Article
Energy & Fuels
Jincheng Liu, Yan Zhang, Jingqiang Tan
Summary: The Ximing Sandstone-to-No. 9 Coal succession in the Linxing gas field represents a transgressive succession that occurred in the western coast of the late Pennsylvanian North China epeiric sea. It evolved from fluvial channels to tide-dominated estuaries and eventually to wave-dominated barrier lagoons. The deposition changes were influenced by the valley shape, tidal prism, and the presence of a wide seaway without local coastline irregularities.
Article
Energy & Fuels
Chuanqi Tao, Yong Li, Yanbin Wang, Xiaoming Ni, Xiang Wu, Shihu Zhao
Summary: Deep coalbed methane (CBM) has great exploration and development potential, but its commercial development worldwide is limited. The Linxing area, with coals buried approximately 2000m deep, shows significant development potential. Factors controlling deep CBM accumulation, such as reservoir temperature and pressure, coal composition, and gas content, were analyzed.
Article
Polymer Science
Yuchen Wen, Jirui Hou
Summary: Gas flooding and foam flooding are potential technologies for tertiary oil recovery in fractured-vuggy reservoirs. This study established a visualization simulation method from one dimension to three dimensions and conducted experiments to validate its application in fractured-vuggy reservoirs. The experimental results showed that gas flooding has a single flow channel, water flooding has multiple flow channels, and gel foam can uniformly expand in all directions. The EOR mechanisms of gel foam in fractured-vuggy reservoirs include reducing interfacial tension, increasing mobility ratio, selectively plugging high permeability channels, and discontinuous flow. Therefore, water and gas should be injected in the displacement process of fractured-vuggy reservoirs, and gel foam with strong stability and high viscosity is recommended for most injection wells.
Article
Engineering, Environmental
Wenxuan Wang, Lei Lu, Ho Pan Bei, Xiangyang Li, Zeyu Du, Manfred F. Maitz, Nan Huang, Qiufen Tu, Xin Zhao, Zhilu Yang
Summary: This paper introduces a new coating strategy for blood-contacting devices, which immobilizes charged biomolecules and demonstrates high surface charge density and bioactivity retention. The advantages of this strategy in biomolecule functionalization were shown through in vitro and ex vivo experiments.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Yongge Liu, Jian Hou, Zhangxin Chen, Yajie Bai, Haiyang Su, Ermeng Zhao, Guangming Li
Summary: A method to improve the performance of hot water flooding in a hydrate bearing layer has been proposed, which involves staged production and parameter optimization to increase gas production while improving energy efficiency and recovery. Comparison with other methods shows significant improvements in cumulative gas production.
Article
Engineering, Marine
Yan Xie, Jingchun Feng, Liwei Sun, Junwen Wang, Weiqiang Hu, Bo Peng, Yujun Wang, Yi Wang
Summary: Methane leakage is a significant challenge in the exploitation of natural gas hydrates, and the mechanism and controlling factors of methane leakage during the hydrate dissociation process are still unclear. This study developed a coupled simulator that can simulate the exploitation of methane hydrates and simulate methane leakage, providing assistance in developing safe exploitation strategies.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Geological
Guangjun Ji, Qian Wang, Xiaoyuan Zhou, Zizhao Cai, Jixiang Zhu, Yan Lu
Summary: This study develops a method for modeling engineering geological structures using drill data. It accurately reproduces the geometry and distribution of geo-bodies, significantly enhancing geological model building efficiency.
ENGINEERING GEOLOGY
(2023)
Article
Energy & Fuels
Jian Shen, Kexin Li, Hewei Zhang, Khadija Shabbiri, Qiujia Hu, Cong Zhang
Summary: The study collected 56 coal-measure gas samples and found that methane is the main composition, with apparent dry and wet gas coexist characteristics, mainly originating from thermogenic sources. The gas evolution process was observed to have distinct stages.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Xing Li, Kun Zhang, Zhen Li, Youguo Yan, Yijia Yuan, Li Ma, Keyu Xie, Kian Ping Loh
Summary: Nanoporous covalent organic frameworks (COFs) are designed as gas diffusion layers (GDLs) for non-aqueous Li-air batteries, significantly improving their stability and performance. The COF GDLs with tailored pore size and superhydrophobicity can prevent the intrusion of organic electrolytes and moisture, allowing the batteries to have high capacity, fast kinetics, and excellent stability even in humid and diverse atmospheres.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Geochemistry & Geophysics
Yang Liu, Eva E. Stueken, Dongsheng Wang, Xuan Tang, Haikuan Nie, Wei Dang, Jinchuan Zhang
Summary: This study investigates the role of metamorphism in the nitrogen cycle and its impact on shale reservoirs. The results reveal the importance of silicate-bound nitrogen in controlling the formation of N-2-rich gas in shale reservoirs. These N-2-rich rocks may have affected the surface environment through tectonic movement.
Article
Chemistry, Physical
Hassan Moydien, Pieter Levecque, Darija Susac
Summary: This study compares titanium fibre felts and conventional carbon gas diffusion layers as cathode GDLs for PEMFCs, and finds that titanium fibre felts exhibit improved performance and higher air permeability than carbon GDLs across different thicknesses.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
Meng Gao, Chenji Wei, Xiangguo Zhao, Ruijie Huang, Baozhu Li, Jian Yang, Yan Gao, Shuangshuang Liu, Lihui Xiong
Summary: In this study, an intelligent agent model based on the Transformer framework and the multi-objective particle swarm optimization (MOPSO) algorithm was used to optimize gas flooding injection-production parameters in the Middle East. The results showed that the Transformer model had higher accuracy in production prediction compared to traditional methods. The Pareto-based MOPSO algorithm successfully achieved conflicting objectives of maximizing oil production and minimizing the gas-oil ratio.
Article
Energy & Fuels
Jose de Jesus Jesus Montoya-Rosales, Paulina Nunez-Valenzuela, Aura Ontiveros-Valencia, Marcia Morales-Ibarria, Sergio Revah, Elias Razo-Flores
Summary: Bioproduction of short chain carboxylic acids (SCCAs) and medium chain carboxylic acids (MCCAs) is an alternative strategy for upgrading low-value organic waste and reducing fossil fuel consumption. Syngas fermentation and chain elongation offer sustainable pathways for the synthesis of fuels and chemicals. However, the management of microbial communities remains a challenge for efficient production of carboxylic acids.
BIOENERGY RESEARCH
(2023)
Article
Engineering, Marine
Yuhang Gu, Tianle Liu, Jiaxin Sun, Fanfan Qin, Xinxin Cao, Shunbo Qin, Yanlong Li, Ling Zhang, Fulong Ning, Guosheng Jiang
Summary: This study develops a robust production model based on geological data and laboratory tests, and systematically investigates the effects of stress sensitivity, permeability anisotropy, non-uniform hydrate saturation, and permeability distribution on fluid production behaviors in natural gas hydrate reservoirs. The results show that these factors have significant impacts on production performance, especially the non-uniform hydrate saturation and permeability distributions. To achieve reliable predictions, the geological model used in numerical modeling should properly incorporate these factors.
Article
Energy & Fuels
Li Jia, Shoujian Peng, Jiang Xu, Fazhi Yan
Summary: The pressure interference between reservoirs dynamically changes and gradually enhances with an increase in the number of gas-producing layers. The cumulative production flow in coal seams with low reservoir pressure decreases based on a power function, and the production time increases based on the natural logarithm as the number of gas-producing layers increases.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Chemical
Jian Chen, Jiahe Shen, Jie Guo, Geoff Wang
Summary: Vibrating separation is an important method for liquid-solid separation. This study investigated the effect of vibration parameters in separation based on numerical simulation of large-scale liquid bridge breakage. The results showed that separation efficiency increased significantly with the peak acceleration, but growth slowed down after exceeding 1 m/s^2.
Article
Energy & Fuels
Yunsong Yu, Chen Zhang, Chenyang Zhou, Jingfeng Zhang, Zaoxiao Zhang, Geoff G. X. Wang
Summary: The single atom fluid, developed as a new solvent, shows promising performance in capturing CO2, as validated by experiments against the theoretical model. The effects of temperature, pressure, and weight fraction on CO2 capture efficiency are carefully studied and concluded to improve with the use of the advanced solvent.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Chemical
Jian Chen, Peipei Wang, Mengran Li, Jiahe Shen, Tony Howes, Geoff Wang
Summary: Research investigated the rupture distance and shape of liquid bridges formed between surfaces with different roughnesses, as well as the redistribution of liquid after rupture. Experiments on smooth surfaces were conducted and a Volume of Fluid model was established for simulating liquid bridge behaviors on rough surfaces. The study further analyzed the effects of contact angle and roughness on rupture distance, shape, and redistribution of the liquid bridge.
MINERALS ENGINEERING
(2021)
Article
Engineering, Chemical
Xiaomei Wu, Maimoona Sharif, Yunsong Yu, Lei Chen, Zaoxiao Zhang, Geoff Wang
Summary: The research group proposed a new CO2 capture method and conducted detailed investigation on the hydrodynamics inside the tower through simulation and experiments, finding that the dual-nozzle opposed impinging spray method outperformed other methods in absorption performance, contributing to enhancing CO2 absorption efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Energy & Fuels
Chen Zhang, Yunsong Yu, Chenyang Zhou, Jingfeng Zhang, Zaoxiao Zhang, Geoff G. X. Wang
Summary: A new solvent GaInSn/PANI/TEMPO was developed to reduce energy consumption in CO2 capture, with the potential of enhanced CO2 desorption. The study utilized density functional theory models and nanoscale mass and energy transfer models to analyze mass and energy transfer in the system.
GREENHOUSE GASES-SCIENCE AND TECHNOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Wei Ju, Zhaobiao Yang, Yulin Shen, Hui Yang, Geoff Wang, Xiaoli Zhang, Shengyu Wang
Summary: In this study, lateral and vertical variations and mechanisms for pore pressure differences in the Permian coal reservoirs of western Guizhou region are analyzed. The results show that lateral pore pressure differences can be delineated into five zones and there are two main typical patterns vertically. Coal permeability, thermal evolution stage, and hydrocarbon generation contribute little to pore pressure differences, while present-day in-situ stress field, basement structure, and tectonic activity play dominant roles. These findings provide new geological references for coalbed methane exploration and development in the western Guizhou region.
FRONTIERS OF EARTH SCIENCE
(2021)
Article
Engineering, Chemical
Jian Chen, Zhenjiang You, Ognjen Orozovic, Geoff Wang
Summary: This paper developed a model based on the Richards equation to quantitatively analyze the effect of oscillation on water distribution in unsaturated coal and iron ores. The findings suggest that the dynamic potential plays a role in the water distribution and can be applied to optimize the processing of coal and iron ores.
Article
Metallurgy & Metallurgical Engineering
Jian Chen, Dongling Wu, Yichao Hu, Yansong Shen, Geoff Wang
Summary: The wear of tuyere in blast furnaces is a common problem in iron-making production. This study developed a computational fluid dynamics model to simulate the abrasion rate on the tuyere surface considering various factors. The results showed that high temperature and severe abrasion mainly occurred on the top surface of the tuyere, and the abrasive rate was influenced by the high-temperature area.
STEEL RESEARCH INTERNATIONAL
(2022)
Article
Chemistry, Physical
Yichao Hu, Yinxuan Qiu, Jian Chen, Liangyuan Hao, Thomas Edward Rufford, Victor Rudolph, Geoff Wang
Summary: Introducing CO2 electrochemical conversion technology to the iron-making blast furnace reduces CO2 emissions and produces H-2 as a byproduct. By considering different injection positions and operating conditions, the efficiency of H-2 utilization can be increased and coke rate can be decreased. However, increasing the hydrogen injection amount results in higher energy consumption.
Article
Materials Science, Multidisciplinary
Zhe Rong, Hongbo Liu, Peng Zhang, Feng Wang, Geoff Wang, Baojun Zhao, Fengqiu Tang, Xiaodong Ma
Summary: This study investigates the formation mechanisms and evolution of complex inclusions in Ti-Ca deoxidized offshore structural steel. The number density of total inclusions generally decreases during the refining process, except for Ti and Ca addition. The major inclusions identified were CaO-Al2O3-SiO2-(MgO)-TiOx and CaO-Al2O3-SiO2. These inclusions originate from the combination of CaO-SiO2-(MgO) in refining slag or refractory and deoxidization product Al2O3 and TiO2. With the refining process and Ca addition, the composition of these inclusions changes, resulting in the promotion of intragranular acicular ferrite.
Article
Nanoscience & Nanotechnology
Sahil Garg, Mengran Li, Tanveer Hussain, Mohamed Nazmi Idros, Yuming Wu, Xiu Song Zhao, Geoff G. X. Wang, Thomas E. Rufford
Summary: We have developed a new strategy to improve the reactivity and durability of a membrane electrode assembly (MEA)-type electrolyzer for CO2 electrolysis to CO. By modifying the silver catalyst layer with urea, we have successfully promoted electrochemical CO2 reduction (CO2R), relieved limitations of alkali cation transport, and mitigated salt precipitation in the gas diffusion electrode. The urea-modified Ag catalyst exhibited significantly better CO selectivity and energy efficiency than the untreated Ag catalyst, and maintained stable performance over 200 hours. Our work provides an alternative approach to fabricating catalyst interfaces in MEAs, with important implications for CO2 electrolysis and fuel cells.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yuming Wu, Liam Charlesworth, Irving Maglaya, Mohamed Nazmi Idros, Mengran Li, Thomas Burdyny, Geoff Wang, Thomas E. Rufford
Summary: PTFE-embedded GDL can mitigate electrode flooding, increase electrochemical active area, and improve the stable operation time and Faradaic efficiency of CO2 electrolysis to CO.
ACS ENERGY LETTERS
(2022)
Article
Energy & Fuels
Difei Zhao, Yinghai Guo, Geoff Wang, Xin Guan, Xueqing Zhou, Jing Liu
Summary: The influence of high-rank coal's pore characteristics on the physical properties, gas-bearing properties, and exploitation of coal reservoirs is becoming more prominent. This research analyzed the structure and fractal characteristics of reservoir pores in high-rank coal samples and established a natural classification system to describe the relationship between pore types and gas occurrence and transport mechanisms.
Article
Engineering, Chemical
Chen Zhang, Xinhua Xie, Yuan Li, Teng Zhang, Pengfei Ma, Yunsong Yu, Geoff Wang, Yongzhi Zhao
Summary: This work proposes solutions to resolve catalyst deactivation caused by fly ash in SCR denitration systems using a deflector at the economizer outlet and an ash blocking device at the ash hopper outlet. New integrated models are developed to analyze the gas and solid flow field in a SCR reactor, and have been validated by particle image velocimetry experiment. The study finds that the use of curved deflectors effectively improves the distribution of fly ash and shows the best rectification effect.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Chen Zhang, Chenyang Zhou, Yuan Li, Yunsong Yu, Jingfeng Zhang, Zaoxiao Zhang, Geoff Wang
Summary: New solvents are being explored as effective methods for enhancing reaction rates and reducing reaction energy barriers. The traditional approach for developing new solvents has reached a dead end, leading to the design of a breakthrough technique involving single atom solutions. Experiments have demonstrated the presence of single atoms in the solutions and their charge-producing effects, while a density functional theory model has been used to analyze microscale characteristics. This method has been applied to carbon dioxide capture, resulting in intensified CO2 desorption rates in the single atom solution system by controlling the reaction energy barrier. The results indicate that single atom solutions can generate a maximum voltage of 2.12 V and effectively utilize substantial waste heat below 373 K, contributing to near zero energy consumption.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Geosciences, Multidisciplinary
Weijiao Ma, Jinbu Li, Min Wang
Summary: The petroleum resource assessment obtained from laboratory tests on old core samples tends to underestimate the in situ resources. This study investigates the hydrocarbon loss and restoration by comparing preserved and exposed core samples. It is found that previous studies have severely underestimated the in situ hydrocarbon potential due to factors such as sample crushing and crucible waiting. A new restoration model is proposed to compensate for these losses.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Shaoyun Chen, Yongqiang Yang, Longwei Qiu, Xiaojuan Wang, Erejep Habilaxim
Summary: Quartz cement is an important authigenic mineral in the tight sandstones of the Shaximiao Formation in the Sichuan Basin. This study analyzed the silicon sources of the quartz cement using mineralogical, fluid inclusion, and geochemical data. The results showed that smectite alteration and dissolution of aluminosilicate minerals were the primary sources of silicon for quartz cementation. Contributions from volcanic material hydrolysis and pressure solution were relatively minor. The presence of chlorite films inhibited the development of quartz overgrowths and had minimal impact on reservoir quality.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Xing Jian, Ping Guan, Ling Fu, Wei Zhang, Xiaotian Shen, Hanjing Fu, Ling Wang
Summary: This study presents a synthesis of new detrital zircon dating results and published data from the Cenozoic Qaidam basin, revealing the spatiotemporal variation of detrital zircon age populations and supporting models of synchronous deformation in northern Tibet. The study emphasizes the importance of considering textural and sedimentological parameters in zircon provenance interpretations, as well as the need for integrated provenance analysis involving other detritus components.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
A. Peketi, G. Sriram, A. Mazumdar, P. Dewangan, A. Zatale, V. Rajurkar, Gayatri Shirodkar, V. Mahale, V. Yatheesh
Summary: This study investigates 13 submarine seamounts in the southern Andaman volcanic arc and observes evidence of hydrothermal activity in one of the seamounts. The evidence includes plumes rich in dissolved gases, live chemosymbiotic organisms, and the deposition of neoforming minerals. These observations suggest the development of a new hydrothermal field in the least explored Andaman Sea.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Yanxian Zhu, Zhiliang He, Xiaowen Guo, Long Li, Sheng He, Jian Gao, Shuangjian Li, Huili Li
Summary: This study investigates the fluid evolution history of the hydrothermal dolomite reservoir in the Middle Permian Maokou Formation in the Sichuan Basin. The results reveal the diagenetic sequences, mineral origins, salinity history, and pressure evolution using various analytical techniques. The findings provide important insights into the gas charge, escape, and preservation conditions of the reservoir.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Rafaella de Carvalho Antunes, Julia Campos Guerrero, Ricardo Jorge Jahnert
Summary: This study presents a detailed sedimentary model and identifies various sedimentary facies associations in the coquina deposits of the Itapema Formation in the offshore pre-salt Buzios Field of the Santos Basin. These facies associations were primarily influenced by waves and currents and reflect a complex depositional system.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Kang Meng, Tongwei Zhang, Deyong Shao, Xiuyan Liu, Hui Song, Heng Peng
Summary: In this study, an integrated method of measuring optical reflectance and Raman spectroscopy is proposed to accurately determine the thermal maturity of Lower Cambrian shales in South China. The results show that this method is reliable and effective, and it has important implications for analyzing overmature shale.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Mohamed A. K. El-Ghali, Olga Shelukhina, Iftikhar Ahmed Abbasi, Mohamed S. H. Moustafa, Osman Salad Hersi, Numair A. Siddiqui, Khalid Al-Ramadan, Abdullah Alqubalee, Abdulwahab Muhammad Bello, Abduljamiu O. Amao
Summary: This study employs an integrated depositional and sequence stratigraphic approach to assess the control of diagenesis on reservoir porosity of a hybrid-energy delta system. The study focuses on the Barik Formation in the Haushi-Huqf region of Central Oman, which represents a highstand system tract of a hybrid-energy delta. The assessments reveal that the reservoir porosity is controlled by various degrees of diagenetic processes, including mechanically infiltrated clays and kaolinitization of silicate grains.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Xiaocan Yu, Chunlian Wang, Hua Huang, Kai Yan
Summary: Oilfield brines are a significant alternative lithium resource. This study investigates the metallogenic characteristics and enrichment process of oilfield brines from the Jianghan Basin, central China using chemical and multi-isotope data. The results suggest that lithium enrichment in these brines is the result of interaction with clastic host rocks and dilution by meteoric water.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Jianghao Qiao, Xiwu Luan, Thanuja D. Raveendrasinghe, Yintao Lu, Guozhang Fan, Xinyuan Wei, Long Jin, Jian Yin, Haozhe Ma, Lushan Jiang
Summary: This study investigates the Tanintharyi passive continental margin in the Andaman Sea and reveals the potential of the Oligocene/Early Miocene carbonate platform in the region as a significant hydrocarbon reservoir. It also examines the influence of changes in sedimentary facies and the tectonic setting of the Andaman Sea on the evolution of pockmarks.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Anastasios Nikitas, Georgios Makrodimitras, Maria V. Triantaphyllou, Nikolaos Pasadakis, Kimon Christanis, Stavros Kalaitzidis, Grigoris Rousakis, Ioannis Panagiotopoulos, Alexandra Gogou, Alexandros Papadopoulos, Efthimios Tartaras, Aristofanis Stefatos
Summary: Due to the lack of deep wells in the broader region, studying mud volcanic deposits can improve the geological understanding of the Mediterranean Ridge. In this study, biostratigraphic and geochemical analyses were performed on mud breccia deposits from five Mud Volcanoes in the central MR. The results indicate the origin of these deposits and provide insights into the source rock potential. Seismic data is also used to determine the distribution of major lithostratigraphic formations.
MARINE AND PETROLEUM GEOLOGY
(2024)
