Advances in Water Resources最新文献

{"title":"Corrigendum to “A novel analytical model of fluid leakage through an abandoned well” [Advances in Water Resources 185 (2024) 104644]","authors":"Junyuan Zhang, Hongbin Zhan","doi":"10.1016/j.advwatres.2026.105474","DOIUrl":"https://doi.org/10.1016/j.advwatres.2026.105474","url":null,"abstract":"","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"44 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three-phase flow in proppant-packed fracture: In-situ investigation of the effects of saturation history and effective stress","authors":"Maziar Arshadi, Mohammad Piri","doi":"10.1016/j.advwatres.2026.105486","DOIUrl":"https://doi.org/10.1016/j.advwatres.2026.105486","url":null,"abstract":"This study presents a micro-scale experimental investigation of three-phase (oil/brine/gas) flow through a proppant-packed, fractured miniature shale sample. The primary objective was to examine how pore-scale fluid configurations, connectivity, and trapping behavior evolve under varying saturation histories and effective stress conditions. Experiments combined core-flooding with high-resolution x-ray imaging to visualize fluid distributions and measure effective permeability, linking pore-scale fluid configurations to macroscopic transport properties. Initial experiments involved two- and three-phase flow tests, including primary oil drainage, brine-to-oil imbibition, gas injection, oil-to-gas imbibition, and gas-to-oil drainage conducted under a constant effective stress of 500 psi. Subsequent experiments examined simultaneous flow of oil and gas in the presence of brine under progressively increasing stress from 500 to 5,500 psi. The results show that gas invasion formed a pore occupancy configuration in which gas was enveloped by spreading oil layers, promoting residual oil mobilization and recovery through layer drainage and gas-to-oil-to-brine double-displacement events. Increasing oil-to-gas fractional flow (imbibition) enhanced gas fragmentation and trapping through snap-off, disrupting connectivity and limiting the formation of spanning clusters of the fluid, with only 30% of the gas remaining fully connected at a fractional flow of unity. Under the same fractional flow, oil and gas effective permeabilities were 30% lower during oil-to-gas imbibition than gas-to-oil drainage, reflecting increased trapping and phase interference during imbibition and enhanced connectivity and mobility during drainage. Increasing stress from 500 to 5,500 psi reduced the fracture aperture by 10% and absolute permeability by 47%, yet caused a fourfold reduction in effective oil and gas permeabilities. This disproportionate reduction was attributed to stress-induced reorganization of fluid occupancy and phase connectivity delivered through capillary bridging and gas fragmentation. The results demonstrate that changes in gas cluster connectivity and morphology induced by varying saturation history and effective stress strongly influence three-phase relative permeability during reservoir depletion.","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"1 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An unsupervised deep surrogate model integrating with finite difference method for solving parameterized soil water flow equation","authors":"Guanda Zhu,Yan Zhu,Xiaoping Zhang,Lili Ju","doi":"10.1016/j.advwatres.2026.105487","DOIUrl":"https://doi.org/10.1016/j.advwatres.2026.105487","url":null,"abstract":"","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"80 1","pages":"105487"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148895182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"FitSeg: Multi-Mineral Segmentation for Digital Rocks without Manual Labeling","authors":"Zhihao Xing, Jun Yao, Nobuo Maeda, Hai Sun","doi":"10.1016/j.advwatres.2026.105485","DOIUrl":"https://doi.org/10.1016/j.advwatres.2026.105485","url":null,"abstract":"Digital Rock Physics (DRP) provides a cost-effective platform for characterizing porous-media structure and predicting physical properties. Accurate multi-mineral segmentation is essential to DRP, as it directly controls the reliability of downstream simulations. However, existing methods face practical limitations: lack of architecture optimization for digital rocks, dependence on manual labeling and interaction, and failure to segment low-abundance minerals due to class imbalance. To overcome these limitations, we propose FitSeg, a framework for automated multi-mineral segmentation through semi-supervised learning from minimal experimental labels. Through comparative experiments spanning macro-architecture and core operators, we propose a Deformable Convolution U-Net (DCU) network. Experiments demonstrate that DCU surpasses representative Transformer and CNN models, achieving superior segmentation of micro-pores and fine-grained minerals. Furthermore, we develop a semi-supervised strategy that enables joint learning from limited labeled data and abundant unlabeled data. At 5‰ labeling rate, FitSeg improves mean Intersection over Union (mIoU) by 8.26% over fully supervised U-Net++. In the extreme case of only eight annotations (one training mini-batch), FitSeg still outperforms U-Net++ by 3.44% in mIoU while reducing annotation cost by over 90%. Finally, we introduce a dynamic loss to mitigate class imbalance. Visualization and quantitative X-ray fluorescence (XRF) validation confirm that FitSeg reliably segments multiple minerals, even when mineral abundances differ by 2–3 orders of magnitude. FitSeg generalizes from multi-mineral segmentation to zero-shot binary segmentation on external datasets, reducing the permeability estimation error by 26% relative to U-Net++.","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"48 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impacts of sediment-laden density currents on reservoir thermal regime and dynamics revealed by a coupled temperature–sediment–ice model","authors":"Yunxiao Jia, Yimin Pan, Youcai Tuo, Danyang Guo, Lijin Liu, Yun Deng, Jia Li","doi":"10.1016/j.advwatres.2026.105484","DOIUrl":"https://doi.org/10.1016/j.advwatres.2026.105484","url":null,"abstract":"Reservoirs in cold regions with high sediment loads exhibit complex interactions among hydrodynamics, thermal regimes, sediment transport, and ice processes, which remain poorly understood. In this study, an integrated two-dimensional WWL-GMP modeling framework coupling hydrodynamics, non-uniform sediment transport, water temperature, and ice processes is established to investigate the simulated responses of reservoir thermal structure and flow dynamics to sediment-laden inflow. The framework is applied to the Guxian Reservoir in the Yellow River Basin, while its thermal and ice components are evaluated against observations from the hydrologically similar Wanjiazhai Reservoir. The simulations indicate that sediment-laden density-current development is associated with pronounced changes in the reservoir thermal regime. Under the simulated flood-season conditions, high-concentration sediment-laden inflow plunges into the lower water column and is accompanied by upward displacement of colder water and a transition from stable stratification toward a more vertically homogeneous thermal structure. The scenario comparison also indicates differences in simulated discharge water temperature between sediment-laden and sediment-free conditions, with stronger cold-water release during the warming period and higher discharge temperatures during the cooling period, reaching a maximum difference of approximately 4.4 °C. During winter, the model predicts that sediment-laden conditions are associated with differences in surface thermal conditions and ice evolution, including later freeze-up, reduced ice-cover extent, and shorter ice duration. In addition, the simulated density-current periods are associated with stronger vertical mixing and changes in bottom-water renewal and water-age distributions. Overall, the model results suggest that sediment-laden density-current processes can be closely associated with reservoir thermal structure, water renewal, ice evolution, and downstream thermal responses under the simulated high-sediment conditions. These findings provide a modeling-based perspective on coupled sediment-hydrodynamic-thermal-ice interactions in hyper-concentrated reservoirs and their potential implications for reservoir operation and environmental management in cold regions.","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"43 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A MOC-based scheme for numerical analysis of advective-dispersive contaminant transport in a transient water pipeline flow","authors":"Zahreddine Hafsi, Carlo Giudicianni, Enrico Creaco","doi":"10.1016/j.advwatres.2026.105483","DOIUrl":"https://doi.org/10.1016/j.advwatres.2026.105483","url":null,"abstract":"This paper presents a new model for analysing the advection-dispersion of a contaminant in a pipeline under unsteady flow conditions. Compared to other papers in the scientific literature, the analysis focuses on fast transient, rather than steady, quasi-steady or slow transient conditions. The new model uses the method of characteristics (MOC) and the Crank-Nicolson finite difference scheme, to couple flow field with contaminant advection and to model dispersion, respectively. For fast transient analysis, the developed MOC-based scheme accounts for the unsteady friction effect through a simplified acceleration based approach. Firstly, the model is tested against advection and dispersion under steady flow while compared to other numerical schemes. The model’s performance is evaluated in terms of accuracy, computation time and stability. Comparisons with benchmark models and exact solutions prove the effectiveness of the present numerical coupling methodology at preserving the shape of the concentration profile (more than 97%) and its reduced proneness to instability. The model is applied to a challenging test case under fast transient flow conditions. Therefore, numerical diffusion as well as changes in contamination profiles induced by the variation of the flow velocity is emphasized and thoroughly discussed.","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"72 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cycle-Averaged Energy-Dissipation Modeling of Suffusion in Porous Media under Cyclic Hydraulic Forcing","authors":"Yu Xia, Yong Chen","doi":"10.1016/j.advwatres.2026.105482","DOIUrl":"https://doi.org/10.1016/j.advwatres.2026.105482","url":null,"abstract":"Cyclic hydraulic forcing commonly arises in subsurface water systems and engineered porous media exposed to reservoir fluctuations, tidal oscillations, and pumped-storage operation. Under such conditions, suffusion models driven directly by instantaneous hydraulic gradient or shear stress often show limited transferability across loading scenarios. This study develops a cycle-averaged slow-time framework for cumulative fine-particle loss from an energy-dissipation perspective. Under a time-scale separation assumption, the effective cycle-averaged dissipated power is represented by bulk Darcy dissipation through a reference coarse-particle skeleton and migration-related mechanical work associated with the resistance acting on mobilized fine particles. The effective hydraulic conductivity of the evolving complete specimen determines the Darcy velocity, whereas the independently determined reference-skeleton conductivity defines the bulk Darcy resistance. The hydraulic power supplied through the specimen boundary provides the energy-budget constraint for this two-component representation. The migration-distance scale is defined statistically from a constriction-size-distribution-based pass-through probability. The cumulative termination threshold is treated as an operational criterion with an explicit analytical sensitivity, and the uniform throat-size distribution is retained only as a special case. A computable expression for this effective cycle-averaged dissipated power is derived and used to formulate a first-order rate equation for cumulative fine loss under cyclic forcing, together with a practical parameter-identification procedure based on increments of dissipated energy and fine loss within a calibration window. The constant-gradient limit is assessed through a zero-amplitude numerical sequence in which the identified parameters remain unchanged while the hydraulic-input-dependent quantities are recalculated. Published cyclic seepage experiments are used to examine whether the parameters required by the stagewise formulation can be identified from conventional observations. The dimensionless suffusion resistance index is identified from a prescribed calibration window, whereas each stagewise equivalent erosion coefficient is inferred from the fine-loss increment observed in the same stage. Substitution of these identified quantities into the rate equation demonstrates practical stagewise parameter identifiability for the examined dataset. Because the same stagewise observations enter both the identification of each stagewise equivalent erosion coefficient and the subsequent comparison, the resulting curves, normalized root-mean-square error, and coefficient of determination are descriptive in-sample measures and do not constitute model validation or evidence of predictive capability. A local second-order perturbation analysis for small sinusoidal forcing further yields a rectification term for the cycle-averaged shift in cumulative fine lo","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"40 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-order adaptive discontinuous finite elements for the shallow water equations with sub-grid irregular bathymetry","authors":"Luca Arpaia, Giuseppe Orlando, Christian Ferrarin, Luca Bonaventura","doi":"10.1016/j.advwatres.2026.105472","DOIUrl":"https://doi.org/10.1016/j.advwatres.2026.105472","url":null,"abstract":"We present a discontinuous finite element method for the shallow water equations which exploits high-resolution realistic bathymetry data without any regularity assumption, also in the case of high-order discretizations. We prove a number of mathematical properties specific to the proposed method that is well-balanced, mass-conserving, and positivity-preserving under a mild CFL condition also in the presence of wet-dry fronts. The method includes a consistent conservative discretization for passive tracers. We use a high-order Discontinuous Galerkin (DG) method as implemented in the <ce:monospace>deal.II</ce:monospace> library. This environment provides efficient and native parallelization techniques and automatically handles non-conforming meshes to implement adaptive strategies which are tested in a coastal environment. Idealized test cases show the robustness in presence of irregular bathymetries also with under-resolved features at the grid scale. A benchmark with realistic bathymetry and a complex domain shows the potential of the proposed discretization for adaptive simulations of coastal flows.","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"51 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Density-Dependent Flow and its Interactions with Salt–BTEX Transport in Variably Saturated Porous Media","authors":"Arindam Roy, Renu Valsala, Kironmala Chanda, Ranjan Sarukkalige","doi":"10.1016/j.advwatres.2026.105480","DOIUrl":"https://doi.org/10.1016/j.advwatres.2026.105480","url":null,"abstract":"Salinity-induced density variations significantly impact flow dynamics and the migration of petroleum hydrocarbons (PHC). Although density-dependent flow and PHC transport are extensively modeled independently, their coupled interaction remains insufficiently understood, particularly under variably saturated conditions. In this study, a coupled density-dependent flow and multi-component transport model is developed to simulate the impact of salinity on BTEX (benzene, toluene, ethylbenzene and xylene) migration. The influence of density-dependent flow is analyzed across various soil textures, salt concentrations and source strengths under variable saturated conditions. Vertical flow is simulated in one-dimensional domain, while transport equations are solved in two dimensions. The equations are discretized using fully-implicit finite difference scheme with nonlinearities addressed using Picard iteration. The discretized equations for flow and transport are solved using Tridiagonal Matrix Algorithm (TDMA) and Bi-Conjugate Gradient Stabilized method (BiCGSTAB). Model results show that density variation significantly affects flow dynamics and BTEX transport in sand and loam and has negligible effect in clay. At an inlet salt concentration of 300 g/L, density variations increase Darcy flux by approximately 19% in sand and 17% in loam after 40 days. Density effects increase BTEX dissolution rate and enhance the migration depth of BTEX by 10 - 40% in sand. The impact of salinity on BTEX transport intensified with the increase in the BTEX source zone strength. BTEX transport is found to be sensitive to soil hydraulic parameters and biodegradation kinetics. These findings highlight the significance of considering the density-dependent flow while predicting BTEX transport under salt co-transport scenarios.","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"26 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148884814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of small-scale heterogeneity and its impact on saturation, relative permeability and trapping of CO2: Case study from the Otway International Test Centre","authors":"Catherine Spurin, Catherine Callas, Mitch Allison, Laura Gomez, David Bason, Sally M. Benson","doi":"10.1016/j.advwatres.2026.105465","DOIUrl":"https://doi.org/10.1016/j.advwatres.2026.105465","url":null,"abstract":"CO<ce:inf loc=\"post\">2</ce:inf> injection into subsurface reservoirs provides a long-term strategy for mitigating anthropogenic emissions. This study presents an experimental investigation of the multiphase flow behaviour of CO<ce:inf loc=\"post\">2</ce:inf> and water in core samples obtained from the Otway International Test Centre (OITC), Australia, where 10,000 tonnes of a CO<ce:inf loc=\"post\">2</ce:inf>-rich mixture have been injected into a reservoir at a depth of approximately 1500 m. The reservoir comprises a delta-front depositional system characterized by distributary channel, mouth-bar, and carbonate cemented facies. Both vertically and horizontally drilled core samples were investigated from the site (excluding the carbonate cemented regions). Drainage relative permeability and trapping efficiency were measured at 50 °C and 8 MPa pore pressure using the steady-state method. Fluid distributions were observed using X-ray computed tomography. For these samples, small-scale heterogeneities heavily influenced core-scale flow behaviour. Core-averaged CO<ce:inf loc=\"post\">2</ce:inf> saturations remained low and exhibited minimal variation across different fractional flows due to channelling of the CO<ce:inf loc=\"post\">2</ce:inf>. A wide range of trapping efficiencies were observed, with trapping efficiency inversely correlated to permeability. This suggests that regions with higher injectivity would have lower trapping efficiencies for the CO<ce:inf loc=\"post\">2</ce:inf>. Samples extracted from similar regions displayed distinct trapping efficiencies and relative permeability curves. However, all relative permeability curves were characterized by steep water relative permeability and low CO<ce:inf loc=\"post\">2</ce:inf> saturations. The absolute permeability and relative permeability in the vertically drilled samples were distinct from neighbouring horizontally drilled samples. This underscores the challenge of generalizing core-scale results in highly heterogeneous formations and the difficulties of upscaling these results to the field scale.","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"8 1","pages":""},"PeriodicalIF":4.7,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148884815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}