Article
Geosciences, Multidisciplinary
Chao Li, Likuan Zhang, Xiaorong Luo, Yuhong Lei, Lan Yu, Ming Cheng, Yongshi Wang, Zhonglu Wang
Summary: Abundant oil resources associated with overpressure have been confirmed to be present in the Paleogene Shahejie Formation in the Chezhen Depression. The distribution and mechanisms of overpressure play a significant role in influencing hydrocarbon migration and promoting efficient oil accumulation in different reservoirs. Understanding the relationship between overpressure and hydrocarbon migration is crucial for further exploration in the Chezhen Depression and other extensional basins.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Ze Tao, Zhiliang He, Tiago M. Alves, Xiaowen Guo, Jian Gao, Sheng He, Wen Zhao
Summary: This study investigated the structural evolution in the Lijin and Boxing sags in the Dongying depression and found that inherited structures significantly control the development of overpressure in sedimentary basins.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Zhichao Yu, Zhizhang Wang, Wentian Fan, Jie Wang, Ziyan Li
Summary: This study reveals the relationship between reservoir quality and sedimentary processes and diagenetic alterations in a complex fan delta reservoir. Sedimentary processes have a significant control over reservoir quality, with spatial variation in grain size and clay content. Compaction is the dominant mechanism negatively affecting reservoir quality, while cementation has a weaker effect. The most favorable reservoirs occur in the subaqueous distributary channels in the fan delta front.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Muhammad Raiees Amjad, Muhammad Zafar, Tausif Ahmad, Muyyassar Hussain, Urooj Shakir
Summary: Overpressure conditions in the eastern part of Potwar Basin in Pakistan are primarily influenced by compaction disequilibrium and tectonic stresses. Geohistory analysis and log-based pressure prediction help in determining the overpressuring mechanism and identifying the deviation of porosity and compaction trend under high pressure conditions.
FRONTIERS IN EARTH SCIENCE
(2022)
Review
Engineering, Marine
Chong Li, Linsen Zhan, Hailong Lu
Summary: Overpressure is a common occurrence in marine sediments and is closely related to hydrocarbon accumulation and safety issues in oil and gas exploration and exploitation. This study reviews and classifies the mechanisms for overpressure development, including physical, chemical, and biological processes.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Changyu Fan, Gang Wang
Summary: The study shows that as burial depth increases, mudstone compaction can be divided into three sections: mechanical compaction, chemically enhanced mechanical compaction, and stable compaction. Using a piecemeal geometric model of loading curves can provide more accurate predictions of formation pressure and identification of overpressure origins.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Likuan Zhang, Chao Li, Xiaorong Luo, Zengbao Zhang, Zhiping Zeng, Xincheng Ren, Yuhong Lei, Meng Zhang, Junyang Xie, Ming Cheng, Naigui Liu, Bingbing Xu
Summary: This study investigates the generation mechanisms of abnormally high pressure in the Mesozoic formations in the central Junggar Basin. The results show that high-overpressure mainly occurs in isolated sand bodies below 4500 m and is hydraulically connected to Permian source rocks. The research is of great significance for understanding hydrocarbon migration and evaluating caprock integrity in similar basins.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Yanqi Hua, Xiaowen Guo, Ze Tao, Sheng He, Tian Dong, Yuanjia Han, Rui Yang
Summary: The Bonan sag in the Bohai Bay Basin of China is a prolific oil-producing Cenozoic basin with three identified overpressure systems caused by mechanisms such as disequilibrium compaction and oil generation. Different sealing rocks, such as mudstones and gypsum-rich layers, play important roles in maintaining the overpressure in different intervals. The variation in oil generation capacity of source rocks and sealing conditions controls the overpressure mechanisms in the Bonan sag.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Energy & Fuels
Li Wei, Chen Zhuxin, Huang Pinghui, Yu Zhichao, Min Lei, Lu Xuesong
Summary: The formation mechanisms of formation overpressure in different foreland basins vary, but they share common characteristics, including the development of multiple types of overpressure and multi-layer overpressure, which are conducive to the formation of large gas fields.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2021)
Article
Geosciences, Multidisciplinary
Ahmed E. Radwan
Summary: This study aims to model and evaluate the pore pressure gradient and fracture gradient using an integrated approach in the El Morgan oil field in the Gulf of Suez, and investigate the mechanisms for overpressure generation in the basin. The key mechanism identified is disequilibrium compaction.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Energy & Fuels
Zijian Cheng, Haoli Xu, Daqing Wang, Liqiang Zhang, Yue Shi, Zhao Lu, Xiaoning Zhao
Summary: This study analyzed the sedimentary characteristics and evolutionary patterns of Alluvial fan and fluvial deposits in the Neogene Guantao Formation of the Dongying Sag, Bohai Bay Basin. The sand bodies in different deposits were characterized with dense well-net constraints and described using RMS amplitude attribute and Wave Impedance Inversion. The effective reservoir range was predicted based on understanding the oil test data.
Article
Energy & Fuels
Wen Zhao, Sheng He, Yongshi Wang, Xiao Wang, Guanghua Jia, Xiaowen Guo, Yibo Qiu, Jiaxu Chen
Summary: Excess pressure is the main driving force for oil migration in overpressured petroliferous basins. The distribution of excess pressure in the Es4s member of the Dongying Depression was studied using drilling stem test data, well logging data, and seismic velocity data. The results showed that overpressure is widely developed in the area, with a gradual decrease in excess pressure from the center to the edge of each sag. The excess pressure gradient varied in a circular band around the sags. Geochemical evidence indicated that the direction of oil migration indicated by the excess pressure gradient is consistent with the direction indicated by the ratio parameters of carbazole compounds in crude oil samples.
Article
Energy & Fuels
Guoqiang Luan, Chunmei Dong, Karem Azmy, Li-Yun Fu, Chengyan Lin, Lihua Ren, Changying Shi, Jia Li
Summary: The composition of formation waters in the Dongying Depression provides important clues about regional water-rock interactions. Chemical analysis of formation waters from different geological formations reveals two main geochemical facies: the chloride-magnesium facies and the bicarbonate-sodium facies. The salinity and pH of the water show a systematic relationship with ion concentrations, indicating thermodynamic buffering by silicate-carbonate mineral assemblages.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Qiaochu Wang, Dongxia Chen, Xianzhi Gao, Fuwei Wang, Sha Li, Ziye Tian, Wenzhi Lei, Siyuan Chang, Yi Zou
Summary: This study utilized multiple analytical methods to investigate the evolution of abnormal pressure in the Huimin Depression, revealing different evolutionary processes in the Central Deep-Sag Zone and the Northern Tectonic Uplift Belt. The study found that the paleo-pressure in the Central Deep-Sag Zone experienced two rising and two falling stages, transitioning from normal pressure to overpressure, while the paleo-pressure in the Northern Tectonic Uplift Belt experienced one rising and two falling stages, currently characterized by underpressure.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Geosciences, Multidisciplinary
Jinfeng Ren, Litao Xu, Wanzhong Shi, Wei Yang, Ren Wang, Yulin He, Hao Du
Summary: In this study, a shallow zone of overpressure below the sea floor in the deep water area of the Qiongdongnan Basin was discovered and investigated. The generation mechanisms of this shallow overpressure in the South China Sea are not well understood. The vertical distribution of the shallow overpressure was found to vary between the shallow water and deep water areas.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Rui Yang, Sheng He, Xiao Wang, Qinhong Hu, Dongfeng Hu, Jizheng Yi
CANADIAN JOURNAL OF EARTH SCIENCES
(2016)
Article
Geosciences, Multidisciplinary
Xiao Wang, Man Gao, Sheng He, Zhiliang He, Yan Zhou, Ze Tao, Jiankun Zhang, Yi Wang
JOURNAL OF EARTH SCIENCE
(2017)
Article
Energy & Fuels
Jian Gao, Xiao Wang, Sheng He, Xiaowen Guo, Baiqiao Zhang, Xuehui Chen
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2017)
Article
Energy & Fuels
Xiao Wang, Lin Pan, Hon Chung Lau, Ming Zhang, Longlong Li, Qiao Zhou
Article
Energy & Fuels
Xiao Wang, Sheng He, Xiaowen Guo, Baiqiao Zhang, Xuehui Chen
Article
Geosciences, Multidisciplinary
Lin Pan, Stuart J. Jones, Xiao Wang, Wen Guan, Longlong Li
Article
Energy & Fuels
Ahmed Alalimi, Lin Pan, Mohammed A. A. Al-qaness, Ahmed A. Ewees, Xiao Wang, Mohamed Abd Elaziz
OIL & GAS SCIENCE AND TECHNOLOGY-REVUE D IFP ENERGIES NOUVELLES
(2020)
Article
Geochemistry & Geophysics
Xiao Wang, Lin Pan, Keqiang Wu, Longlong Li, Jianyong Xu, Hon Chung Lau
Summary: The solubility of CO2 in water was measured at various temperatures and pressures, showing discrepancies with existing prediction models in HPHT conditions due to the increase of H2O vapor. The experiment data indicates variations in CO2 solubility dependence on temperature and pressure in different pressure-temperature regions.
APPLIED GEOCHEMISTRY
(2021)
Article
Energy & Fuels
Wen Zhao, Sheng He, Yongshi Wang, Xiao Wang, Guanghua Jia, Xiaowen Guo, Yibo Qiu, Jiaxu Chen
Summary: Excess pressure is the main driving force for oil migration in overpressured petroliferous basins. The distribution of excess pressure in the Es4s member of the Dongying Depression was studied using drilling stem test data, well logging data, and seismic velocity data. The results showed that overpressure is widely developed in the area, with a gradual decrease in excess pressure from the center to the edge of each sag. The excess pressure gradient varied in a circular band around the sags. Geochemical evidence indicated that the direction of oil migration indicated by the excess pressure gradient is consistent with the direction indicated by the ratio parameters of carbazole compounds in crude oil samples.
Article
Energy & Fuels
Shuyang Chen, Lin Pan, Xiao Wang, Honggang Liang, Tian Dong
Summary: This paper analyzes the sandbody architecture characteristics of the Cretaceous condensate gas reservoir in Yakela using Monte Carlo simulation, providing a reasonable and efficient estimation of inter-well sandbody distribution. It has guiding significance for similar clastic reservoir modeling and simulation.
Article
Energy & Fuels
Allou Koffi Franck Kouassi, Lin Pan, Xiao Wang, Zhangheng Wang, Alvin K. Mulashani, Faulo James, Mbarouk Shaame, Altaf Hussain, Hadi Hussain, Edwin E. Nyakilla
Summary: The hybrid of VGG-16 and GBDT algorithms is used to accurately predict and generate fracture-vuggy carbonates. It achieves high accuracy on various scales by assessing uncertainty from a small dataset. Seismic wave impedance images are used as input data, and GBDT classifiers (LightGBM and CatBoost) are built based on manual interpretation to predict karst cavities and unconformities. The results show that LightGBM is the best classifier, performing excellently in karst cavity interpretation with F1-scores between 0.87 and 0.94 and micro-G-Means ranging from 0.92 to 0.96. The LightGBM model also outperforms Linear Regression and Multilayer Perceptron in cave prediction. Uncertainty quantification indicates good performance in predicting karst cavities. Therefore, the hybrid VGG16 and GBDT algorithms can efficiently identify geological features in similar reservoirs worldwide.
Article
Energy & Fuels
Wakeel Hussain, Muhsan Ehsan, Lin Pan, Xiao Wang, Muhammad Ali, Shahab Ud Din, Hadi Hussain, Ali Jawad, Shuyang Chen, Honggang Liang, Lixia Liang
Summary: This study evaluated the oil and gas potential of the Cretaceous Yageliemu clastic reservoir in the Yakela gas field in the Tarim Basin, China. Geophysical logs from five wells were used to characterize the petrophysical properties of the interest zones. The results indicate that the gas-bearing zones have favorable properties for reservoir development, including high resistivity, good permeability, and effective porosity.
