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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, Xiangchun1,2; Wang, Yue1; Shi, Bingbing1; Xu, Youde3 | |
2019-07-15 | |
发表期刊 | AAPG BULLETIN
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ISSN | 0149-1423 |
EISSN | 1558-9153 |
出版年 | 2019 |
卷号 | 103期号:7页码:1625-1652 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
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 micro-thermometry of fluid inclusions, two hydrocarbon charging episodes are defined; these episodes were characterized by a low-peak-range homogenization temperature (Th) distribution (80 degrees C-90 degrees C) and high salinity (13.22-13.42 wt. % NaCl) and a high-peak-range Th distribution (120 degrees C-130 degrees 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 degrees C, 53.7 degrees C, 60.9 degrees C, and 58.1 degrees 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 and C-20 + C-21 triaromatic steroids/C-20 + C-21 + C-26 -C-28 triaromatic steroids (TA(I)/TA(I+II)), which roughly coincided with the active fracturing. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000475472700005 |
WOS关键词 | ORGANIC GEOCHEMISTRY ; FORELAND BASIN ; SOURCE ROCKS ; TARIM BASIN ; CRUDE OILS ; FAULT ZONE ; NW CHINA ; PETROLEUM ; MIGRATION ; MATURITY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/184961 |
专题 | 地球科学 |
作者单位 | 1.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao, Shandong, Peoples R China; 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao, Shandong, Peoples R China; 3.Sinopec, Shengli Oil Co, Res Inst Petr Explorat & Dev, Dongying, Peoples R China |
推荐引用方式 GB/T 7714 | Chang, Xiangchun,Wang, Yue,Shi, Bingbing,et al. Charging of Carboniferous volcanic reservoirs in the eastern Chepaizi uplift, Junggar Basin (northwestern China) constrained by oil geochemistry and fluid inclusion[J]. AAPG BULLETIN,2019,103(7):1625-1652. |
APA | Chang, Xiangchun,Wang, Yue,Shi, Bingbing,&Xu, Youde.(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),1625-1652. |
MLA | Chang, Xiangchun,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):1625-1652. |
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