Article
Geosciences, Multidisciplinary
Fengnian Chang, Shaochun Dong, Hongwei Yin, Zhenyun Wu
Summary: This study used satellite images to detect and map the surface deformation in the Kuqa foreland fold-thrust belt. The results show that the belt is still undergoing compression and shortening, driving the movement of underground salt and resulting in various spatial-temporal surface deformation patterns.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Di Xiao, Long Wen, Ya Zhang, Chen Xie, Xiucheng Tan, Jian Cao
Summary: The study investigated the middle Permian Qixia Formation in the piedmont of the Longmenshan Mountains in northwestern Sichuan Basin, China. It found that natural gas in the thrust belt was derived from lower Cambrian strata by oil cracking, while the thrust front and forebulge belts had high natural gas content and good preservation due to less deformation in the area. The research suggests that hydrocarbon resources in the (ultra-)deep strata in the basin-mountain transition zone could be an important exploration target globally.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geochemistry & Geophysics
Junpeng Wang, Lianbo Zeng, Xianzhang Yang, Chun Liu, Ke Wang, Ronghu Zhang, Xiguang Chen, Yuanji Qu, Stephen E. Laubach, Qiqi Wang
Summary: The ultra-deep low-porosity sandstone oil and gas reservoirs in the Kuqa thrust belt of Tarim Basin are important sources of natural gas supply in China. Fracture types and patterns, including shear-mode and opening-mode fractures, were described using outcrops from four exposed folds in the study area. Fracture distribution, density, aperture size, and kinematics varied between different locations on the folds, with shear-mode fractures dominating the flanks and opening-mode fractures localized in fold hinges.
Article
Geochemistry & Geophysics
Wen-Xin Yang, Dan-Ping Yan, Liang Qiu, Michael L. Wells, Jian-Meng Dong, Tian Gao, Zhi Zhang, Hongxu Mu, Xinwen Wang, Fangyue Wang
Summary: The study investigated the structural styles and evolution of the Nanpanjiang fold-thrust belt and foreland basin system in southwestern South China during the Indosinian orogenic belt growth. The results revealed fault-related folds with deep duplexes and shallow imbricates, indicating multi-staged thrusting during the Indosinian orogeny. The kinematic and dynamic relationship between the fold-thrust belt and foreland basin during this tectonic event was described as a progressive deformation sequence.
Article
Geosciences, Multidisciplinary
Zhihua Song, Liangjie Tang, Chao Liu
Summary: The study indicates that the Tumuxiuke thrust at the northeastern boundary of the Bachu uplift in the Tarim Basin is controlled by pre-existing normal faults, leading to the formation of monoclines and fault-propagation folds. Through simulation and analysis, the study reveals the impact of thrust faults on folding deformation, influencing the rate of fold amplification and structural characteristics.
JOURNAL OF STRUCTURAL GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Neng Wan, Shaofeng Liu, Xueyan Li, Bo Zhang, Rong Ren, Zhuxin Chen
Summary: The coupling mechanism between mountain building and basin formation in the northern part of the Jurassic Sichuan Basin is still unclear. This study uses stratigraphic correlation, basin subsidence analysis, and flexural simulation to quantitatively assess the control of fold-thrust belts on basin subsidence. The results reveal limited flexural control of mountain loading on basin subsidence, and highlight the importance of plate rigidity and dynamic subsidence.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Energy & Fuels
LIANG Han, WEN Long, RAN Qi, HAN Song, LIU Ran, CHEN Kang, DI Guidong, CHEN Xiao, PEI Yangwen
Summary: By integrating geological features and data, the structural deformation characteristics of the frontier fault of thrust nappes have been detailed. This fault plays a significant role in the oil/gas accumulation system in the northwest of the Sichuan Basin.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2022)
Article
Geosciences, Multidisciplinary
Yang Wang, Shaonan Zhang, Honglei Xie, Qi Wang, Jinqiang Tian
Summary: Light oil is a high-quality crude oil and its formation and chemical composition are of great concern to petroleum geologists. The Yakela Field and Shunbei Field, located in Yakela and Shunbei regions respectively, are the main light oil fields in the Tabei uplift of the Tarim Basin. Analysis of crude oil samples through gas chromatography and gas chromatography-mass spectrometry revealed that the light oils in these fields have similar marine source rocks and are formed under different mechanisms.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Bin Li, Karin Goldberg
Summary: The study on the diagenetic controls of deep carbonate reservoirs in the Tarim Basin revealed the impacts of dolomitization and various ascending fluids on reservoir quality. Processes such as dolomite precipitation and fluid percolation significantly influenced the porosity of the reservoirs.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Zhuoyi Shen, Fusheng Yu, Qianjun Wang, Jingqi Zhang, Yan Xue
Summary: In this study, the propagation and linkage of structural patterns in the fold-and-thrust belts of the southern margin of the Junggar Basin in China were investigated using the Discrete Element Method (DEM). The simulations demonstrated that resistance from adjacent modules influenced the development of back-thrusts, while drag from faster moving modules hindered nucleation in slower modules. The results also revealed the presence of two types of transfer zones caused by shear stress in the piedmont region and in front of the fold belts. These findings are important for understanding the formation process of oil and gas traps in similar compressional areas.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Changyu Fan, Gang Wang, Zhenliang Wang, Xiaojie Han, Jie Chen, Kualie Zhang, Baoshou Zhang
Summary: Accurate prediction of overpressure before drilling is crucial for hydrocarbon exploration. This study developed a method to predict overpressure by restoring loading curves of different rock formations in a fold-thrust belt and calculating the vertical effective stress offset using fluid pressure measurements. The relationship between Delta VES, FDIST, and Delta H was found to be essential for predicting overpressure in areas with intense tectonic compression.
Article
Geography, Physical
Chenlin Hu, Changcheng Han, Jinghui Ma, Wenfeng Wang, Fangyu Zhao, Wenxuan Sun
Summary: This study investigated the sedimentary differentiation and anisotropy of magnetic susceptibility (AMS) of the Tarim Carbonate Platform (TCP) in order to infer the paleowind directions during each epoch of the Cambrian-Ordovician and constrain its paleogeographic location. The results showed that the prevailing wind directions of the Early, Middle, and Late Cambrian were 226 degrees +/- 42 degrees, 207 degrees +/- 43 degrees, and 193 degrees +/- 36 degrees from present north, respectively, while those of the Early, Middle, and Late Ordovician were 178 degrees +/- 39 degrees, 165 degrees +/- 43 degrees, and 155 degrees +/- 52 degrees from present north, respectively.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Yu Zhen, Xiongfei Xu, Dengfa He, Xinning Li, Di Li
Summary: Studying the structural evolution of the piedmont fold and thrust belt is crucial for understanding the mechanism of intracontinental collision orogeny. In this study, we identified a large-scale thrust nappe in the southwestern margin of the Santanghu Basin, providing evidence for studying the Mesozoic-Cenozoic tectonic evolution of Moqinwula Mountain. Through electromagnetic and high-resolution seismic profiles, we determined the composition of the nappe and the tectonic activities it underwent. The results suggest multiple thrusting events and significant shortening during the Late Jurassic and Late Cretaceous. This study contributes to understanding the transition mechanism of mountain formation in the Eastern Tianshan region.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Wenqiao Xu, Hongwei Yin, Dong Jia, Changsheng Li, Wei Wang, Gengxiong Yang, Wanhui He, Zhuxin Chen, Rong Ren
Summary: In the NW Sichuan Basin, continuous compression and weak detachments have led to decoupled and ladder-like deformation of the thrust belt. Rapid uplift and erosion have contributed to the formation of various complex structures, with erosion also preventing deformation from propagating upwards.
FRONTIERS IN EARTH SCIENCE
(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
Energy & Fuels
Xinping Liang, Qiuyang Zhao, Yu Dong, Liejin Guo, Zhijun Jin, Quanyou Liu
Summary: The study found that temperature and time are the dominant factors affecting gas yield and selectivity, with increasing temperature promoting endothermic reactions and accelerating the water-gas shift reaction. Pressure increase has a less negative but negligible effect on gasification. In general, carbon gasification efficiency and hydrogen selectivity first increase and then stabilize when the reaction time is prolonged, and the water-shale mass ratio is increased and (or) the shale particle size is decreased.
Article
Geochemistry & Geophysics
Tao Jiang, Zhijun Jin, Zongquan Hu, Wei Du, Zhongbao Liu, Jianhua Zhao
Summary: The study investigated the types and characteristics of organic pores in shale formations, revealing that organic pores are mainly concentrated in highly matured shale with three main types: algae, graptolite, and pyrobitumen. The connectivity of organic pores is better in shale with high organic content, which plays a crucial role in shale gas migration.
Article
Geosciences, Multidisciplinary
Quanyou Liu, Peng Li, Zhijun Jin, Xinping Liang, Dongya Zhu, Xiaoqi Wu, Qingqiang Meng, Jiayi Liu, Qi Fu, Jianhua Zhao
Summary: The study highlights the significant impact of sulfate reduction on organic matter preservation, with higher SRI values leading to extensive organic matter consumption and lower SRI values resulting in minimal degradation effects.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geochemistry & Geophysics
Guanping Wang, Zhijun Jin, Zongquan Hu, Guangxiang Liu, Tong Zhu, Wei Du, Hongliang Wang, Jing Wu
Summary: This study investigated the fine-grained deposition and evolution characteristics of the Wufeng-Longmaxi shales, key targets for Chinese shale gas exploration. The research accurately identified favorable lithofacies for shale gas exploration and discussed the differential evolution of lithofacies in the sedimentary system tract. The study is significant for further exploration of marine shale and improvement of the theory of shelf fine-grained sedimentary systems.
Article
Geochemistry & Geophysics
Huiyuan Xu, Quanyou Liu, Dongya Zhu, Qingqiang Meng, Zhijun Jin, Qi Fu, Simon C. George
Summary: Laboratory experiments have established hydrothermal organic reactions in the presence of mineral catalysts, but little is known about hydrothermal catalytic conversion (HTCC) and the existence of complex molecules in continental hydrothermal systems. Evidence from natural subsurface samples shows a wide range of mineral catalysis of polycyclic aromatic compounds, with a stepwise interaction of organic compounds with metal bearing hydrothermal fluids. This study suggests that various phenyl/sulfur/oxygen-containing compounds are metastable equilibrium products of complex redox reactions under specific hydrothermal conditions.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Geosciences, Multidisciplinary
Dong Guo, Zhijun Jin
Summary: Located in the SW part of the Bohai Bay Basin, the Dongpu Sag is rich in oil and gas, with the main source rock found in the third member (Es3) of the Middle Eocene Shahejie Formation. Due to the complex geology of the area, the stratigraphic subdivision and deposition timing of each member and sub-member in the Shahejie Formation is challenging and controversial. By establishing a high-resolution cyclostratigraphic framework, the study provides a more precise time interval to locate the effective source rocks in the sag and allows for fine-scale stratigraphic correlation within the region and beyond.
JOURNAL OF ASIAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Xiaoping Liu, Zhijun Jin, Jin Lai, Xuechun Fan, Ming Guan, Honglin Shu, Gaocheng Wang, Mengcai Liu, Yufeng Luo
Summary: Fluorescence thin section and SEM were used to analyze pore spaces of oil shales, while NMR T-2 spectra and fractal analysis were applied to investigate pore size distribution and fractal dimensions. The results showed the complex pore assemblages in oil shales and the correlation between fractal dimensions and NMR parameters.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Energy & Fuels
Kouqi Liu, Zhijun Jin, Natalia Zakharova, Lianbo Zeng, Adedoyin Adeyilola, Mehdi Ostadhassan
Summary: The pore structures of shale samples can be accurately evaluated through adsorption experiments. Proper experimental parameters, such as the number of test points and equilibrium interval time, are crucial for obtaining reliable results. Ignoring these parameters may lead to inaccurate pore structure information. It is important to choose appropriate experimental parameters rather than using default values for meaningful pore structure analysis.
Article
Energy & Fuels
Kouqi Liu, Zhijun Jin, Lianbo Zeng, Yujie Yuan, Mehdi Ostadhassan
Summary: By using thermal treatment, low field NMR experiments, and fractal theory analysis on shale samples, the critical dehydration temperature for determining the clay bound water can be accurately identified, saving costs by avoiding unnecessary experiments.
Article
Geosciences, Multidisciplinary
Juye Shi, Zhijun Jin, Quanyou Liu, Tan Zhang, Tailiang Fan, Zhiqian Gao
Summary: Exploration of shale oil in China has shown that laminated shales are favorable lithofacies for effective shale oil production. A study on Paleogene organic-rich shales in the Dongying Sag, Bohai Bay Basin revealed two categories and six types of laminar structures, with those having high laminar continuity exhibiting better reservoir and oil-bearing properties compared to those with poor continuity. Shales with thick parallel and wavy laminar structures were found to have favorable petrophysical parameters for shale oil exploration in the area.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Energy & Fuels
Gang Zhao, Zhijun Jin, Wenlong Ding, Guangxiang Liu, Jinbiao Yun, Ruyue Wang, Guanping Wang
Summary: The study on fractures in the Wufeng-Longmaxi Formation in Hunan Province reveals that these fractures can be divided into different types based on their combination characteristics and roughness. The fractures mainly occurred in the late Yanshanian-Himalayan period and experienced repeated processes of splitting, healing, and re-splitting. The gas migration and enrichment in these fractures play a key role in the distribution and preservation of shale gas.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Review
Geosciences, Multidisciplinary
Quanyou Liu, Peng Li, Zhijun Jin, Yuewu Sun, Guang Hu, Dongya Zhu, Zhenkai Huang, Xinping Liang, Rui Zhang, Jiayi Liu
Summary: The study focused on the impact of volcanic activity on paleoproductivity and preservation conditions in lacustrine shale formation. The results indicated that volcanic activity enhanced ancient productivity and promoted organic matter preservation.
SCIENCE CHINA-EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Ming Guan, Xiaoping Liu, Zhijun Jin, Jin Lai, Jie Liu, Biao Sun, Tian Liu, Zuxian Hua, Wen Xu, Honglin Shu, Gaocheng Wang, Mengcai Liu, Yufeng Luo
Summary: The heterogeneity and lack of proper parameters in lacustrine shale oil occurrences hinder the assessment of shale oil reserves. This study characterized shale oil content using petroleum compositional characteristics and determined its spatial occurrence. The controlling factors of shale oil content were also discussed. This work has implications for optimizing exploration targets and evaluating resource potential.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Energy & Fuels
Xiao-Ping Liu, Ming Guan, Zhi-Jun Jin, Zhe Cao, Jin Lai, Lun-Ju Zheng, Wen-Qi Li, Biao Sun, Shan-Yong Chen
Summary: Pyrolysis experiments were conducted on lacustrine organic-rich shale to investigate the impact of hydrocarbon generation on shale pore structure evolution. The results show that thermal evolution controls the transformation of organic matter, characteristics of hydrocarbon products, and changes in pore structure.
Article
Energy & Fuels
Jin Zhijun, Zhu Rukai, Liang Xinping, Shen Yunqi
Summary: The article compared the geological and engineering characteristics of shale oil reservoirs between China and the United States, and proposed 8 issues worthy of attention in the exploration and development of lacustrine shale oil in China. In the future, further research is needed on key scientific issues such as terrestrial fine-grained sediment deposition processes, diagenesis-hydrocarbon generation mechanisms, and shale layer fracturing mechanisms.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2021)