Article
Energy & Fuels
Chen -Xi Zhu, Fu-Jie Jiang, Peng-Yuan Zhang, Zhao Zhao, Xin Chen, Yu-Qi Wu, Yuan -Yuan Chen, Wei Wang, Ze-Zhang Song, Tao Hu, Tian -Wu Xu, Yong-Shui Zhou
Summary: The presence of gypsum minerals in saline shale enhances pore space and leads to higher residual oil content. Shale samples with different gypsum contents were used in organic geochemical experiments, showing that high total organic matter (TOC) content and type II kerogen contribute to higher residual oil content. XRD and FE-SEM analysis confirmed the relationship between gypsum content and increased residual oil content. The data from this study are reliable for shale oil exploration in saline lacustrine basins.
Article
Energy & Fuels
Pengfei Zhang, Shuangfang Lu, Zizhi Lin, Hongliang Duan, Xiangchun Chang, Yongfeng Qiu, Qian Fu, Qi Zhi, Junjie Wang, Hongsheng Huang
Summary: This study developed a set of models to correct the losses of light and heavy hydrocarbons in the pyrolysis parameter S1 using conventional and multistage Rock-Eval experiments. The estimation models of adsorbed, free, and movable amounts of oil were determined and validated. The results showed that the correction models can accurately estimate the oil content in shale, which is crucial for shale oil exploration and development.
Article
Energy & Fuels
Yuanyuan Zhang, Zhanli Ren, Youlu Jiang, Jingdong Liu
Summary: The study on Paleogene tight sandstone reservoirs in the rifted-basin of Eastern China revealed significant differences in the properties and enrichment rules of hydrocarbon reservoirs in different structural areas, with quasi-continuous distribution of hydrocarbon resources in the Wendong area. The research also identified multiple stages of hydrocarbon charging, leading to varied reservoir characteristics in the region.
ENERGY EXPLORATION & EXPLOITATION
(2021)
Article
Geosciences, Multidisciplinary
Tao Hu, Xiongqi Pang, Tianwu Xu, Changrong Li, Shu Jiang, Qifeng Wang, Yuanyuan Chen, Hongan Zhang, Chuang Huang, Shuangyi Gong, Zhongchen Gao
Summary: Based on 40 years of geochemical data collection, this study reveals that laminated shales with TOC contents greater than 1 wt.% are the key source rocks in the heterogeneous Paleogene shales in the Dongpu depression.
Article
Geochemistry & Geophysics
Hanlie Cheng, Jianfei Wei, Zhaoyuan Cheng
Summary: This paper analyzes and studies the sedimentary and reservoir characteristics of the Paleogene bottom sandstone in Block Yingmai 7 through laboratory core analysis. The study reveals that the reservoir is a braided river delta sedimentary system with favorable reservoir properties. The research results provide important evidence for the prediction of oil and gas reservoirs in Block Yingmai 7.
Article
Energy & Fuels
Han Guomeng, Wang Li, Xiao Dunqing, Lou Da, Xu Muyue, Zhao Yonggang, Pei Yanlu, Guo Xiaowen, Teng Jiancheng, Han Yuanjia
Summary: The study utilized multiple techniques to investigate hydrothermal fluid-rock interactions in the Kong 2 Member of the Zaoyuan oilfield, identifying the presence of magmatic hydrothermal fluid as a potential cause for the abnormal enrichment of zeolite in the Cangdong Sag.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2021)
Article
Energy & Fuels
Tao Hu, Xiong-Qi Pang, Fu-Jie Jiang, Qi-Feng Wang, Guan-Yun Wu, Xiao-Han Liu, Shu Jiang, Chang-Rong Li, Tian-Wu Xu, Yuan-Yuan Chen
Summary: Analysis on 102 shale cores from the Dongpu Depression shows high organic matter content, wide distribution of pores and fractures, and high potential for shale oil enrichment.
Article
Geosciences, Multidisciplinary
Thomas Pape, Martin Blumenberg, Anja Reitz, Georg Scheeder, Mark Schmidt, Matthias Haeckel, Valentina N. Blinova, Michael K. Ivanov, Heiko Sahling, Klaus Wallmann, Gerhard Bohrmann
Summary: This study identified the likely sources of gas and oil emitted at various seep sites on the continental slope off Georgia in the Eastern Black Sea. The hydrocarbons ascending at these sites are determined to originate from the Eocene Kuma Formation and/or the Oligocene-Lower Miocene Maikop Group, which are considered to be the principal hydrocarbon sources in the region.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Wang Xiaobo, Li Jian, Yang Chunxia, Li Zhisheng, Chen Jianfa, Zheng Yue, Wang Yifeng, Li Jin, Yang Chunlong, Hao Aisheng, Ge Shouguo
Summary: This study focuses on the differences in nitrogen content and isotopes between coal-derived gas and oil-typed gas, establishing a comprehensive identification method that is of great significance in guiding the exploration of natural gas in China.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Yang Li, TianQi Qin, Zhong Liang, Chunshan Zheng
Summary: In this study, the biological methanogenic potential of coal and oil samples in an oil-bearing coal seam was analyzed. The results showed that the biological methanogenic efficiency of the coal sample increased over time, while the oil sample had a higher methanogenic potential. The microbial composition and metabolites specific to coal and oil were also investigated. This study provides valuable information for eliminating oil from coal in oil-bearing coal seams and reducing the risks associated with coal seam mining.
Article
Chemistry, Multidisciplinary
Yang Liu, Suping Yao, Chang Xu
Summary: The study conducted pyrolysis experiments on hydrogen-rich coal from the Taiyuan Formation and identified five stages in the structural evolution of the coal, covering details of local polycondensation and decomposition.
Article
Energy & Fuels
Jizhen Zhang, Youjun Tang, Chunfang Cai, Peng Sun, Yanyan Peng
Summary: By quantitatively evaluating the molecular marker parameters of crude oil, this study successfully calculated the cracking rate of crude oil in different regions of the Dongpu Depression in China. It was found that factors such as temperature, pressure, and thermochemical sulfate reduction have different effects on crude oil cracking.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Yong Qiao, Yinhui Zuo, Shiqi Tu, Jiazhen Zhang, Meihua Yang, Tao Zhang
Summary: The development of geothermal resources in the Dongpu Depression can bring economic benefits to the oilfield and improve the ecological environment. Therefore, it is necessary to evaluate the geothermal resources in the region. Based on various factors, the geothermal resource types and their distribution in different formations are determined. The results show that the Dongpu Depression has low-temperature, medium-temperature, and high-temperature geothermal resources.
SCIENTIFIC REPORTS
(2023)
Article
Energy & Fuels
Chenxi Zhu, Fujie Jiang, Pengyuan Zhang, Tao Hu, Ying Liu, Tianwu Xu, Yun-xian Zhang, Qian Deng, Yongshui Zhou, Hang Xiong, Zezhang Song
Summary: Source rocks in lacustrine rifting basins exhibit great heterogeneity, leading to imprecise assessments of hydrocarbon resources. This study focused on the Dongpu Depression, conducting organic geochemical experiments to determine effective source rocks and analyzing hydrocarbon expulsion ratios in different sedimentary environments. The results highlight the transition area as the main hydrocarbon expulsion zone, with Es-3(M) and Es-3(L) source rocks showing promising potential.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Geochemistry & Geophysics
Lianbo Zeng, Zhiguo Shu, Wenya Lyu, Mingjing Zhang, Hanyong Bao, Shaoqun Dong, Shuangquan Chen, Xiang Xu
Summary: The study of lamellation fractures in continental shales of the Paleogene Qianjiang Formation in the Qianjiang Depression, Jianghan Basin reveals that the density of fractures is positively correlated with their aperture and is controlled by factors such as mineral composition, lamination type, thickness, organic matter and pyrite content, lithofacies, and structural position. The development of lamellation fractures is influenced by various lithofacies, with the fractures being most developed in carbonaceous layered limestone dolomite and carbonaceous layered dolomite mudstone. Additionally, structure plays an important role in controlling the expansion and extension of lamellation fractures, with tectonic uplifts promoting higher fracture density in the high part of the structure.