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Literatura académica sobre el tema "PhreeqC numerical simulations"

Autor: Grafiati
Publicado: 25 de mayo de 2024

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Artículos de revistas sobre el tema "PhreeqC numerical simulations"

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Sedighi, Majid, Hywel R. Thomas, and Philip J. Vardon. "Reactive transport of chemicals in unsaturated soils: numerical model development and verification." Canadian Geotechnical Journal 53, no. 1 (2016): 162–72. http://dx.doi.org/10.1139/cgj-2014-0436.

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This paper presents the development of a numerical model for reactive transport of multicomponent chemicals in unsaturated soils. The model has been developed based on a coupled thermal, hydraulic, chemical, and mechanical (THCM) formulation, and extended by the inclusion of geochemical processes under mixed equilibrium and kinetically controlled reactions in–between the solid, aqueous, and gas phases in soil. This has been achieved by coupling the transport model, COMPASS, with the geochemical model, PHREEQC. Key coupling between the geochemical modelling and the flow of chemicals has been es
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Liu, Bo, Fangyuan Zhao, Jinpeng Xu, and Yueming Qi. "Experimental Investigation and Numerical Simulation of CO2–Brine–Rock Interactions during CO2 Sequestration in a Deep Saline Aquifer." Sustainability 11, no. 2 (2019): 317. http://dx.doi.org/10.3390/su11020317.

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CO2 mineralization is a long-term and secure solution for geological CO2 storage that primarily depends on the CO2–brine–rock interaction during CO2 sequestration in subsurface formations. In this study, lab experiments were conducted to investigate the CO2–brine–rock interaction over short timescales, and numerical simulations were performed to reveal dynamic interactions and equilibrium interactions by applying TOUGHREACT and PHREEQC, respectively. In the experiments, the main ions of HCO3− and Ca2+ were detected in the solution, and calcite dissolution and dawsonite precipitation were obser
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Vu, Phuong Thanh, Chuen-Fa Ni, Wei-Ci Li, I.-Hsien Lee, and Chi-Ping Lin. "Particle-Based Workflow for Modeling Uncertainty of Reactive Transport in 3D Discrete Fracture Networks." Water 11, no. 12 (2019): 2502. http://dx.doi.org/10.3390/w11122502.

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Fractures are major flow paths for solute transport in fractured rocks. Conducting numerical simulations of reactive transport in fractured rocks is a challenging task because of complex fracture connections and the associated nonuniform flows and chemical reactions. The study presents a computational workflow that can approximately simulate flow and reactive transport in complex fractured media. The workflow involves a series of computational processes. Specifically, the workflow employs a simple particle tracking (PT) algorithm to track flow paths in complex 3D discrete fracture networks (DF
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Szabó, Zsuzsanna, Csaba Hegyfalvi, Ágnes Freiler-Nagy, et al. "Geochemical reactions of Na-montmorillonite in dissolved scCO2 in relevance of modeling caprock behavior in CO2 geological storage." Periodica Polytechnica Chemical Engineering 63, no. 2 (2019): 318–27. http://dx.doi.org/10.3311/ppch.12850.

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One of the challenges of the present century is to limit the greenhouse gas emissions for the mitigation of climate change which is possible for example by a transitional technology, CO2 geological storage. Clay minerals are considered to be responsible for the low permeability and sealing capacity of caprocks sealing off stored CO2. However, their reactions are not well understood for complex simulations. This work aims to create a kinetic geochemical model of Na-montmorillonite standard SWy-2 supported by solution and mineral composition results from batch experiments. Such experimentally va
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KLUNK, M. A., S. DASGUPTA, M. DAS, P. R. WANDER, and A. DI CAPUA. "GEOCHEMICAL SPECIATION AND BATCH MODE SIMULATION IN THE CARBONATE DEPOSITIONAL ENVIRONMENTS." Periódico Tchê Química 16, no. 33 (2019): 736–48. http://dx.doi.org/10.52571/ptq.v16.n33.2019.751_periodico33_pgs_736_748.pdf.

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Geochemical modeling has been frequently used to understand and interpret water-rock interactions in sedimentary basins. Thermodynamic data, kinetic parameters, numerical methods, boundary history, and boundary conditions are factors affecting any geochemical modeling system. In the present study, we have attempted to establish a geochemical speciation model by comparing the interaction of formation water and carbonate rock in the carbonate depositional settings of Cambrian successions of Bachu and Tarim area. A comparative study of geochemical speciation has been performed using four differen
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Kempka, Thomas, Svenja Steding, and Michael Kühn. "Verification of TRANSPORT Simulation Environment coupling with PHREEQC for reactive transport modelling." Advances in Geosciences 58 (November 3, 2022): 19–29. http://dx.doi.org/10.5194/adgeo-58-19-2022.

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Abstract. Many types of geologic subsurface utilisation are associated with fluid and heat flow as well as simultaneously occurring chemical reactions. For that reason, reactive transport models are required to understand and reproduce the governing processes. In this regard, reactive transport codes must be highly flexible to cover a wide range of applications, while being applicable by users without extensive programming skills at the same time. In this context, we present an extension of the Open Source and Open Access TRANSPORT Simulation Environment, which has been coupled with the geoche
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7

Khaledialidusti, Rasoul, and Jon Kleppe. "Significance of Geochemistry in Single-Well Chemical-Tracer Tests by Coupling a Multiphase-Flow Simulator to the Geochemical Package." SPE Journal 23, no. 04 (2018): 1126–44. http://dx.doi.org/10.2118/189971-pa.

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Summary Single-well chemical tracer (SWCT) is the most commonly used field method to determine oil or water saturation in one-well enhanced-oil-recovery (EOR) pilots. Because hydrolysis of an ester, which is the main part of the method, leads to forming acid as well as alcohol, the equilibrium state of the reservoir is disturbed, and thus the pH changes. It is generally accepted that the hydrolysis-reaction rate is mainly dependent on the pH and temperature. Therefore, it is required to know the extent to which this dependency might affect the shape of the product-tracer profiles and the numer
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Fengjuan, Zhang, Xing Liting, Wang Song, Zhuang Huibo, Dou Tongwen, and Yang Zengyuan. "Research on Formation Mechanism of Jiyang Shallow Saline Ground Water." Open Chemical Engineering Journal 9, no. 1 (2015): 155–60. http://dx.doi.org/10.2174/1874123101509010155.

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Shallow salt water in the inland plain has huge development potential. Taking saline water area in Sungeng Town, Jiyang County as an example, based on field water quality and water table tests., tracing test, methods such as mathematical statistical, hydrochemistry diagram of piper and numerical simulation by PHREEQC are used to analyze synthetically. 6862 groups data were studied. Results showed: (1) The groundwater presents typically “weather - evaporation” type, chemistry type is Cl.SO4-Mg.Na. and Cl.SO4-Na.Mg type. (2) In area of inland saline water presents characteristics of lagging wate
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Luo, Haishan, Emad W. Al-Shalabi, Mojdeh Delshad, Krishna Panthi, and Kamy Sepehrnoori. "A Robust Geochemical Simulator To Model Improved-Oil-Recovery Methods." SPE Journal 21, no. 01 (2016): 55–73. http://dx.doi.org/10.2118/173211-pa.

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Summary The interest in modeling geochemical reactions has increased significantly for different improved-oil-recovery processes such as alkali/surfactant/polymer (ASP) flood, low-salinity waterflood, and ethylenediaminetetraacetic acid (EDTA) injection as a sacrificial agent in hard brine. Numerical simulation of multiphase flow coupled with geochemical reactions is challenging because of complex and coupled aqueous, aqueous/solid, and aqueous/oleic reactions. These reactions have significant impact upon oil recovery, and hence a robust geochemical simulator is important. UTCHEM (2000) is a c
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10

Baqer, Yousef, Keith Bateman, Vanessa M. S. Tan, Douglas I. Stewart, Xiaohui Chen, and Steven F. Thornton. "The Influence of Hyper-Alkaline Leachate on a Generic Host Rock Composition for a Nuclear Waste Repository: Experimental Assessment and Modelling of Novel Variable Porosity and Surface Area." Transport in Porous Media 140, no. 2 (2021): 559–80. http://dx.doi.org/10.1007/s11242-021-01702-2.

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Abstract Deep geological disposal is the preferred solution for long-term storage of radioactive waste in many countries. In a deep repository, cementitious materials are widely used in the structure and buffer/backfill of the repository for the stabilisation of the hazardous materials. The cement acts as a physical barrier and also contributes chemically to waste containment by buffering the groundwater to a high pH, limiting the solubility of many radionuclides. This paper describes an experimental and modelling study which evaluates the geochemical interaction between young cement leachate
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Tesis sobre el tema "PhreeqC numerical simulations"

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Ndjaka, Ange. "THERMOPHYSICAL PROCESSES AND REACTIVE TRANSPORT MECHANISMS INDUCED BY CO2 INJECTION IN DEEP SALINE AQUIFERS." Electronic Thesis or Diss., Pau, 2022. http://www.theses.fr/2022PAUU3003.

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Le stockage du CO2 dans les aquifères salins profonds a été reconnu comme l'une des voies les plus prometteuses pour atténuer les émissions atmosphériques de CO2 et répondre ainsi aux enjeux du changement climatique. Cependant, l’injection du CO2 dans le milieu poreux perturbe considérablement son équilibre thermodynamique. La zone proche du puits d’injection est particulièrement impactée avec une forte réactivité géochimique associée à d’intenses échanges thermiques. Cela a un impact majeur sur l’injectivité du réservoir et l’intégrité du stockage. A ces effets s’ajoute une complexité supplém
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Jara, Heredia Daniel. "Improvement of the numerical capacities of simulation tools for reactive transport modeling in porous media." Thesis, Rennes 1, 2017. http://www.theses.fr/2017REN1S036/document.

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La modélisation du transport réactif dans les milieux poreux implique la simulation de plusieurs processus physico-chimiques : écoulement de phases fluides, transport de chaleur, réactions chimiques entre espèces en phases identiques ou différentes. La résolution du système d'équations qui décrit le problème peut être obtenue par une approche soit totalement couplée soit découplée. Les approches découplées simplifient le système d'équations en décomposant le problème sous-parties plus faciles à gérer. Chacune de ces sous-parties peut être résolue avec des techniques d'intégration appropriées.
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3

Laera, Nichi. "Geochemical modelling of copper precipitation as consequence of steel corrosion in flow‐through experiments mimicking a geothermal production well." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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In my thesis work, 0D geochemical numerical models were implemented in order to qualitatively and quantitatively understand the results of a set of experiments obtained from a physical model, to simulate the concretion effects on high enthalpy geothermal wells. In particular a set of flow-through simulation results based on the physical model were used to reproduce the precipitation of metallic copper resulting from steel corrosion in a geothermal production well positioned at Groß Schönebeck, Germany. The numerical models were implemented with PHREEQC hydrogeochemical simulator (Appelo and P
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4

Habtemichael, Yonas T. "Hydrogeochemical Modeling of Saltwater Intrusion and Water Supply Augmentation in South Florida." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2438.

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The Biscayne Aquifer is a primary source of water supply in Southeast Florida. As a coastal aquifer, it is threatened by saltwater intrusion (SWI) when the natural groundwater flow is altered by over-pumping of groundwater. SWI is detrimental to the quality of fresh groundwater sources, making the water unfit for drinking due to mixing and reactions with aquifer minerals. Increasing water demand and complex environmental issues thus force water utilities in South Florida to sustainably manage saltwater intrusion and develop alternative water supplies (e.g., aquifer storage and recovery, ASR).
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Actas de conferencias sobre el tema "PhreeqC numerical simulations"

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Elgendy, Ahmed M. S., Alberto Pizzolato, Marco Maniglio, Claudio Geloni, Paola Panfili, and Caterina Topini. "Reactive Transport Modelling of H2 Storage in Depleted Gas Fields: An Approach to Implement Biogeochemical Reactions in a Compositional Reservoir Simulator." In SPE EuropEC - Europe Energy Conference featured at the 84th EAGE Annual Conference & Exhibition. SPE, 2023. http://dx.doi.org/10.2118/214434-ms.

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Abstract The demand for large scale energy storage has been increasing for the integration of highly fluctuating energy production from renewables. Depleted gas fields are among the most suitable candidates for underground hydrogen storage, with well-known high-quality reservoir petrophysical characteristics, huge storage capacities and good sealing. However, biogeochemical interactions of hydrogen with rock-brine-resident gas could lead to hydrogen degradation as it is a favoured substrate for many anaerobic microorganisms. Thus, reservoir-scale predictive tools able to simulate these complex
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2

Fani, Mahmood, Tina Puntervold, Skule Strand, and Aleksandr Mamonov. "Assessing the Effect of Carbonated Water on the Geochemistry of CO2-Storing-Bed Minerals." In SPE Norway Subsurface Conference. SPE, 2024. http://dx.doi.org/10.2118/218484-ms.

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Abstract Global warming and climate change are influenced by the discharge of carbon dioxide into the Earth's atmosphere. CO2 can be injected into underground storage locations such as depleted oil and gas reservoirs or saline aquifers to reduce emission impacts. Injected CO2 will be located next to the reservoir phases in place: brine, pore surface minerals, and any residual oil. CO2 in brine forms carbonic acid, which could affect the stability of minerals. Short-term and long-term geochemical alteration processes should be screened to improve the understanding of mineral dissolution and in-
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Hassan, Anas Mohammed, Mohammed Abdalla Ayoub, Mysara Eissa Mohyaldinn, and Emad Walid Al-Shalabi. "Insights into Hybrid Smart Water Assisted Foam (SWAF) Flooding in Carbonate Reservoirs: A Combined Numerical and Experimental Approach." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/211439-ms.

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Abstract Smart Water Assisted Foam (SWAF) flooding is a promising and an emerging synergic enhanced oil recovery (EOR) technique that combines smart water and foam injections. This technique works best in carbonates with mixed-to-oil wet wettability, where smart water (SW) alters the rock wettability towards a water-wetting state and stabilizes the foam lamellae, and surfactant aqueous solution (SAS) reduces interfacial tension (IFT) leading to improvement in oil recovery. This paper provides more insight and better understanding of the controlling mechanisms behind incremental oil recovery by
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Sennaoui, Billel, Hui Pu, Nuri Oncel, Mohamed Lamine Malki, and Samuel Afari. "Experimental and Numerical Simulation Using X-ray Photoelectron Spectroscopy (XPS) and PHREEQC for Geochemical Interaction Effect on ScCO2-EOR and Storage in Unconventional Reservoirs." In Unconventional Resources Technology Conference. American Association of Petroleum Geologists, 2023. http://dx.doi.org/10.15530/urtec-2023-3864179.

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Al Dandan, Esam, and Md Mofazzal Hossain. "Understanding of Geochemical Reactions in Hydrogen-Injected Wells: Cement Integrity for Safe Underground Hydrogen Storage." In International Petroleum Technology Conference. IPTC, 2024. http://dx.doi.org/10.2523/iptc-23620-ms.

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Abstract As the world transitions to clean energy sources, Underground Hydrogen Storage (UHS) has emerged as a leading solution for large-scale hydrogen storage. While the depleted oil or gas reservoirs are ideal for UHS, the effect of geochemical reactions among injected hydrogen, wellbore, and cement is not documented. This study aims to assess cement and well integrity by examining the geochemical interaction between API cement and hydrogen near the wellbore under varying temperature and pressure conditions. The numerical simulation was carried out to study the geochemical reaction between
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6

Hassan, Anas M., Emad W. Al-Shalabi, Waleed AlAmeri, Muhammad S. Kamal, Shirish Patil, and Syed M. Shakil Hussain. "New Insights into Hybrid Low Salinity Polymer (LSP) Flooding Through a Coupled Geochemical-Based Modeling Approach." In SPE Annual Technical Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/210120-ms.

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Abstract Low Salinity Polymer (LSP) flooding is one of the emerging synergic techniques in enhance oil recovery (EOR). Previous experimental studies showed an exceptional improvement in displacement efficiency, polymer rheology, injectivity, and polymer viscoelasticity. Nevertheless, when it comes to modeling LSP flooding, it is still challenging to develop a mechanistic predictive model that captures polymer-rock-brine interactions. Therefore, this study employs a coupled geochemical-reservoir numerical model to investigate the effect of water chemistry on polymer-brine-rock geochemical inter
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