International Journal of Greenhouse Gas Control最新文献

{"title":"Physics-coupled machine learning toolset for geological carbon storage evaluation and performance analysis","authors":"Guoxiang Liu ,&nbsp;Xiongjun Wu ,&nbsp;Chung-Yan Shih ,&nbsp;Veronika Vasylkivska ,&nbsp;Hema Siriwandane ,&nbsp;Grant Bromhal","doi":"10.1016/j.ijggc.2025.104538","DOIUrl":"10.1016/j.ijggc.2025.104538","url":null,"abstract":"<div><div>A comprehensive toolset that can provide fast and accurate design, survey, planning, monitoring, and evaluation of behaviors and responses in the reservoir field is essential to achieve successful geological carbon capture and storage (CCS) development and operations, with or without enhanced hydrocarbon recovery. Based on the physics of material balance between injection and extraction, the Capacitance Resistance Model (CRM) method can perform rapid history matching (HM), forecasting, and optimizations in operational scale. Such capabilities provide key operational guidance to users with insights of an individual well regarding its injection/extraction and bottom hole pressure (BHP), as well as inter-well connectivity of multiple wells in the field along with its flexible time-window capability for operation planning and development. Moreover, advanced artificial intelligence (AI)/machine learning (ML) models developed for the virtual learning environment (VLE) are also coupled with the workflow to provide detailed three-dimensional reservoir field responses that are essential to the geological CCS monitoring and evaluation of the optimal reservoir management and risk reduction. The proposed approach with physics-informed ML demonstrates the value for emerging “SMART” field operations and reservoir management with three to four orders of magnitude speed-up in computational time in a real-time and near real-time fashion. Innovatively coupling CRM and virtual learning together brings a dual benefit for both rapid operational focus in field applications and drilling down to the detailed three-dimensional of reservoir evolutions. Such provides insights and comprehensive understanding for CO₂ storage and other application potentials such as oil &amp; gas, geothermal, and hydrogen applications.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"149 ","pages":"Article 104538"},"PeriodicalIF":5.2,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AI-driven rapid forecasting of CO2 plume migration and trapping efficiency in geological carbon storage","authors":"Oluwasanmi Talabi ,&nbsp;Guodong Ren ,&nbsp;Siddharth Misra","doi":"10.1016/j.ijggc.2025.104535","DOIUrl":"10.1016/j.ijggc.2025.104535","url":null,"abstract":"<div><div>Accurate and rapid forecasting of CO₂ trapping, mobility, and plume evolution under dynamic injection conditions is crucial for effective planning, operational optimization, and regulatory compliance in geological carbon storage (GCS) projects. Traditional analytical methods often rely on oversimplified assumptions, compromising accuracy, while numerical simulations, though precise, require extensive computational resources, limiting their utility for real-time scenario analysis.</div><div>To overcome these challenges, this study proposes an advanced deep learning framework for forecasting trapped and movable CO₂ fractions and plume extent. An enhanced sequence-to-sequence (Seq2Seq) neural network with a composite loss function robustly predicts CO₂ volumetrics, while a hybrid Long Short-Term Memory (LSTM) and Multilayer Perceptron (MLP) model forecasts CO₂ plume extent. The models incorporate nine static geological and reservoir characteristics and dynamic injection profiles, capturing real-world injection complexities, including varying rates and intermittent schedules with multiple start-stop events. Training utilized several hundred high-fidelity numerical simulation realizations covering diverse geological and operational scenarios.</div><div>The enhanced Seq2Seq model achieved an average Mean Absolute Error (MAE) of 0.016 for trapped and movable CO₂ fractions, while the LSTM-MLP model attained an average MAE of 42 meters for plume diameter. These deep learning-driven surrogates drastically reduce computational time, providing accurate forecasts within seconds per scenario compared to conventional methods requiring hours. This significant advancement facilitates rapid, reliable decision-making, optimized storage strategies, and rigorous regulatory compliance in GCS initiatives.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"149 ","pages":"Article 104535"},"PeriodicalIF":5.2,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145645762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbon capture & storage 2030: As the market takes shape, can Europe’s CO2 storage projects meet growing demand?","authors":"Andrew J Cavanagh ,&nbsp;Toby Lockwood","doi":"10.1016/j.ijggc.2025.104505","DOIUrl":"10.1016/j.ijggc.2025.104505","url":null,"abstract":"<div><div>The carbon capture contribution to Europe’s 2030 net zero targets begins to clearly emerge from significant growth in recent project announcements and geological storage licensing, as well as new political strategies at the European Union and national level. Analysis of projects at various stages of development indicates that both the current EU (50 Mtpa) and recent UK (20–30 Mtpa) targets may be achieved if capture build-out and storage deadlines are met, access is improved and expected storage rates are exceeded. The addition of large European Economic Area (EEA) storage projects in Norway will likely be essential to meet EU demand and provide a contingency against storage capacity shortfalls. The analysis uses published sources to investigate the distribution and timing of CO₂ injection capacity for 33 projects across the region that have a reasonable chance of delivering megatonne storage in the near future. The outcomes project a low-mid-high range, equivalent to a pessimistic, expected, and optimistic outlook for 2030. Projects typically store 1–3 Mtpa. Expected national contributions range from small, e.g. 1 Mtpa for Bulgaria and Greece, to large, e.g. 12 Mtpa for Denmark and Norway. The data indicates that the EEA and UK may deliver a combined regional storage rate of 18–108 Mtpa by 2030, with an expected mid-range forecast of 60 Mtpa, i.e. slightly less than a 70–80 Mtpa aggregated net zero target for the EU and UK. Projects are heavily concentrated around the North Sea, leaving many emissions intensive regions with limited or costly access to storage.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"148 ","pages":"Article 104505"},"PeriodicalIF":5.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145526798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Techno-economic and environmental assessment of carbon capture and storage in northeastern U.S. industrial clusters","authors":"A.C. (Thanos) Bourtsalas ,&nbsp;D. Goldberg ,&nbsp;T. Zorn","doi":"10.1016/j.ijggc.2025.104499","DOIUrl":"10.1016/j.ijggc.2025.104499","url":null,"abstract":"<div><div>This study evaluates the techno-economic and environmental performance of large-scale carbon capture and storage (CCS) deployment across 175 industrial facilities in the Northeastern United States, including fossil fuel power plants, cement, lime, glass, and waste-to-energy (WtE) plants—collectively emitting 147.2 million tons of CO₂ annually. A regional hub model was developed to leverage economies of scale, spatial clustering, and shared infrastructure for both onshore and offshore storage. Techno-economic analysis shows that onshore CCS achieves lower break-even prices ($44.5–46.7/ton CO₂) and higher NPV ($38.4–72.7 billion) than offshore CCS ($54.2–58.1/ton CO₂; NPV $27.2–55.4 billion). Life-cycle assessment reveals lower environmental burdens for onshore CCS (123.5 Mtons CO₂-eq vs. 136.2 Mtons for offshore), particularly when powered by renewables. Switching to offshore wind or hybrid wind–solar electricity can reduce life-cycle impacts by over 90 % across key TRACI indicators, including global warming and ecotoxicity. A multi-criteria evaluation across eight dimensions assigns a total score of 600/800 to onshore CCS and 545/800 to offshore. Onshore systems outperform in cost-efficiency, technical feasibility, and monitoring potential, while offshore CCS offers advantages in reducing land-use conflicts and improving public acceptance—making it a valuable option for coastal industrial clusters. Cement plants emerge as favorable candidates due to higher CO₂ concentrations. Fossil plants offer the greatest abatement potential, and WtE facilities present integration opportunities in urban settings. Though smaller in scale, lime and glass industries can benefit from cluster-based strategies. The findings highlight the importance of aligning CCS deployment with renewable electricity and recommend extending 45Q credit duration, streamlining permitting, and enabling regionally tailored strategies.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"148 ","pages":"Article 104499"},"PeriodicalIF":5.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145360934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling atmospheric impacts of amine emissions from post-combustion carbon capture systems","authors":"Prakash Karamchandani ,&nbsp;Tianyu Gao ,&nbsp;Pradeepa Vennam ,&nbsp;Greg Yarwood ,&nbsp;Eladio Knipping ,&nbsp;Abhoyjit S. Bhown","doi":"10.1016/j.ijggc.2025.104532","DOIUrl":"10.1016/j.ijggc.2025.104532","url":null,"abstract":"<div><div>This paper describes the application of a photochemical puff model, the Second-Order Closure Integrated Puff Model with Chemistry (SCICHEM), to simulate the impacts of air emissions associated with amine-based post-combustion CO₂ capture. Amines react in the atmosphere with the hydroxyl (OH) radical and other oxidants to form potentially harmful products, such as nitrosamines and nitramines. Amines can also form particles with sulfuric acid that may be present in the amine absorber or in the atmosphere. Nitrosamines can photolyze back to the amino radical. Simulating these processes requires the use of a photochemical model that can provide concentrations of the oxidants that influence amine chemistry. In this work, SCICHEM was adapted to include the chemistry of three amines: monoethanolamine (MEA), 2-amino-2-methylpropanol (AMP) and piperazine (PZ). These solvents were chosen since more thermodynamic and kinetic data are available for these amines than for other proprietary amines. The model was applied to the Midwest and Gulf Coast regions in the United States to evaluate the air quality impacts of amine-based post-combustion carbon capture (PCCC) systems applied to natural gas combined cycle (NGCC) and coal-fired power plants. Three representative amine solvents (PZ, MEA, and CESAR 1, a blend of PZ and AMP) were studied, and configurations with water wash and with acid wash were used in the modeling. The results show that with water wash, the long-term annual average air concentrations of nitrosamines + nitramines for all three solvents are well below the exposure limit of 0.3 ng/m³ established by the Norwegian Institute of Public Health (NIPH). However, the 98^th percentile of the 24 h averages of nitrosamine + nitramine are above the exposure limit, indicating some health concern from short-term exposure. Using acid wash resulted in significant reductions in nitrosamine + nitramine concentrations, as well as in total PM_2.5. For PZ and MEA, using acid wash reduced the peak 24 h and 98^th percentile 24 h nitrosamine + nitramine concentrations to below the limit. However, for some of the CESAR 1 solvent scenarios, the threshold is still exceeded when acid wash is used.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"148 ","pages":"Article 104532"},"PeriodicalIF":5.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145690721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reactivity of glauconitic sandstones in CO2 experiments","authors":"Rikke Weibel ,&nbsp;Samira Khani Rasmussen ,&nbsp;Wael Fadi Al-Masri ,&nbsp;Hanne D. Holmslykke ,&nbsp;Andrew Fogden ,&nbsp;Stephen Hillier ,&nbsp;Nynke Keulen ,&nbsp;Mette Olivarius ,&nbsp;Knud Didriksen ,&nbsp;Jesper Stokkendal ,&nbsp;Niels H. Schovsbo","doi":"10.1016/j.ijggc.2025.104501","DOIUrl":"10.1016/j.ijggc.2025.104501","url":null,"abstract":"<div><div>The Palaeogene glauconitic sandstones in the produced Nini West oilfield were successfully tested by pilot injection of ∼4 kT of CO₂ in the Spring 2023 and the application for permanent storage facility is now being evaluated at the Danish Energy Agency. The sandstones are unique by having 25–30 vol% glauconitic clasts, which consist of mixed-layer glauconitic mica/Fe-smectite. The objective of the presented study was to document the reactivity of the glauconitic sandstones with respect to deterioration and carbonation during CO₂ injection. Four flooding experiments were conducted at reservoir conditions whereby supercritical CO₂ (scCO₂) was injected in sandstone plugs saturated with synthetic brine mimicking the formation water. Different flow rates, brine volumes, presence of hydrocarbons, purity of CO₂ and numbers of cycles of brine and scCO₂ were used to evaluate how individual parameters affected the glauconitic sandstones. A range of techniques were used to characterise the sandstone samples before and after experiments, such as Micro-CT, petrographical investigations in optical and scanning electron microscope (SEM), automated quantitative mineralogy (AQM), bulk and clay mineralogy by X-ray diffraction (XRD).</div><div>The glauconitic clasts show a changed colour in optical microscope and had increased iron content (based on AQM) after the experiments, caused by intraclast precipitation of iron-oxide/hydroxide after partial dissolution of glauconitic clasts and/or corrosion of the test equipment. Dissolution grooves formed in K-feldspar overgrowth during some experiments show that K-feldspar dissolved when exposed to the acidic conditions arising when CO₂ with NO₂ and SO₂ was injected. Intensive dissolution of scattered calcite cement occurred in all experiments flooded with alternating CO₂ and brine. Alteration and dissolution of siderite rhombs intensified in samples without hydrocarbons present. Carbonate dissolution and glauconitic clast alterations resulted in slight decrease in geomechanical strength, although not viewed critical for reservoir integrity.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"148 ","pages":"Article 104501"},"PeriodicalIF":5.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145414664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-aqueous CO2 capture solvent corrosion results from testing at technology centre mongstad","authors":"Katy E. Jessop,&nbsp;Paul D. Mobley,&nbsp;Jak Tanthana,&nbsp;Vijay Gupta,&nbsp;Marty A. Lail","doi":"10.1016/j.ijggc.2025.104504","DOIUrl":"10.1016/j.ijggc.2025.104504","url":null,"abstract":"<div><div>RTI International demonstrated its non-aqueous CO₂ capture solvent (NAS) at Technology Centre Mongstad in 2022. A corrosion study was conducted to determine appropriate materials of construction for NAS capture plants and generate an accurate techno-economic analysis. Stainless steel, carbon steel, resin, and elastomer corrosion coupons were installed in five process locations to investigate corrosion rates under different temperature, CO₂ loading, flow velocity, and stream phase conditions. Following exposure, optical microscopy, scanning electron microscopy, dye penetrant testing, and shore hardness measurements were used to evaluate the material characteristics. Carbon steels had excellent corrosion resistance under cold solvent stream and stripper overhead conditions indicating lower alloy steel may be used in these process areas; stainless steels had excellent performance under all conditions. ULTEM 1000 resin and EPDM-60A elastomer were not suitable for use with NAS, however Gislaved Gummi’s proprietary EPDM-XH withstood exposure to NAS. NAS’ low water content was critical to minimizing the formation and transport of corrosion and solvent degradation inducing ions, resulting in low corrosivity. Dissolved metals and solvent conductivity were monitored as an indicator of system corrosion. NAS had significantly less dissolved metals content when compared to similar testing with 30 wt% MEA, which can be attributed to the low NAS corrosivity. Literature correlations between CO₂ capture solvent conductivity and corrosion rates could not accurately predict the minimal NAS corrosion rates.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"148 ","pages":"Article 104504"},"PeriodicalIF":5.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145414650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regional pressure response to large-scale carbon storage in the bunter sandstone formation, Silverpit Basin (Southern North Sea, UK)","authors":"Mattia De Luca ,&nbsp;Eric J. Mackay ,&nbsp;Timothy R. Good ,&nbsp;Vittorio Scisciani ,&nbsp;Colin MacBeth ,&nbsp;Stefano Patruno ,&nbsp;Joseph Sutcliffe","doi":"10.1016/j.ijggc.2025.104530","DOIUrl":"10.1016/j.ijggc.2025.104530","url":null,"abstract":"<div><div>Carbon Capture and Storage (CCS) technologies play a pivotal role in mitigating anthropogenic carbon emissions by enabling the long-term subsurface sequestration of CO₂. These are essential for achieving international climate targets and supporting short- to mid-term mitigation strategies. Among potential storage sites, the extensive saline aquifer of the Bunter Sandstone in the Silverpit Basin has been identified as a high-capacity reservoir suitable for CCS deployment. With more CO₂ injection projects planned, understanding the broader aquifer sensitivity is essential.</div><div>This study investigates the influence of geological settings and boundary transmissibility on the aquifer response to large-scale CO₂ injection.</div><div>A regional model of the Silverpit was developed to simulate CO₂ injection at a rate of 1 Mt/yr/well over 50 years across 14 wells, followed by a 5000-year post-injection observation period to assess plume migration and pressure behaviour.</div><div>The findings indicate that the reservoir can safely accommodate approximately 700 Mt of supercritical CO₂. However, pressure footprint extends over tens of kilometres, underscoring the necessity of accurately characterising regional boundaries. Moreover, the latter significantly influences inter-regional flow dynamics, with observed inversions in flow direction. The structural setting of the Silverpit ensures effective CO₂ containment within four-way dip closures. A thorough understanding of these interactions is crucial for evaluating the potential need for brine production to manage reservoir pressure and mitigate pressure interference between storage licenses.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"148 ","pages":"Article 104530"},"PeriodicalIF":5.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145621217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced imaging of multi-layer CO2 plumes using full-waveform inversion: Insights from the Sleipner storage site","authors":"Ricardo Martinez ,&nbsp;Vetle Vinje ,&nbsp;Joachim Mispel ,&nbsp;Philip Ringrose ,&nbsp;Alexey Stovas ,&nbsp;Martin Landrø","doi":"10.1016/j.ijggc.2025.104517","DOIUrl":"10.1016/j.ijggc.2025.104517","url":null,"abstract":"<div><div>In this study, we demonstrate the benefits of applying full-waveform inversion (FWI), for the imaging of multi-layer CO₂ plumes. We apply 3D FWI, up to 42 Hz, using the 2010 towed-streamer data from the Sleipner storage site offshore Norway. While the 3D FWI method does not aim to replace 4D FWI for CO₂ migration monitoring, the properties of the Utsira aquifer at Sleipner, with low stiffness and shallow burial depth, enable effective mapping of the CO₂ without the need of a repeated FWI application. Our FWI model and associated images offer a significant imaging improvement in the lower half of the plume compared with the legacy seismic data, revealing vertical CO₂ migration routes that have not been observed previously at the site. We show the limitations of reflection-based migration methods for imaging CO₂ migration pathways and demonstrate that FWI can improve their detection. The FWI model can support conventional time-lapse analyses by improving the interpretation of known CO₂ migration routes, by highlighting CO₂ layers with low reflectivity, and by attenuating multiples better. Our analysis suggests that CO₂ migration at Sleipner is likely controlled by several vertical communication routes, including chimneys, and linear structures, several hundreds of meters long, that connect multiple accumulations of CO₂. Within each layer, our analysis suggests buoyancy-driven, fill-to-spill migration, constrained by the topography of the sealing units. Finally, we conclude that, while simple CO₂ accumulations can be monitored successfully using reflection-based migration methods and analyses, multi-layered CO₂ plumes will greatly benefit from complementary analyses using FWI.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"148 ","pages":"Article 104517"},"PeriodicalIF":5.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145621216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling two-phase multicomponent CO2 mixtures in offshore pipelines under hydraulic shock","authors":"Ferdinand Uilhoorn,&nbsp;Maciej Chaczykowski,&nbsp;Andrzej J. Osiadacz,&nbsp;Tomasz Bleschke,&nbsp;Łukasz Kotyński","doi":"10.1016/j.ijggc.2025.104541","DOIUrl":"10.1016/j.ijggc.2025.104541","url":null,"abstract":"<div><div>Carbon capture and storage is crucial for reducing emissions from fossil fuel power plants and industries with significant CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> production. To ensure safe pipeline design, integrated emergency shutdown systems are implemented, which can induce rapid changes in flow conditions, potentially causing critical pressure spikes and phase transitions, accelerating cavitation and material fatigue. In this work, we used a homogeneous two-phase flow model to evaluate the risk of two-phase flow during a hydraulic shock. The heat transfer between the CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>-rich stream and its surroundings is modeled using a heat transfer model with steady-periodic thermal boundary conditions. We considered pure CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> and CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> mixtures containing impurities obtained from pre-combustion and post-combustion carbon capture technologies. We investigated the influence of impurities, the choice of equation of state, pipeline inclination, and flow closure characteristics. The flow model is approximated using a weighted essentially non-oscillatory scheme coupled with the Harten–Lax–van Leer Contact flux. The model was benchmarked against a Riemann problem, a depressurization scenario, and decompression wave speed measurements, and further validated using pressure pulse data from cavity collapse experiments caused by rapid valve closure in water. The model’s applicability is demonstrated through a case study of an offshore pipeline, utilizing parameters from the Porthos project. Results indicated that CO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>-rich streams initially in the liquid phase and near the saturation line can trigger vapor formation, but it depends on the impurity content. The results showed to be sensitive for the selected equation of state.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"148 ","pages":"Article 104541"},"PeriodicalIF":5.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145690720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}