Article
Energy & Fuels
Jialin Wan, Yanjie Gong, Qingong Zhuo, Xuesong Lu, Wenhui Huang
Summary: This study reconstructs the hydrocarbon accumulation history in the Jurassic reservoir in the eastern Kuqa Depression through integrated investigation and analysis methods. The results show that there were two episodes of oil charging, with different types of hydrocarbons entering the reservoir from different source rocks. Active faults provided channels for vertical migration of hydrocarbons. The findings of this study contribute to a better understanding of the hydrocarbon accumulation mechanism in the eastern Kuqa Depression.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2023)
Article
Energy & Fuels
Peng Fang, Jia Wu, Botian Li, Bin Cheng, Daofu Song, Ningning Zhong
Summary: This study compared the performance of dispersive solid-phase extraction (DSPE) and mild oxidative degradation in isolating asphaltene-occluded hydrocarbons. DSPE was found to be effective in extracting occluded hydrocarbons without undesirable chemical alterations, allowing for subsequent quantitative analysis. The chemical composition of the occluded n-alkanes provided useful information regarding the origin of the petroleum.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Guangyou Zhu, Kai-Jun Zhang
Summary: The Tarim basin in China is a main target for hydrocarbon exploration and hosts the Early Permian LIP. Six major second-order domes were identified in this area, characterized by Permian basaltic dykes and volcanic craters, where almost all Paleozoic oil and gas reservoirs are located. The eruption of the LIP is proposed to have created space for oil and gas charge and triggered the rapid release of hydrocarbons, controlling the formation of Paleozoic oil and gas fields.
Article
Geosciences, Multidisciplinary
Huang Xiaowei, Jin Zhijun, Liu Quanyou, Meng Qingqiang, Zhu Dongya, Liu Jiayi, Liu Jinzhong
Summary: Through experiments on post-mature kerogen samples from the Yurtus Formation in the Tarim Basin, it was found that hydrogen and catalysts from deep-derived fluids have significant catalytic hydrogenation effects on organic-rich matter, increasing hydrocarbon generation efficiency and potential in post-mature source rocks.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Energy & Fuels
Hanyu Deng, Haizu Zhang, Yiman Zhang, Naidong Chen, Tao Mo, Bin Cheng, Zewen Liao
Summary: This study successfully establishes a line chart model for distinguishing light oil and condensate based on the analysis of the component and stable hydrogen isotope distribution of C-7 light hydrocarbons. By comparing the differences between different values, the sedimentary facies of the source rocks for light oil and condensate can be effectively determined.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2023)
Article
Energy & Fuels
Jinhu Zhang, Youxing Yang, Yongjin Gao, Sumei Li, Bingsong Yu, Xiaoxing Gong, Zhongkai Bai, Miaoqing Miao, Yuanyin Zhang, Zhichao Sun, Zhaolin Qi
Summary: This study focuses on the Neogene hydrocarbons of the Wensu uplift along with their geochemical characteristics and origin. The results show that crude oils from the Wensu uplift display typical lacustrine characteristics, distinct from the adjacent marine crude oils.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Xiao Zhenglu, Chen Shijia, Li Yong, Su Kaiming, He Qingbo, Han Meimei
Summary: Comprehensive analyses of the origin and accumulation characteristics of crude oil in the Xianshuiquan structure have revealed the source rocks, petroleum systems, and exploration potential. The results indicate that the deep members of the Xianshuiquan structure have considerable exploration prospects in the northwest Qaidam Basin.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Geosciences, Multidisciplinary
Guangyou Zhu, Kun Zhao, Huimin Yu, Fang Huang, Tingting Li
Summary: The study found that the compositions of silicon, oxygen, and strontium isotopes in chert from the Ordovician reservoir can help constrain the source and migration of Si-rich fluids, preventing storage performance decline and drilling failure.
JOURNAL OF ASIAN EARTH SCIENCES
(2021)
Article
Environmental Sciences
Liwen Huang, Ziyong Sun, Aiguo Zhou, Junbo Bi, Yunde Liu
Summary: This study investigated the distribution characteristics and controlling processes of fluoride enrichment in groundwater in arid inland irrigated areas. The results showed that fluoride concentration in groundwater was generally high and positively correlated with salinity. River water was identified as the main source of fluoride in groundwater, and anthropogenic inputs were found to contribute to fluoride enrichment.
ENVIRONMENTAL POLLUTION
(2022)
Article
Geosciences, Multidisciplinary
Yongbin Quan, Zhongyun Chen, Yiming Jiang, Hui Diao, Xinong Xie, Yongchao Lu, Xuebin Du, Xiaofeng Liu
Summary: The Xihu Sag is an important petroliferous area in the East China Sea Basin, with petroleum mainly generated from coal-bearing source rocks. Different source rocks have different hydrocarbon generation potentials, and mudstones are identified as the major source rocks in the Xihu Sag. This contradiction may be due to the thin layer thickness and limited distribution of coal, as well as the inability of coal to effectively expel the generated high molecular weight hydrocarbons.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Environmental Sciences
Noora Al-Shamary, Hassan Hassan, Alexandra Leitao, Simon M. Hutchinson, Debapriya Mondal, Stephane Bayen
Summary: Levels of organic contaminants (TPHs, PAHs) were simultaneously determined in both abiotic (sediments, seawater) and biotic (Pinctada radiata oysters) samples at four sites along the coastline of Qatar (Arabian Gulf) in 2017-2018. TPHs and PAHs were more frequently detected in oyster tissues than sediment and seawater samples collected from the same areas. While levels of TPHs and PAHs in seawater and sediments were lower than previous local studies and worldwide studies, PAHs levels observed in pearl oyster tissue (25.9-2240 μg/kg) were relatively higher than in previous studies in Qatar. In general, eight PAHs compounds were detected in oyster tissue, with benzo(a)pyrene displaying the highest concentration. The coast of Qatar could be affected by sea-sonal patterns of pollutants, where TPHs and PAHs levels increased in winter compared to summer. These results provide key information on the use of the pearl oyster as a bioindicator species and Qatar's marine environment.
MARINE POLLUTION BULLETIN
(2023)
Article
Geosciences, Multidisciplinary
Cong Yu, Yunyan Ni, Jinxing Dai, Yuanyuan He, Chenchen Fang, Fengrong Liao
Summary: This research analyzed the composition and hydrocarbon isotope geochemical characteristics of ultra-deep natural gas in the Tarim Basin. The results showed that the natural gas in the Kuqa sandstone reservoir is dry gas with high methane content and low ethane content, while the ultra-deep gas in the marine craton carbonate reservoirs is wet gas with mainly methane and a small amount of ethane. The isotopic analysis revealed that the ultra-deep gas in the Kuqa area is mainly coal-derived gas, while the gas in the marine craton carbonate reservoirs is oil-type gas with complex sources.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Fei Huo, Xingzhi Wang, Luping Li, Xin Luo, Xiyan Yang, Chen Shen, Liang Li, Yunbo Ruan, Huiwen Huang
Summary: Based on the study of the Halahatang Area, this research reveals the sources and filling processes of Lower Paleozoic Ordovician oil and gas resources. The Cambrian source rocks are found to be the main contributors to Ordovician crude oil in this area, and the Ordovician natural gas exhibits typical characteristics of sapropelic gas. The accumulation process of oil and gas in the Ordovician reservoirs can be divided into three stages. The Middle-Late Caledonian period is the generation period of crude oil, the late Hercynian period is the main accumulation period, and the Himalayan period is dominated by dry gas filling.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
You Zhang, Qiang Li, Yongbin Niu, Bin Li, Yanqing Shi, Yumao Pang
Summary: This study investigated the key stages and models of hydrocarbon accumulation in the Gucheng area of the Tarim Basin by analyzing the Ordovician sedimentary rocks. The results showed that the area has favorable paleo-structural positions and pathway systems for hydrocarbon migration and accumulation. The multi-stage tectonic thermal events of the Caledonian and Hercynian stages played a crucial role in the adjustment and modification of deep hydrocarbon accumulation. Therefore, the western and northern parts of the Gucheng area are favorable zones for hydrocarbon exploration in the Tarim Basin.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Energy & Fuels
Meng Li, Xiangbin Yan, Liangjie Tang, Lu Yun
Summary: The study investigates the origin, evolution, hydrocarbon accumulation mechanisms, and significance for future oil and gas exploration of the Pishan Caldera in the Tarim Basin of northwest China. The research reveals that volcanic eruptions, caldera collapse, and reactivation of the caldera led to Cretaceous oil migration and accumulation in Cretaceous breccia reservoirs. The study also proposes a generalized model for hydrocarbon reservoirs related to calderas.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Review
Geosciences, Multidisciplinary
Fuquan Yang, Xinxia Geng, Zhixin Zhang, Guoren Liu, Hanqing Zhang
Summary: Northern Xinjiang in China is an important part of the Central Asian Orogenic Belt, characterized by multiple episodes and types of mineralization. Cu and Au deposits are mostly found in Altay, Junggar, and Tianshan, with minor occurrences in Beishan. The most common types of Cu-Au deposits are volcanogenic and porphyry deposits. The formation of Cu-Au deposits can be divided into five mineralization episodes, with the Devonian and Carboniferous being the main periods. These deposits developed in various tectonic settings, including island arc, continental arc, collision, and postcollisional extensional tectonics.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Jiang Zhu, Dan-yang Liu, Chao Chen, Song Chen, Yuan-bing Zou, Leonid Danyushevsky, Jing-meng Huang, Xiang-wei Tang
Summary: Numerous lode gold and silver deposits have been discovered in orogenic belts in China. This study focuses on the formation and fluid evolutions of the super-large Yingdongpo gold and giant Poshan silver deposits in the Tongbai-Dabie orogen. The results suggest that both deposits were formed concurrently with Early Cretaceous granitic magmatism and the ore-forming fluids were primarily of magmatic origin with meteoric water inputting. The gold mineralization is related to a change in the physicochemical properties of the fluids, while the silver mineralization is favored by progressive deposition of sulfides in a slowly cooling hydrothermal system.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Arun Bhadran, B. P. Duarah, Drishya Girishbai, Mohammad Atif Raza, Avi Mero, Sandeep Lahon, A. L. Achu, Girish Gopinath
Summary: The Brahmaputra foreland basin, known for its dynamic tectonism and sediment load, exhibits a variety of seismically generated soft sediment deformation structures (SSDS) such as clastic dikes, sand sills, and micro-faults. These structures, influenced by multiple strong seismic events, are characterized by their dimensions, intrusion angles, cross-cutting relations, wall shattering, and age. The study suggests that a significant earthquake with high intensity and magnitude might have caused liquefaction features in the area. The findings highlight the importance of studying SSDS in tectonically active regions with limited surface ruptures and dense alluvial cover.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Huan Wang, Lirong Dou, Xingyang Zhang, Jiquan Yin, Beiwei Luo, Haigang Duan, Peiguang Yang, Yifan Song
Summary: Quantitative analysis of sediment composition and microfacies helped identify changes in facies belts in the Cretaceous Mishrif Formation. The study demonstrated the importance of carbonate microfacies quantification and its implications for paleogeographic research.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Boran Wang, Zhilong Huang, Dongsheng Xiao, Haiyue Yu, Wenren Zeng, Xin Wang, Tong Qu, Zhiyuan Li, Yizhuo Yang
Summary: By systematically analyzing the source rocks of the Sangonghe Formation in the Taibei Sag, NW China, and using kerogen kinetics modeling, this study reveals the influence of geological conditions on hydrocarbon generation and expulsion. The source rocks in different environments show distinct geochemical characteristics and hydrocarbon generation potential.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Haiying Yang, Zhifang Zhao, Haifeng Fan, Min Zeng, Jiafei Xiao, Xiqiang Liu, Shengwei Wu, Jiangqin Chao, Yong Xia
Summary: This paper investigates the REE enrichment and the role of Fe/Mn (oxyhydr)oxides in marine phosphorites from the early Cambrian period in South China. The study reveals that Fe/Mn (oxyhydr)oxides play a crucial role in REE enrichment and are controlled by Fe-redox pumping.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Qing Li, Hongbin Wang, Feng Cai, Di Luo, Fanxing Kong, Ang Li, Xiting Liu
Summary: The elemental and isotopic compositions and abundance of carbonates in marine sediments are used to reconstruct ancient climate and ocean conditions. This study analyzed sediment samples from the Okinawa Trough to examine the relationship between carbonates' compositions and methane seepage and sea-level changes. The results indicate that both biogenic and authigenic carbonates are important factors in understanding paleoclimate and paleoceanography.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Maryam Akbarzadeh Aghdam, Abdolreza Ghods, Farhad Sobouti, Khalil Motaghi, Keith Priestley, Mohammad Enayat
Summary: The Makran subduction zone is difficult to monitor due to limited seismic activity, but a temporary seismic network was installed to investigate the relationship between different regions and detect seismicity. The observed seismicity suggests the presence of structural boundaries and seismically inactive areas.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Zhen-Yu Wang, Hong-Rui Fan, Hai-Dong She, Kui-Feng Yang
Summary: This study conducted detailed geochemical, geochronological and isotopic analyses on the Songxian syenite in the Qinling Orogen. The results revealed the magma sources, petrogenesis and geodynamic implications of this alkaline intrusion. The study suggests that the syenite was formed through multiple stages of magmatism, involving the partial melting of the enriched lithospheric mantle and mixing with melts derived from the lower crust.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Yu Li, Wen-Liang Xu, Xiao-Ming Zhang, Jie Tang
Summary: This study presents new zircon U-Pb-Hf and whole-rock geochemical data for Jurassic intrusive rocks in the Yanbian area of NE China, providing insights into the subduction history of the Paleo-Pacific Plate. The study reveals three stages of Jurassic magmatism in the area, indicating the presence of an active continental margin related to the initial subduction of the Paleo-Pacific Plate beneath the Eurasian continent.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Lina Ai, Shengfa Liu, Shuai Cong, Hui Zhang, Peng Cao, Kaikai Wu, Wenxing Ye, Che Abd Rahim Mohamed, Xuefa Shi
Summary: This study investigates the depositional configurations and sedimentary environments of the Malacca Strait through analyzing grain size characteristics and hydrographic data. The results show that residual sediments are concentrated in the central region, while modern terrigenous sediments are distributed along the coast of Malaysia and the northern region. The sedimentary environments are influenced by seasonal variations and hydrodynamic conditions.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Liang Xiao, Jia-qi Liang, Li-yan Guo, De-shuang Ji, Man Yuan, Xiang-chuan Li, Nan Sun, Zuo-chen Li
Summary: This study investigates the correlation between stable carbon isotopes of plant fossils and CO2 levels in the Jurassic period. The results suggest a weak correlation between the two, indicating caution is needed when using stable carbon isotopes to reconstruct high paleo-CO2 concentrations.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Xuli Yang, Feng Huang, Jifeng Xu, Xijun Liu, Liying Zhang, Zhao Zhang, Benyan Xu, Man Zhang, Yunchuan Zeng, Qian Liu, Mingda Lv
Summary: The extensively developed Early Cretaceous intermediate-felsic rocks in the northern North China Craton provide valuable insights into the nature of Paleo-Pacific subduction and associated geodynamic processes. Geochemical and geochronological analyses of trachyandesites and rhyolites from the eastern Hebei, northern NCC suggest that the trachyandesites likely originated from enriched mafic lower crust and the rhyolites are derived from the trachyandesitic magmas through fractional crystallization. The migration direction change of these rocks is believed to be primarily attributed to slab rollback of the subducting Paleo-Pacific Plate.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Wei Liu, Ping Gao, Xianming Xiao, Yanming Zhao, Yijie Xing, Jinku Li
Summary: The organic-rich shales of the Shuijingtuo Formation in China are an important target for shale gas exploration. The upper section of the formation, primarily consisting of limestone, silty shale, and black shale, has been rarely studied but recently showed promising results for shale gas exploration. Geochemical investigations of the upper section shale deposits revealed that the organic matter enrichment mechanism underwent dynamic changes due to relative sea-level changes and episodic upwelling activities.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Xin Wang, Chen Zhang, Zixin Xue, Qianyou Wang, Zhenxue Jiang, Kun Zhang, Xiangye Kong
Summary: This study analyzed the heterogeneity of gas compositions and the effects of magmatism on gas accumulation in shale gas exploration in the Yangtze plate. The results showed that magmatism caused the development of micro-fractures in shale reservoirs and accelerated the thermal evolution rate of organic matter. The impact of magmatism on shale gas accumulation varied in different regions, either favoring or compromising efficient gas accumulation in shale reservoirs.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)