Article
Energy & Fuels
Wei Zhang, Qihong Feng, Sen Wang, Jiyuan Zhang, Zhehui Jin, Tian Xia, Xiangdong Xing, Peng Lv
Summary: Hydraulic fracturing is an effective method for developing shale oil reservoirs, but the fluid flow behaviors in shale are still unclear due to the nanoscale pores and heterogeneities in mineral types and wettability. In this study, the pore network modeling method was used to investigate the single-phase and oil-water two-phase flow behaviors, considering the nanoconfinement effects, wettability, and pore space characteristics in shale. Results showed that the total organic content and wettability are the primary factors affecting single-phase flow, and slip effect enhances the flow capacities of water and oil. The wettability effect on two-phase flow was not as notable as that on single-phase flow, and oil-water two-phase relative permeability curves are significantly affected by the total organic content.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Review
Thermodynamics
Li Chen, An He, Jianlin Zhao, Qinjun Kang, Zeng-Yao Li, Jan Carmeliet, Naoki Shikazono, Wen-Quan Tao
Summary: This review summarizes the recent advances and challenges in pore-scale modeling, discussing its practical applications in geoscience, polymer exchange membrane fuel cells, and solid oxide fuel cells. Notable results from pore-scale modeling are presented, while the challenges facing the development of pore-scale models are also discussed.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2022)
Article
Chemistry, Physical
Shiyu Xu, Mahmood Reza Yassin, Hassan Dehghanpour, Christen Kolbeck
Summary: This study investigates the hydrocarbon potential of calcareous shale plugs by examining their wettability and pore structure. The results show that plugs with low maturity level in the early-oil window have low oil potentials despite their TOC-rich characteristics.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Multidisciplinary Sciences
Zehai Xu, Yufan Zhang, Xu Zhang, Qin Meng, Yujie Zhu, Chong Shen, Yinghua Lu, Guoliang Zhang, Congjie Gao
Summary: The study presents a method to synthesize dual metal-coordinated ultrathin nanoporous graphene nanofilms by tailoring well-aligned nanocrystals as building blocks on heteroatom-doped GO nanosheets, which allows for the controlled structures of the membranes.
Article
Geosciences, Multidisciplinary
Zhixing Yi, Shouzhi Hu, Songtao Wu, Jingsheng Ma, Jian Gao, Yahui Yuan
Summary: Most pore network models designed for sandstone may not be applicable for shale due to the presence of nanopores and non-Darcy effects. A new pore network model accounting for these effects was proposed, providing a more accurate solution for shale gas flow simulations. Experiments on a shale sample showed differences in network structures between the new model (APN) and traditional models (IPN).
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Kun Zhang, Zhenxue Jiang, Yan Song, Chengzao Jia, Xuejiao Yuan, Xueying Wang, Liwen Zhang, Fengli Han, Yiming Yang, Yao Zeng, Pei Liu, Liangyi Tang, Xuecheng Chen, Zehao Zheng
Summary: This study focuses on the analysis of major hydrocarbon-bearing basins in China that are rich in shale with terrestrial facies, with a particular emphasis on the Jurassic Lianggaoshan Formation in the Southeast Sichuan Basin. The study investigates the pore connectivity, pore wettability, and shale oil mobility of different shale lithofacies using various analytical techniques. The results show that organic-rich clay shale and mixed shale have good pore connectivity, while organic matter-bearing clay shale has moderate connectivity. The wettability and mobile oil saturation also vary among different lithofacies.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Weihang Zhang, Rui Yang, Zhiliang He, Hanyong Bao, Hui Yu, Shuling Xiong, Yuanjia Han, Qinhong Hu, Sheng He
Summary: This study investigates the influence of mineral composition, pore structure, and extractable organic components on the wettability of shale. The results demonstrate that shale with different lithofacies have different wettability characteristics, and minerals and pore types play a significant role in wettability alteration.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Mechanics
Tao Zhang, Liehui Zhang, Yulong Zhao, Ruihan Zhang, Dongxu Zhang, Xiao He, Feng Ge, Jianfa Wu, Farzam Javadpour
Summary: This study investigates the gas-water transient imbibition and drainage processes in two-dimensional nanoporous media using a lattice Boltzmann model. Sensitivity analyses were performed on fluid and rock characteristics, revealing the fingering nature of the nonwetting phase. The study provides insights into the microscopic ganglia dynamics of gas-water two-phase flow in nanoporous media.
Article
Engineering, Civil
Guanglei Zhang, Mohamed Regaieg, Martin J. Blunt, Branko Bijeljic
Summary: A porous plate technique was developed to measure capillary pressure in carbonate rock samples. The study showed that in mixed-wet media, displacement of oil from micro-porosity can occur at much lower capillary pressures than previously estimated.
JOURNAL OF HYDROLOGY
(2023)
Article
Chemistry, Multidisciplinary
Jinlei Yang, Bin Tu, Munan Fang, Lianshan Li, Zhiyong Tang
Summary: This Perspective discusses the strong interactions between adjacent pores in an ordered nanopore array of covalent organic framework-based monolayers, highlighting their impact on ion transport and showcasing the exciting features of porous nanostructures.
Article
Geosciences, Multidisciplinary
N. Yin, Q. H. Hu, H. M. Liu, Y. S. Du, X. C. Zhu, M. M. Meng
Summary: This study characterized the pore structure and wettability of shale samples with carbonate interlayers from the Shahejie Formation in East China. The results showed that the shale had a layered structure and smaller pores compared to marine shale. The shale was lipophilic and moderately hydrophilic at millimeter scales. The NMR analysis revealed that the pore structure and wettability of the shale could be classified into three stages.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Yadong Zhou, Zhanlei Wang, Dongfeng Hu, Zhihong Wei, Xiangfeng Wei, Ruobing Liu, Daojun Wang, Yuqiang Jiang
Summary: By studying Dongyuemiao lacustrine shale in the Eastern Sichuan Basin, it is found that organic pores consist of primary pores within plant debris and secondary pores within bitumen. Inorganic pores are composed of intraparticle pores within calcite particles, intercrystalline pores between pyrite crystals, and interparticle pores between different minerals. The 4th Section lacustrine shale of Dongyuemiao Member has the best pore structure, with high organic pore proportion, large amounts of gas adsorption, and parallel plate-shaped pore morphology. Micropores are the main contributors to the pore volume and surface area of Dongyuemiao lacustrine shale. The enrichment of organic matter positively affects the formation of micropores and has no influence on the mesopore-macropore. Quartz does not significantly affect the nanoscale pore formation. The intraparticle pores within calcite particles constitute part of the mesopore-macropore but not micropores. Clay minerals are conducive to the formation of micropores but play a negative role in the formation of the mesopore-macropore.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Jeremie Berthonneau, Olivier Grauby, Isabelle C. Jolivet, Francois Gelin, Nicolas Chanut, Yann Magnin, Roland J-M Pellenq, Daniel Ferry
Summary: An experimental procedure was proposed to study the interplay between the chemical evolution and structural properties of the organic porous network at the nanometer scale. Source rock samples were physically reconstructed to measure key parameters, showing a general increase of specific pore volume with thermal maturation, which controls the topological features depicting increasing accessibility to alkane molecules. This highlights the role of electron tomography in studying complex porous media.
Article
Energy & Fuels
Mahsa Shirazi, Mohsen Masihi, Hassan Mahani, Yousef Tamsilian
Summary: This study artificially created surfaces that simulate natural porous structures on flat glass substrates using various methods. The impact of high temperature on surface roughness and topography was also investigated. Laser ablation resulted in a homogenous distribution of roughness, while HF etching led to a wide range of roughness values that varied with exposure time. Applying etching cream reduced roughness. No significant changes in chemical composition were observed for the etched surfaces.
Article
Energy & Fuels
Wenhui Song, Jun Yao, Kai Zhang, Yongfei Yang, Hai Sun, Zijie Wang
Summary: This paper presents a pore network based model that takes into account multiple factors affecting the mass transport of multicomponent hydrocarbons in nanoporous shale, and provides a detailed understanding of the thermodynamic transport mechanisms of multicomponent hydrocarbons. The study reveals that the transport behavior of multicomponent hydrocarbons is governed by both fluid rheology and pore size.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Materials Science, Ceramics
Sharafudeen Kaniyarakkal, Kesavulu Culala Rajasekharaudayar, Rajesh Dagupati, Yang Li, Zhi Chen, Vijayakumar Sadasivan Nair, Shiju Edappadikkunnummal
Summary: A series of glasses with varying concentrations of Ho2O3 and Yb2O3 were prepared and analyzed for their absorption spectra, emission spectra, and decay times. The study revealed that the energy transfer process from Ho3+ to Yb3+ ions affected the emission intensities in both down conversion and up-conversion processes. The influence of Yb3+ concentration on the up-conversion process was also studied, showing significant improvement in green and red emission intensities with increasing Yb3+ ions concentration.
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO
(2023)
Article
Chemistry, Inorganic & Nuclear
Zurong Liao, Chaojie Li, Jiyou Zhong, Yang Li, Weiren Zhao
Summary: A high-performance Cr3+-activated garnet Ln(3)ScInGa(3)O(12):Cr3+ phosphor with emission peak ranging from 726 to 822 nm has been developed, possessing high quantum efficiency, absorption efficiency, and thermal stability. The optimized phosphor coated on a 455 nm LED chip can generate broadband near-infrared (NIR) emission.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Jinlei Wang, Yongfei Yang, Shaobin Cai, Jun Yao, Quan Xie
Summary: Hydrogen energy has great potential as a clean fuel in the energy transition. Large-scale hydrogen storage is crucial for building a complete hydrogen energy supply chain. Underground hydrogen storage in saline aquifers has been considered as an important method for achieving large-scale hydrogen storage. The study investigates hydrogen transport in a sandstone porous media at different wetting conditions, and reveals the impact of wetting on hydrogen storage and extraction processes. The findings suggest that storing hydrogen in depleted gas reservoirs under irreducible water saturation would pose less risks for hydrogen trapping during the extraction process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Gloire Imani, Lei Zhang, Chao Xu, Hai Sun, Yongfei Yang, Jun Yao
Summary: The trapping mechanism of drops due to wettability contrast in porous materials was studied. Three different motion regimes were identified, and their transitions were found to be dependent on the Marangoni number and viscosity ratio.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Xiuping Gao, Weisheng Liu, Gang Han, Xiaohui Jiang, Lingyi Li, Ping Zhou, Shasha Wang, Tao Liu, Jinyuan Zhou, Haodong Zhang, Kai Huang, Yang Li, Min Wang, Zhiwen Jin, Erqing Xie
Summary: In this study, persistent luminescence nanoparticle scintillators (PLNS) were developed for X-ray-induced photodynamic therapy (X-PDT). The PLNS of SiO2@Zn2SiO4:Mn2+, Yb3+, Li+ exhibited excellent X-ray and UV-excited persistent luminescence, as well as tunable emission spectra. By loading a photosensitizer, effective energy transfer was observed even after removing X-ray irradiation. The dose of X-ray for X-PDT was significantly reduced using the PLNS, indicating their great potential for X-PDT applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Keli Ding, Zengding Wang, Huazheng Duan, Lei Zhang, Wenhui Song, Hai Sun, Yongfei Yang, Jun Yao, Junjie Zhong
Summary: The effect of surface roughness on CO2 displacement in nanometer pores of shale was studied using direct numerical simulation. It was found that a rough surface results in shrinkage of the CO2 displacement path and slows down the overall displacement rate. The pinch-point effect in a rough nanochannel also impedes the smooth progression of the interface contact line, causing periodic velocity fluctuation that further hinders CO2 displacement.
Article
Optics
Jianlin Zhang, Weiren Zhao, Xiaoli Zhang, Yang Li, Wei Zhang, HongLi Wen, Jiyou Zhong
Summary: In this work, a series of double-perovskite-type Ca2InTaO6:Cr3+ NIR phosphors were successfully prepared. The obtained phosphor exhibits an ultra-broadband emission covering 700-1300 nm with peak wavelength located at 880 nm. The PLQY and absorption efficiency of this phosphor are determined to be 33.6% and 30.6%, respectively, indicating an excellent efficiency within this emission range.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Analytical
P. Diana, Subramanian Saravanakumar, D. Sivaganesh, V. Sivakumar, Yang Li, S. Sebastian, Ji-Man Kim, Padmanathan Karthick Kannan, L. Sangeetha, Vijayendran K. K. Praneeth
Summary: The effect of calcination temperature on the structural and thermoluminescent properties of Zn2SiO4 materials was investigated. Zn2SiO4 was prepared using a hydrothermal route and calcinated at different temperatures. The TL data of all samples showed two peaks, with the Zn2SiO4 sample calcinated at 900 degrees C exhibiting the optimal TL intensity. This material could be used for high-temperature dosimetry applications.
Article
Mechanics
Hai Sun, Liang Zhou, Dongyan Fan, Lei Zhang, Yongfei Yang, Kai Zhang, Jun Yao
Summary: This study established a workflow for directly predicting permeability from images and found that the average permeability with organic distribution was 32.3% higher. A convolutional network model was designed using SE-ResNet structure and attention mechanism to achieve an accuracy of 88.5% in predicting permeability from images.
Article
Chemistry, Multidisciplinary
Huiwang Lian, Wenxia Zhang, Rui Zou, Simin Gu, Rongyi Kuang, Yunfei Zhu, Xinyue Zhang, Chong-Geng Ma, Jing Wang, Yang Li
Summary: This study develops aqueous-based inorganic colloidal halide perovskites with high photoluminescence quantum yield and fabricates a new generation of colloidal perovskite-mediated AbLS. The results demonstrate that halide perovskites have excellent PLQY and colloidal dispersion, making them suitable for use in aqueous solutions. Additionally, the materials exhibit stable luminescent emission at low temperatures and can be customized for operation even in ice below 0 degrees C. Finally, the PAbLS show robust radiation hardness and potential application in high-energy ray radiation detection from every angle of 360 degrees.
ADVANCED MATERIALS
(2023)
Review
Energy & Fuels
Zengding Wang, Keli Ding, Tengyu Liu, Jun Yao, Hai Sun, Yongfei Yang, Lei Zhang, Wenhui Song, Kaiqiang Zhang, Junjie Zhong
Summary: Shale reservoirs, characterized by nanometer pores and ultralow permeability, present a challenge for enhancing shale oil recovery after primary production due to the low injectivity of water. CO2 has emerged as a promising injection fluid for improving shale oil recovery due to its high mobility and mixability with hydrocarbons in porous media. However, the behavior of fluids in the nanometer pores of shale reservoirs differs from conventional reservoirs, necessitating a reevaluation of previous understanding regarding CO2 displacement and sequestration. This review analyzes recent advancements in the interaction of CO2 with reservoir fluids and shale rocks at the microscopic level, discussing phase behavior, mass transfer, and reshaping of CO2-induced mineralization in shale porous media. The limitations and future research directions for studying CO2 injection in shale reservoirs are also discussed, encompassing experimental scope, theoretical analysis, and field application.
Article
Environmental Sciences
Yongfei Yang, Jinlei Wang, Jianzhong Wang, Yingwen Li, Hai Sun, Lei Zhang, Junjie Zhong, Kai Zhang, Jun Yao
Summary: This study investigates the flow and dissolution processes of carbon dioxide (CO2) in underground rock formations using numerical simulations. The results show that the amount of dissolved CO2 depends on its distribution in the rock, rock porosity, permeability, injection rate, and rock wetting level. Understanding these processes is crucial for predicting the effectiveness and safety of CO2 storage.
WATER RESOURCES RESEARCH
(2023)
Article
Energy & Fuels
Liming Zhang, Jinlian Wu, Kai Zhang, Zhongzheng Wang, Xia Yan, Piyang Liu, Qiang Wang, Ling Fan, Jun Yao, Yongfei Yang, Zhigang Yu
Summary: In this study, a novel method based on transfer learning and ViT models is proposed for diagnosing the working conditions of rod pumping systems. By pre-training the ViT model and fine-tuning it with the actual dynagraph card dataset, the training time is significantly reduced and the accuracy of the diagnosis is improved. Compared with other methods, this approach performs well on the problem of different work conditions but graphically similar dynagraph cards.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Shaoan Zhang, Jiawen Zeng, Huacong Ye, Zhenzhang Li, Yang Lv, Liangbin Xiong, Yihua Hu, Yang Li
Summary: Compared to conventional phosphor-converted near-infrared light-emitting diodes (NIR pc-LEDs), near-infrared persistent phosphor-converted LEDs (NIR ppc-LEDs) have broader applications in intelligent security, driverless vehicle technology, and virtual reality. However, the research on NIR ppc-LEDs is limited. In this study, a novel NIR ppc-LED with SrAl12O19: Fe3+, Mg2+, Ti4+ NIR persistent phosphors was designed. The new ppc-LED showed full-spectral responsive sensing ability and improved sensitivity in digital NIR imaging, especially in low-light conditions.
ADVANCED PHOTONICS RESEARCH
(2023)
Article
Mechanics
Gloire Imani, Lei Zhang, Jenny Maweja, Hai Sun, Dongyan Fan, Munezero Ntibahanana, Lei Hou, Yongfei Yang, Jun Yao
Summary: This study investigates droplet dynamics in rough capillary channels through numerical simulations. The results show that, contrary to common observations, roughness actually promotes droplet mobility. Different roughness parameters, such as pillar height and spacing, have varying effects on droplet motion. The findings provide valuable insights for designing droplet flow on complex and rough surfaces, such as microfluidic devices, and optimizing droplet control strategies in enhanced oil recovery methods.