrocarbon-generation history; Hydrothermal fluids; Molecular parameters; Oil-oil correlations; Pressure-volume-temperatures; Trapping temperature; Volcanic reservoirs; Petroleum reservoir engineering; Carboniferous; fault zone; fluid inclusion; geochemistry; hydrocarbon generation; hydrocarbon reservoir; Neogene; Paleogene; paleotemperature; Permian; petroleum hydrocarbon; salinity; source rock; tectonic evolution; uplift; Chepaizi; China; Junggar Basin; Xinjiang Uygur
来源期刊	AAPG Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/125053
作者单位	College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, China; Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Research Institute of Petroleum Exploration and Development, Shengli Oil Company, Sinopec, Dongying, China
推荐引用方式 GB/T 7714	Chang X.,Wang Y.,Shi B.,et al. Charging of Carboniferous volcanic reservoirs in the eastern Chepaizi uplift, Junggar Basin (northwestern China) constrained by oil geochemistry and fluid inclusion[J],2019,103(7).
APA	Chang X.,Wang Y.,Shi B.,&Xu Y..(2019).Charging of Carboniferous volcanic reservoirs in the eastern Chepaizi uplift, Junggar Basin (northwestern China) constrained by oil geochemistry and fluid inclusion.AAPG Bulletin,103(7).
MLA	Chang X.,et al."Charging of Carboniferous volcanic reservoirs in the eastern Chepaizi uplift, Junggar Basin (northwestern China) constrained by oil geochemistry and fluid inclusion".AAPG Bulletin 103.7(2019).