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| 1 | Strong ozone production at a rural site in the North China Plain: Mixed effects of urban plumes and biogenic emissions显示文摘Regional ozone(O_3) pollution has drawn increasing attention in China over the recent decade, but the contributions from urban pollution and biogenic emissions have not been clearly elucidated. To better understand the formation of the regional O_3 problem in the North China Plain(NCP), intensive field measurements of O_3 and related parameters were conducted at a rural site downwind of Ji'nan, the capital city of Shandong province, in the summer of 2013. Markedly severe O_3 pollution was recorded, with the O_3 mixing ratios exceeding the Chinese national ambient air quality standard on 28 days(a frequency of 78%) and with a maximum hourly value of 198 ppbv. Extensive regional transport of wellprocessed urban plumes to the site was identified. An observation-constrained chemical box model was deployed to evaluate in situ photochemical O_3 production on two episodes.The results show that the in situ formation accounted for approximately 46% of the observed O_3 accumulation, while the remainder(~54%) was contributed by regional transport of the O_3-laden urban plumes. The in situ ozone production was in a mixed controlled regime that reducing either NOx or VOCs would lead to a reduction of ozone formation. Biogenic VOCs played an important role in the local ozone formation. This study demonstrates the significant mixed effects of both anthropogenic pollution from urban zones and biogenic emission in rural areas on the regional O_3 pollution in the NCP region,and may have general applicability in facilitating the understanding of the formation of secondary pollution over China. | Ruihan Zong Xue Yang Liang Wen Caihong Xu Yanhong Zhu Tianshu Chen Lan Yao Liwei Wang Junmei Zhang Lingxiao Yang Xinfeng Wang Min Shao Tong Zhu Likun Xue Wenxing Wang | 2018 | Journal of Environmental Sciences2018，30，9： | 8 |
| 2 | Improvement of thermal conductivities and simulation model for glass fabrics reinforced epoxy laminated composites via introducing hetero-structured BNN-30@BNNS fillers显示文摘Hetero-structured thermally conductive spherical boron nitride and boron nitride nanosheets(BNN-30@BNNS)fillers were prepared via electro static self-assembly method.And the corresponding thermally conductive&electrically insulating BNN-30@BNNS/Si-GFs/E-44 laminated composites were then fabricated via hot compression.BNN-30@BNNS-Ⅲ(fBNN-30/fBNNS,1/2,wt/wt)fillers presented the optimal synergistic improvement effects on the thermal conductivities of epoxy composites.When the mass fraction of BNN-30@BNNS-Ⅲwas 15 wt%,λvalue of the BNN-30@BNNS-Ⅲ/E-44 composites was up to0.61 W m^(-1)K^(-1),increased by 2.8 times compared with pure E-44(λ=0.22 W m^(-1)K^(-1)),also higher than that of the 15 wt%BNN-30/E-44(0.56 W m^(-1)K^(-1)),15 wt%BNNS/E-44(0.42 W m^(-1)K^(-1)),and 15 wt%(BNN-30/BNNS)/E-44(direct blending BNN-30/BNNS hybrid fillers,1/2,wt/wt,0.49 W m^(-1)K^(-1))composites.Theλin-plane(λ//)andλcross-plane(λ_(⊥))of 15 wt%BNN-30@BNNS-Ⅲ/Si-GFs/E-44 laminated composites significantly reached 2.75 W m^(-1)K^(-1)and 1.32 W m^(-1)K^(-1),186.5%and 187.0%higher than those of Si-GFs/E-44 laminated composites(λ//=0.96 W m^(-1)K^(-1)andλ_(⊥)=0.46 W m^(-1)K^(-1)).Established models can well simulate heat transfer efficiency in the BNN-30@BNNS-Ⅲ/Si-GFs/E-44 laminated composites.Under the condition of point heat source,the introduction of BNN-30@BNNS-Ⅲfillers were conducive to accelerating heat flow trans fe r.BNN-30@BNNS-Ⅲ/Si-GFs/E-44 laminated composites also demonstrated outstanding electrical insulating properties(cross-plane withstanding voltage,breakdown strength,surface&volume resistivity of 51.3 kV,23.8 kV mm^(-1),3.7×10^(14)Ω&3.4×10^(14)Ω·cm,favorable mechanical properties(flexural strength of 401.0 MPa and ILSS of 22.3 MPa),excellent dielectric properties(εof 4.92 and tanδof 0.008)and terrific thermal properties(T_(g )of 167.3℃and T_(HRI) of 199.2℃). | Xuetao Shi Ruihan Zhang Kunpeng Ruan Tengbo Ma Yongqiang Guo Junwei Gu | 2021 | Journal of Materials Science & Technology2021，，23： | 8 |
| 3 | Ab initio prediction and characterization of phosphorene-like SiS and SiSe as anode materials for sodium-ion batteries显示文摘In this work, a density functional theory(DFT) based first-principles study is carried out to investigate the potential of phosphorene-like SiS and SiSe monolayers as anode materials for sodium-ion(Na-ion) batteries. Results show that both SiS and SiSe have large adsorption energies towards single Na atom of 0.94 and 0.43 eV, owing to the charge transfers from Na to SiS or SiSe. In addition, it is found that the highest Na concentration for both SiS and SiSe is x = 1 with the chemical formulas of Na SiS and Na SiSe, corresponding to the high theoretical specific capacities for Na storages of 445.6 and 250.4 m Ah g^(-1), respectively. Moreover, Na diffusions are very fast and show strong directional behaviors on SiS and SiSe monolayers, with the energy barriers of only 0.135 and 0.158 eV, lower than those of conventional anode materials for Na-ion batteries such as Na_2Ti_3O_7(0.19 eV) and Na_3Sb(0.21 eV). Finally,although SiS and SiSe show semiconducting behaviors, they transform to metallic states after adsorbing Na atoms, indicating enhanced electrical conductivity during battery cycling. Given these advantages, it is expected that both SiS and SiSe monolayers are promising anode materials for Na-ion batteries, and in principle, other Na-based batteries as well. | Haoran Jiang Tianshou Zhao Yuxun Ren Ruihan Zhang Maochun Wu | 2017 | Science Bulletin2017，62，8： | 6 |
| 4 | A Li-S battery with ultrahigh cycling stability and enhanced rate capability based on novel ZnO yolk-shell sulfur host显示文摘Currently,lithium-sulfur(Li-S)batteries still suffer from fast capacity decay,poor coulombic efficiency(CE)and short cycling lifespan,which result from the severe shuttle effect issue caused by high solubility and rapid diffusion of lithium polysulfides(Li PSs)in organic electrolytes.Here,yolk-shell zinc oxide(YSZn O)spheres are synthesized and for the first time,applied as a host for Li-S batteries to tackle this challenge.The polar Zn O exhibits high chemical anchoring ability toward Li PSs while the unique yolk-shell structure not only provides an additional physical barrier to Li PSs but also enables much more uniform sulfur distribution,thus significantly suppressing Li PSs shuttling effect meanwhile promoting sulfur conversion reactions.As a result,the YS-Zn O enables the Li-S battery to display an initial specific capacity of1355 m Ah g^(-1) and an outstanding capacity retention capability(~89.44%retention rate)even after 500 cycles with the average CE of~99.46%at the current of 0.5 C.By contrast,the capacity of conventional-Zn O-nanoparticles based battery severely decays to 472 m Ah g^(-1) after cycling for 500 times.More impressively,the S/YS-Zn O based Li-S battery can maintain a low decay rate of 0.040%every cycle and high average CE of 98.82%over 1000 cycles at 3 C. | Ruihan Zhang Maochun Wu Xinzhuang Fan Haoran Jiang Tianshou Zhao | 2021 | Journal of Energy Chemistry2021，30，4： | 5 |
| 5 | TiO_2-doped Fe_3O_4 nanoparticles as high-performance Fenton-like catalyst for dye decoloration显示文摘Fenton reaction based on Fe2+-H2O2 system has been widely applied in water remediation, but the obvious drawbacks largely hinder its practical uses. Alternatively, heterogeneous nanomaterials with proper surface modification could be used as Fenton-like catalysts. Surface doping of Ti O2 could concentrate the pollutants surrounding the Fe3O4 catalyst, which might benefit the catalytic performance of Fe3O4. Herein, we reported that Ti O2-doped Fe3O4 nanoparticles(NPs) could be used as high-performance Fenton-like catalyst for dye decoloration in near neutral environment, where the doping of Ti O2 on Fe3O4 surface dramatically improved the catalytic activity of Fe3O4 in Fenton-like reaction. Ti O2-doped Fe3O4 NPs catalyzed the decomposition of H2O2 to oxidize methylene blue without external energy supply, resulting in effective decoloration. Ti O2-doped Fe3O4 NPs showed high catalytic activity under various p H values and even in the presence of radical scavenger. More catalysts and H2O2 would facilitate the decoloration. At higher temperature, the decoloration became faster and more effective. The implication to the environmental applications of Ti O2-doped Fe3O4 NPs is discussed. | YANG ShengTao YANG LiJun LIU XiaoYang XIE JingRu ZHANG XiaoLiang YU BaoWei WU RuiHan LI HongLiang CHEN LingYun LIU JiaHui | 2015 | Science China(Technological Sciences)2015，58，5： | 3 |
| 6 | Anti-NLRP3 inflammasome abietane diterpenoids from Callicarpa bodinieri and their structure elucidation显示文摘Callica rpabodinieri is a Chinese traditional medicine herb with anti-inflammatory activity in clinic.Herein,we report two new 9,10-seco and etherified abietane diterpenoids bodinieric acids J and K(1 and 2) and one known compound(3) isolated from the leaves and twigs of this plant.Their chemical structures were elucidated by detailed spectrometry data analysis and DP4+NMR calculation methods.Hypothetical biosynthetic pathways of 1-3 were preliminarily speculated.Compound 3 inhibited inflammasome activation and exhibited blockage of NLRP3 inflammasome activation at non-cytotoxic concentrations in vitro. | Junbo Gao Xingjie Zhang Kun Shang Weimao Zhong Ruihan Zhang Xiaochang Dai Xiaoli Li Qi Wang Yan Zou Weilie Xiao | 2020 | Chinese Chemical Letters2020，31，2： | 3 |
| 7 | A facile solution processed ZnO@ZnS core–shell nanorods arrays for high-efficiency perovskite solar cells with boosted stability显示文摘Zinc Oxide(ZnO)has been extensively applied as electron transport material(ETM)in perovskite solar cells(PSCs)since the emergence of PSCs.However,some chemisorbed oxygen species on the surface of ZnO can cause the degradation of CH3NH3+(MA^(+))based perovskite.To avoid the destructive effect of ZnO,a facile solution strategy was proposed to produce a ZnS shell around the ZnO nanorods arrays(ZnO-NRs),i.e.ZnO@ZnS core-shell nanorods(ZnO-NRs@ZnS).The ZnO-NRs@ZnS cascade structure can not only facilitate carrier transport,but also enhance the stability of ZnO based PSCs.A power conversion efficiency(PCE)of 20.6%was finally yielded,which is the-state-of-the-art efficiency for PSCs with one-dimensional(1 D)ZnO electron transport materials(ETMs).Moreover,over 90%of the initial efficiency was retained for the unencapsulated device with ZnO-NRs@ZnS ETMs at 85℃for 500 h,demonstrating excellent stability.This work provides a simple and efficient avenue to simultaneously enhance the photovoltaic(PV)performance and stability of 1 D ZnO nanostructure-based PSCs. | Kun Chen Weijian Tang Yu Chen Ruihan Yuan Yinhua Lv Wenjuan Shan Wen-Hua Zhang | 2021 | Journal of Energy Chemistry2021，30，10： | 2 |
| 8 | A Poriferous Nanoflake-Assembled Flower-Like Ni_(5)P_(4) Anode forHigh-Performance Sodium-Ion Batteries显示文摘Sodium-ion batteries(SIBs)have been regarded as one of the most competitive alternatives for lithium-ion batteries(LIBs)due to the abundance of sodium and comparable electrochemical characteristics of sodium to that of lithium.However,while highly desired,developing stable anode materials remains a critical challenge.In this work,the development of a stable anode for SIBs is reported,a poriferous nanoflake-assembled flower-like nickel tetraphosphide(PNAF-NP)with high surface area and typical mesoporous property.Due to the unique structure,the PANF-NP anode exhibits excellent reversible capacity of 648.34mAhg^(-1) at 0.2Ag^(-1) with a Coulombic efficiency of 98.67%,and superior cycling stability at 0.2Ag^(-1) with high retention capacity of 456.34 mAhg^(-1) and average Coulombic efficiency of 99.19%after 300 cycles.Moreover,the high reversible capacity of 614.43,589.49,512.66,and 432.23mAhg^(-1) is achieved at 0.5,1,2,and 5Ag^(-1),respectively,indicating the superior rate capability of the PNAF-NP anode.This work represents a great advancement in the field of SIBs by reporting a high-performance anode material. | Ruihan Zhang Vidhur Raveendran Yining He Andy Yau Austin Chang Cheng Chi Sungyool Bong Feng Cheng Weigang Ma Jun Chen | 2021 | Energy Material Advances2021，，1： | 1 |
| 9 | Unconventional phonon spectra and obstructed edge phonon modes显示文摘Based on the elementary band representations(EBR),many topologically trivial materials are classified as unconventional ones(obstructed atomic limit),where the EBR decomposition for a set of electronic states is not consistent with atomic valenceelectron band representations.In the work,we identify that the unconventional nature can also exist in phonon spectra,where the EBR decomposition for a set of well-separated phonon modes is not consistent with atomic vibration band representations(ABR).The unconventionality has two types:typeⅠis on an empty site;and typeⅡis on an atom site with non-atomic vibration orbitals.The unconventionality is described by the nonzero real-space invariant at the site.Our detailed calculations show that the black phosphorus(BP)has the typeⅠunconventional phonon spectrum,while 1H-Mo Se_(2)has the typeⅡone,although their electronic structures are also unconventional.Accordingly,the obstructed phonon modes are obtained for two types of unconventional phonon spectra. | Ruihan Zhang Haohao Sheng Junze Deng Zhong Fang Zhilong Yang Zhijun Wang | 2024 | Science China(Physics,Mechanics & Astronomy)2024，67，4： | 0 |
| 10 | Toward high-efficiency perovskite solar cells with one-dimensional oriented nanostructured electron transport materials显示文摘The unique advantages of one-dimensional(1D)oriented nanostructures in light-trapping and chargetransport make them competitive candidates in photovoltaic(PV)devices.Since the emergence of perovskite solar cells(PSCs),1D nanostructured electron transport materials(ETMs)have drawn tremendous interest.However,the power conversion efficiencies(PCEs)of these devices have always significantly lagged behind their mesoscopic and planar counterparts.High-efficiency PSCs with 1D ETMs showing efficiency over 22%were just realized in the most recent studies.It yet lacks a comprehensive review covering the development of 1D ETMs and their application in PSCs.We hence timely summarize the advances in 1D ETMs-based solar cells,emphasizing on the fundamental and optimization issues of charge separation and collection ability,and their influence on PV performance.After sketching the classification and requirements for high-efficiency 1D nanostructured solar cells,we highlight the applicability of 1D TiO_(2)nanostructures in PSCs,including nanotubes,nanorods,nanocones,and nanopyramids,and carefully analyze how the electrostatic field affects cell performance.Other kinds of oriented nanostructures,e.g.,ZnO and SnO_(2)ETMs,are also described.Finally,we discuss the challenges and propose some potential strategies to further boost device performance.This review provides a broad range of valuable work in this fast-developing field,which we hope will stimulate research enthusiasm to push PSCs to an unprecedented level. | Yinhua Lv Bing Cai Ruihan Yuan Yihui Wu Quinn Qiao Wen-Hua Zhang | 2023 | Journal of Energy Chemistry2023，，7： | 0 |
| 11 | Complex adaptive system theory,agent-based modeling,and simulation in dominant technology formation显示文摘Dominant technology formation is the key for the hightech industry to“cross the chasm”and gain an established foothold in the market(and hence disrupt the regime).Therefore,a stimulus-response model is proposed to investigate the dominant technology by exploring its formation process and mechanism.Specifically,based on complex adaptive system theory and the basic stimulus-response model,we use a combination of agent-based modeling and system dynamics modeling to capture the interactions between dominant technology and the socio-technical landscape.The results indicate the following:(i)The dynamic interaction is“stimulus-reaction-selection”,which promotes the dominant technology’s formation.(ii)The dominant technology’s formation can be described as a dynamic process in which the adaptation intensity of technology standards increases continuously until it becomes the leading technology under the dual action of internal and external mechanisms.(iii)The dominant technology’s formation in the high-tech industry is influenced by learning ability,the number of adopting users and adaptability.Therein,a“critical scale”of learning ability exists to promote the formation of leading technology:a large number of adopting users can promote the dominant technology’s formation by influencing the adaptive response of technology standards to the socio-technical landscape and the choice of technology standards by the socio-technical landscape.There is a minimum threshold and a maximum threshold for the role of adaptability in the dominant technology’s formation.(iv)The socio-technical landscape can promote the leading technology’s shaping in the high-tech industry,and different elements have different effects.This study promotes research on the formation mechanism of dominant technology in the high-tech industry,presents new perspectives and methods for researchers,and provides essential enlightenment for managers to formulate technology strategies. | ZHANG Ruihan SUN Bing | 2024 | Journal of Systems Engineering and Electronics2024，35，1： | 0 |
| 12 | Large Spin Hall Conductivity and Excellent Hydrogen Evolution Reaction Activity in Unconventional PtTe1.75 Monolayer显示文摘Two-dimensional(2D)materials have gained lots of attention due to the potential applications.In this work,we propose that based on first-principles calculations,the(2×2)patterned PtTe_(2)monolayer with kagome lattice formed by the well-ordered Te vacancy(PtTe_(1.75))hosts large and tunable spin Hall conductivity(SHC)and excellent hydrogen evolution reaction(HER)activity.The unconventional nature relies on the A1@1b band representation of the highest valence band without spin–orbit coupling(SOC).The large SHC comes from the Rashba SOC in the noncentrosymmetric structure induced by the Te vacancy.Even though it has a metallic SOC band structure,theℤ_(2)invariant is well defined because of the existence of the direct bandgap and is computed to be nontrivial.The calculated SHC is as large as 1.25×10^(3)h/e(Ωcm)^(−1)at the Fermi level(EF).By tuning the chemical potential from EF−0.3 to EF+0.3 eV,it varies rapidly and monotonically from−1.2×10^(3)to 3.1×10^(3)h/e(Ωcm)^(−1)In addition,we also find that the Te vacancy in the patterned monolayer can induce excellent HER activity.Our results not only offer a new idea to search 2D materials with large SHC,i.e.,by introducing inversion–symmetry breaking vacancies in large SOC systems,but also provide a feasible system with tunable SHC(by applying gate voltage)and excellent HER activity. | Dexi Shao Junze Deng Haohao Sheng Ruihan Zhang Hongming Weng Zhong Fang Xing-Qiu Chen Yan Sun Zhijun Wang | 2023 | Research2023，，3： | 0 |
| 13 | Cucurbit[6]uril-based supramolecular frameworks assembled via the outer surface interaction of cucurbit[n]urils显示文摘Curcurbit[n]uril(Q[n])-based supramolecular frameworks(QSFs) constructed from the outer surface interaction of Q[n]s(OSIQ) have the characteristic of simplicity,diversity and modulability.Their simplicity is reflected in their simple composition and preparation methods used for QSFs.The diversity of supramolecular organic frameworks(SOFs) is reflected in the synthesis methods and structural characteristics of the as-obtained QSFs,as well as the variety of structural directing agents and basic building blocks used to prepare QSFs.The modulability is reflected by the controllable channel size in the QSFs,which can be adjusted using different sizes of Q[n]s.In this work,the first re ported cucurbituril Q[6]was selected as the basic building block and three Q[6]-based su p ramolecular frameworks were obtained from aqueous HCl solutions in the presence of [CdCl_(4)]^(2-)respectively.The OSIQs are the main driving forces for the formation of these frameworks.This study shows the diversity of the QSFs. | Chao Liu Ruihan Gao Yunqian Zhang Qianjiang Zhu Zhu Tao | 2021 | Chinese Chemical Letters2021，32，1： | 0 |
| 14 | Optimal Error Estimates of the Semi-Discrete Local Discontinuous Galerkin Method and Exponential Time Differencing Schemes for the Thin Film Epitaxy Problem without Slope Selection显示文摘In this paper,we prove the optimal error estimates in L2 norm of the semidiscrete local discontinuous Galerkin(LDG)method for the thin film epitaxy problem without slope selection.To relax the severe time step restriction of explicit time marching methods,we employ a class of exponential time differencing(ETD)schemes for time integration,which is based on a linear convex splitting principle.Numerical experiments of the accuracy and long time simulations are given to show the efficiency and capability of the proposed numerical schemes. | Danni Zhang Ruihan Guo | 2023 | Advances in Applied Mathematics and Mechanics2023，15，3： | 0 |
| 15 | Simulation study of hydrogen sulfide removal in underground gas storage converted from the multilayered sour gas field显示文摘A simulation study was carried out to investigate the temporal evolution of H_(2)S in the Huangcaoxia underground gas storage (UGS), which is converted from a depleted sulfur-containing gas field. Based on the rock and fluid properties of the Huangcaoxia gas field, a multilayered model was built. The upper layer Jia-2 contains a high concentration of H_(2)S (27.2 g/m^(3)), and the lower layer Jia-1 contains a low concentration of H_(2)S (14.0 mg/m^(3)). There is also a low-permeability interlayer between Jia-1 and Jia-2. The multi-component fluid characterizations for Jia-1 and Jia-2 were implemented separately using the Peng-Robinson equation of state in order to perform the compositional simulation. The H_(2)S concentration gradually increased in a single cycle and peaked at the end of the production season. The peak H_(2)S concentration in each cycle showed a decreasing trend when the recovery factor (RF) of the gas field was lower than 70%. When the RF was above 70%, the peak H_(2)S concentration increased first and then decreased. A higher reservoir RF, a higher maximum working pressure, and a higher working gas ratio will lead to a higher H_(2)S removal efficiency. Similar to developing multi-layered petroleum fields, the operation of multilayered gas storage can also be divided into multi-layer commingled operation and independent operation for different layers. When the two layers are combined to build the storage, the sweet gas produced from Jia-1 can spontaneously mix with the sour gas produced from Jia-2 within the wellbore, which can significantly reduce the overall H_(2)S concentration in the wellstream. When the working gas volume is set constant, the allocation ratio between the two layers has little effect on the H_(2)S removal. After nine cycles, the produced gas’s H_(2)S concentration can be lowered to 20 mg/m^(3). Our study recommends combining the Jia-2 and Jia-1 layers to build the Huangcaoxia underground gas storage. This plan can quickly reduce the H_(2)S concentration of the produced gas to 20 mg/m^(3), thus meeting the gas export standards as well as the HSE (Health, Safety, and Environment) requirements in the field. This study helps the engineers understand the H_(2)S removal for sulfur-containing UGS as well as provides technical guidelines for converting other multilayered sour gas fields into underground storage sites. | Yi Yang Longxin Li Xia Wang Nan Qin Ruihan Zhang Yulong Zhao Ye Tian | 2023 | International Journal of Coal Science & Technology2023，10，5： | 0 |
| 16 | The Analysis of the Correlation between SPT and CPT Based on CNN-GA and Liquefaction Discrimination Research显示文摘The objective of this study is to investigate themethods for soil liquefaction discrimination. Typically, predicting soilliquefaction potential involves conducting the standard penetration test (SPT), which requires field testing and canbe time-consuming and labor-intensive. In contrast, the cone penetration test (CPT) provides a more convenientmethod and offers detailed and continuous information about soil layers. In this study, the feature matrix based onCPT data is proposed to predict the standard penetration test blow count N. The featurematrix comprises the CPTcharacteristic parameters at specific depths, such as tip resistance qc, sleeve resistance f s, and depth H. To fuse thefeatures on the matrix, the convolutional neural network (CNN) is employed for feature extraction. Additionally,Genetic Algorithm (GA) is utilized to obtain the best combination of convolutional kernels and the number ofneurons. The study evaluated the robustness of the proposed model using multiple engineering field data sets.Results demonstrated that the proposed model outperformed conventional methods in predicting N values forvarious soil categories, including sandy silt, silty sand, and clayey silt. Finally, the proposed model was employedfor liquefaction discrimination. The liquefaction discrimination based on the predicted N values was comparedwith the measured N values, and the results showed that the discrimination results were in 75% agreement. Thestudy has important practical application value for foundation liquefaction engineering. Also, the novel methodadopted in this research provides new ideas and methods for research in related fields, which is of great academicsignificance. | Ruihan Bai Feng Shen Zihao Zhao Zhiping Zhang Qisi Yu | 2024 | Computer Modeling in Engineering & Sciences2024，138，2： | 0 |
| 17 | Simulation of the Production Performances of Horizontal Wells with a Fractured Shale Gas Reservoir显示文摘The production performances of a well with a shale gas reservoir displaying a complex fracture network are simulated.In particular,a micro-seismic cloud diagram is used to describe the fracture network,and accordingly,a production model is introduced based on a multi-scale flow mechanism.A finite volume method is then exploited for the integration of the model equations.The effects of apparent permeability,conductivity,Langmuir volume,and bottom hole pressure on gas well production are studied accordingly.The simulation results show that ignoring the micro-scale flow mechanism of the shale gas leads to underestimating the well gas production.It is shown that after ten years of production,the cumulative gas production difference between the two scenarios with and without considering the micro-scale flow mechanisms is 19.5%.The greater the fracture conductivity,the higher the initial gas production of the gas well and the cumulative gas production.The larger the Langmuir volume,the higher the gas production rate and the cumulative gas production.With the reduction of the bottom hole pressure,the cumulative gas production increases,but the growth rate gradually decreases. | Hongsha Xiao Ruihan Zhang Man Chen Cui Jing Shangjun Gao Chao Chen Huiyan Zhao Xin Huang Bo Kang | 2023 | Fluid Dynamics & Materials Processing2023，19，7： | 0 |
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