G. Hema, S.P. Maurya, Ajay P. Singh, Abhay Kumar, Vivek Kumar Patel, Avinash Kumar Chouhan
{"title":"Enhanced subsurface characterization of the Smeaheia CO2 storage reservoir field using JAYA and differential evolution based seismic inversion","authors":"G. Hema, S.P. Maurya, Ajay P. Singh, Abhay Kumar, Vivek Kumar Patel, Avinash Kumar Chouhan","doi":"10.1016/j.ijggc.2026.104767","DOIUrl":"10.1016/j.ijggc.2026.104767","url":null,"abstract":"<div><div>Carbon Capture and Storage (CCS) has emerged as a key strategy for mitigating anthropogenic CO₂ emissions, requiring accurate reservoir characterization and reliable monitoring of injected CO₂ to ensure safe storage. This study evaluates the CO₂ storage potential of the Smeaheia field in the Northern North Sea through seismic inversion based reservoir characterization. Well-log interpretation, petrophysical analysis, and 3D seismic data were integrated to evaluate the Sognefjord and Fensfjord formations as primary and secondary reservoir targets. A global optimization based seismic inversion workflow was implemented using two metaheuristic algorithms, JAYA (JA) and Differential Evolution (DE), to estimate acoustic impedance. Synthetic seismic modeling was conducted to validate the inversion framework and evaluate the detectability of CO₂-induced impedance variations. Both algorithms successfully reconstructed baseline impedance and detected impedance reductions within reservoir intervals associated with CO₂ saturation. Application to field seismic data validated the approach, composite-trace inversion at the well location showed good agreement with the well-log derived impedance, yielding a correlation coefficient of 0.95 and an R² of 0.89 for both algorithms. The full-volume inversion produced geologically consistent impedance sections, with reservoir intervals characterized by lower impedance values. Quantitative evaluation indicates improved inversion quality for JA compared to DE, with lower RMSE (0.119 versus 0.149), higher mean correlation coefficient (0.842 versus 0.737) and higher SNR (5.37 dB versus 3.44 dB). These results demonstrate the effectiveness of global optimization based seismic inversion for reservoir characterization and CO₂ monitoring and highlight its potential as a reliable tool for CCS site assessment in comparable geological settings.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"155 ","pages":"Article 104767"},"PeriodicalIF":5.9,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148958533","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}
Elena Konstantinovskaya, Jean-Sébastien Marcil, Jose A. Rivero, Valentina Vallega
{"title":"Assessing CO2 injection capacity and safe CO2 injection rates in the fractured tight Potsdam sandstone reservoir, St. Lawrence Platform, Quebec","authors":"Elena Konstantinovskaya, Jean-Sébastien Marcil, Jose A. Rivero, Valentina Vallega","doi":"10.1016/j.ijggc.2026.104771","DOIUrl":"10.1016/j.ijggc.2026.104771","url":null,"abstract":"<div><div>CO<sub>2</sub> storage operations in fractured sandstone reservoirs are challenging as they may result in high reservoir pressure buildup, caprock hydraulic fracturing, or fault slip reactivation. We assess CO<sub>2</sub> injection capacity in fractured tight saline aquifer of the Lower Paleozoic Potsdam sandstone in the Bécancour fault block, St. Lawrence Platform at a depth of ∼1.2 km. Static storage capacity evaluation and 3D dynamic reservoir simulations of CO<sub>2</sub> injection in a vertical and a horizontal well are conducted. The fractured reservoir model is calibrated by performing a history match based on brine production. CO<sub>2</sub> is predominantly stored in the gas phase rather than dissolved in water, with a greater amount residing in the matrix than migrating through fractures. The pressure front propagates through the fractured reservoir much faster and farther than the CO<sub>2</sub> plume, elevating geomechanical and well integrity risks at a greater distance from the injection site area. In fractured tight reservoirs with pressure-limited capacity, CO<sub>2</sub> single-well accessible storage potential and actual injection rate are strongly controlled by pore volume, bottomhole pressure buildup, and well design. Utilization of horizontal, rather than vertical, wells in fractured tight reservoirs is estimated to be preferable for CO<sub>2</sub> injection as it helps to increase reservoir contact, maximize intersection with vertical fractures, reduce bottomhole pressure and vertical CO<sub>2</sub> plume propagation, lower the risk of caprock leakage and increase storage capacity. A grid-sensitivity test indicates that dynamic properties, such as pressure and saturation, depend on grid cell size and are more accurately estimated in fine resolution grids.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"155 ","pages":"Article 104771"},"PeriodicalIF":5.9,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148958532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Laura Herraiz , Iain Struthers , Dan Su , Hasan Muslemani , Mathieu Lucquiaud , R. Camilla Thomson
{"title":"Life cycle assessment of four waste-to-energy plant configurations equipped with post-combustion carbon capture and storage","authors":"Laura Herraiz , Iain Struthers , Dan Su , Hasan Muslemani , Mathieu Lucquiaud , R. Camilla Thomson","doi":"10.1016/j.ijggc.2026.104588","DOIUrl":"10.1016/j.ijggc.2026.104588","url":null,"abstract":"<div><div>When equipped with Carbon Capture and Storage (CCS), Waste to Energy plants can directly reduce fossil carbon dioxide emissions from post-recycling residual waste while also re-capturing atmospheric carbon dioxide via the permanent geological storage of biogenic carbon uptake. Increasingly, municipal solid waste (MSW) is treated by incineration in dedicated plants where the heat from combustion is recovered via electricity generation and district heating. Post-combustion CO<sub>2</sub> capture with amine-based technology can achieve ultra-high CO<sub>2</sub> capture rates such that CO<sub>2</sub> generated in the combustion of the waste feedstock results in no direct CO<sub>2</sub> emissions to the atmosphere. The large biogenic content of residual waste feedstock presents a particular opportunity for bioenergy with CCS (BECCS).</div><div>A life cycle assessment LCA of the environmental impacts of a state-of-the-art WtE facility with CCS at ultra-high capture rates shows that adding CCS can provide a significant improvement in climate change impact, and achieve a net climate benefit. Without significant burden shifting to other environmental impact categories, the climate change impact of a WtE plant treating 500 tpd of MSW is reduced from 388 kg CO<sub>2</sub>eq/t<sub>MSW</sub> to -483 kg CO<sub>2</sub>eq/t<sub>MSW</sub>, with the biogenic CO<sub>2</sub> captured and permanently stored accounted as negative CO<sub>2</sub> emissions. When the avoided greenhouse gas emissions from electricity, district heating and material recovery are also included, the climate impact is -777 kg CO<sub>2</sub>eq/t<sub>MSW</sub> for a power-only WtE plant exporting 9.6 MW<sub>e</sub>, and -907 kg CO<sub>2</sub>eq/t<sub>MSW</sub> for a combined heat and power WtE plant exporting 6.2 MW<sub>e</sub> and 18.5 MW<sub>th</sub>.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"151 ","pages":"Article 104588"},"PeriodicalIF":5.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077186","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":"Operational study of a 200,000 tonne/yr partial oxy-fuel combustion CO2 capture project for cement production","authors":"Changhua Chen , Zhouzheng Jin , Xueping Peng , Chenghang Zheng , Xiang Gao","doi":"10.1016/j.ijggc.2026.104585","DOIUrl":"10.1016/j.ijggc.2026.104585","url":null,"abstract":"<div><div>Oxy-fuel combustion presents a viable pathway for achieving near-zero carbon emissions in cement production, significantly reducing flue gas volume while enhancing CO<sub>2</sub> concentration to minimize capture costs. However, elevated CO<sub>2</sub> concentration impede raw meal decomposition in calciner, constituting a constraint for oxy-fuel combustion application. This study evaluated the world’s first industrial-scale 200,000 tonne/yr partial oxy-fuel combustion (oxy-fuel calciner) system in the cement sector, operational in China since 2024. The newly built oxy-fuel calciner operates with flexible transitions between air combustion, oxy-fuel combustion and hybrid combustion conditions, while the original rotary kiln and the pre-existing calciner remain to operate in air combustion condition. Operational results of the oxy-fuel calciner system indicated an average preheater outlet flue gas CO<sub>2</sub> concentration of 82.7 % in oxy-fuel combustion condition, marking a 47.5 % increase over air combustion, with a daily output of 667 tonnes of 99.95 % pure CO<sub>2</sub> production. To mitigate the inhibitory effects of high CO<sub>2</sub> on carbonate decomposition, calciner temperatures required elevation by 27–32 °C, achieving a raw meal calcination rate of 90–93 %. Notably, preheater outlet flue gas temperatures averaged 203 °C, 33 °C lower than air combustion, due to reduced gas volumes despite higher calciner temperatures. Real-time monitoring detected O<sub>2</sub> concentration variations, with air combustion at 1.7–2.6 %, hybrid combustion at 2.4–4.2 % and oxy-fuel operation at 2.0–5.2 %. The study also revealed that increased oxygen utilization exacerbates thermal and pressure instabilities, particularly impacting clinker free-CaO control in kiln operation.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"151 ","pages":"Article 104585"},"PeriodicalIF":5.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077273","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}
Rakul M.I. Johannesen , Olivier Galland , Hans Jørgen Kjøll , Jana Ólavsdóttir , Óluva Eidesgaard , Sverre Planke
{"title":"Impact of fractures on basaltic reservoirs - Field characterisation of fracture distribution in lava flows, Faroe Islands","authors":"Rakul M.I. Johannesen , Olivier Galland , Hans Jørgen Kjøll , Jana Ólavsdóttir , Óluva Eidesgaard , Sverre Planke","doi":"10.1016/j.ijggc.2026.104620","DOIUrl":"10.1016/j.ijggc.2026.104620","url":null,"abstract":"<div><div>Mafic lava flows have significant potential as fluid reservoirs, particularly for CO<sub>2</sub>; however, their highly heterogeneous nature results in variable storage capacity across different locations. A crucial parameter for assessing reservoir potential is injectivity, which is primarily controlled by porosity and permeability. Porosity and permeability in lava flows, typically in the form of vesicles, are high at the lava flow top and base, while the flow core tends to have low permeability. Additionally, secondary fracturing of lava flow units may significantly influence both injectivity and overall storage capacity. Despite the potential positive impact on reservoir properties, there has been a lack of detailed descriptions and quantifications regarding fractures in basalts. Our field-based study presents an area onshore the Faroe Islands, which serves as an analogue for the offshore North Atlantic Igneous Province. We have mapped the spatial distribution of lineaments and fracture network characteristics using digital elevation and outcrop models ranging from km-scale to cm-scale. Permeability was calculated using the software FracPaQ to evaluate the influence of fractures on reservoir potential. We found that (1) fracture spacing increases with lava flow thickness, (2) fractures add significant secondary permeability, and (3) both km-scale and cm-scale fractures exhibit similar east-west preferred orientation, implying a preferential fluid flow in the same east-west orientation. Our study provides vital field evidence of vertical and horizontal fracture distributions in lava flows, forming a foundational basis for initial site characterisation of future CO<sub>2</sub> reservoirs, and highlighting the importance of including fractures in the characterisation of volcanic reservoirs.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"151 ","pages":"Article 104620"},"PeriodicalIF":5.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147400208","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}
Seyi Philemon Akanji , Rossen Sedev , Lionel Esteban , Ausama Giwelli , Trevor Beardsmore , Heather Howard , Joel Sarout , Alireza Keshavarz , Stefan Iglauer
{"title":"Corrigendum to “Towards carbon geosequestration: comparing the wettability performance of Western Australian altered basaltic rock/CO2/water systems” [International Journal of Greenhouse Gas Control 149 (2026) 104554]","authors":"Seyi Philemon Akanji , Rossen Sedev , Lionel Esteban , Ausama Giwelli , Trevor Beardsmore , Heather Howard , Joel Sarout , Alireza Keshavarz , Stefan Iglauer","doi":"10.1016/j.ijggc.2026.104613","DOIUrl":"10.1016/j.ijggc.2026.104613","url":null,"abstract":"","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"151 ","pages":"Article 104613"},"PeriodicalIF":5.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147400209","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}
Audrey Ougier-Simonin , Owain Tucker , Alexander Bump , Sarah Eileen Gasda , Rannveig Elise Otterlei , Adriana Lemgruber-Traby , Eric Mackay , Ludovic Paul Ricard , Felix Herrmann , Matthias Imhof
{"title":"The pressure balancing act in geological storage: sharing the subsurface for the common good","authors":"Audrey Ougier-Simonin , Owain Tucker , Alexander Bump , Sarah Eileen Gasda , Rannveig Elise Otterlei , Adriana Lemgruber-Traby , Eric Mackay , Ludovic Paul Ricard , Felix Herrmann , Matthias Imhof","doi":"10.1016/j.ijggc.2026.104610","DOIUrl":"10.1016/j.ijggc.2026.104610","url":null,"abstract":"<div><div>Large-scale geological CO₂ storage (GCS) is essential for achieving net zero targets: its scalability is constrained less by pore volume occupancy than by pressure space—the finite capacity of connected formations to dissipate pressure increases without causing undesirable consequences (such as brine expulsion, induced seismicity, and lower injection rates for a given surface pressure). Current regulatory and commercial frameworks focus on project/site scale containment of CO<sub>2</sub>, but as multiple projects start to inject in the same storage formation, the cumulative pressure buildup will limit injectivity long before pore space is filled with CO<sub>2</sub>. Here we synthesize the physics of pressure propagation, the geomechanical limits, and interference across multiuser aquifers, and review monitoring and modelling strategies from analytical screening to full field simulations. Drawing on analogues from groundwater management and three regional illustrative examples (Horda Platform, Paris Basin, Captain Fairway), we show that pressure footprints can exceed plume extents by two orders of magnitude and propagate across tens to hundreds of kilometers. We argue that commons-based governance, underpinned by effective monitoring, open data, regional models, and adaptive allocation of pressure budgets, is essential for safe, efficient, and equitable storage. Treating pressure as a shared resource is not optional: it is the foundation for gigatonne scale CO₂ storage and sustainable multiuser use of the subsurface.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"151 ","pages":"Article 104610"},"PeriodicalIF":5.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147400215","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 dioxide pipeline network transportation cost model: evaluating economic and geographic factors for efficient carbon capture, storage, and utilization","authors":"Kwang Hoon Baek , Sheik Tanveer , Amgad Elgowainy","doi":"10.1016/j.ijggc.2026.104622","DOIUrl":"10.1016/j.ijggc.2026.104622","url":null,"abstract":"<div><div>This study presents a comprehensive pipeline network modeling framework to estimate the CO<sub>2</sub> delivery cost for CO<sub>2</sub> utilization and geologic CO<sub>2</sub> storage across the United States. We developed a Python-based CO<sub>2</sub> pipeline transportation cost model leveraging Argonne National Laboratory’s pipeline engineering expertise and detailed natural gas transmission pipeline cost data across U.S. regions. Using existing road corridors as practical routing guides, the model designs pipeline networks that aggregate CO<sub>2</sub> from one or multiple sources and deliver it to selected destinations. It then minimizes the total transportation cost by optimizing pipeline diameters and incorporating booster pumps.</div><div>A key contribution is the incorporation of up-to-date, region-specific cost factors with itemized components for materials, labor, miscellaneous construction expenses, and right-of-way acquisition. Results emphasize that regional variation and economies of scale associated with CO<sub>2</sub> pipeline costs are significant and should be explicitly accounted for in screening and planning studies. By combining realistic routing constraints with regionalized cost inputs, the model provides transparent design methodology and location-specific insights into source–destination delivery costs, including the effects of routing complexity along existing road networks.</div><div>We demonstrate the model with two illustrative case studies – one for CO<sub>2</sub> storage and one for CO<sub>2</sub> utilization – in which the model designs pipeline networks spanning hundreds of miles across the states, collecting CO<sub>2</sub> from multiple sources and delivering it to designated endpoints while minimizing levelized cost of delivery via diameter and compression optimization. The model offers a practical, scalable approach for alternative design option screening and early-stage CO<sub>2</sub> transportation planning.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"151 ","pages":"Article 104622"},"PeriodicalIF":5.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147400213","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}
Mahmoud Yahia , Norbert P. Szabó , Ahmed A. Radwan , Mahmoud Leila
{"title":"Integrated sedimentological and petrophysical rock typing of the Paleocene Farewell F sandstones: advancing sustainable solution for CO2 storage in Taranaki Basin, New Zealand","authors":"Mahmoud Yahia , Norbert P. Szabó , Ahmed A. Radwan , Mahmoud Leila","doi":"10.1016/j.ijggc.2026.104605","DOIUrl":"10.1016/j.ijggc.2026.104605","url":null,"abstract":"<div><div>As the global demand for effective carbon mitigation strategies intensifies, geological CO₂ storage has emerged as a key solution for supporting decarbonization efforts. However, reservoir heterogeneity and improper rock typing models often limit the accuracy of storage capacity predictions and long-term CO<sub>2</sub> injectivity assessments. This study addresses this gap by applying an integrated sedimentological, mineralogical and petrophysical rock typing analysis of the Farewell F Formation in the Maui Field, New Zealand with regional relevance for subsurface CO₂ storage. Maui Field in the Taranaki Basin hosts extensive, largely depleted gas-bearing reservoirs that represent promising candidates for long-term geological CO₂ storage. However, the storage potential of the Maui reservoir intervals remains insufficiently constrained. Farewell F consists mainly of mounded and onlapping wedge seismic facies corresponding to a prograding fluvio-deltaic sandstones. Mineralogically, Farewell F sandstone is classified as glauconitic, and argillaceous arkose arenite with heterogeneous porosity and permeability. Farewell F succession is subdivided into three distinct reservoir rock types (RRT<sub>1</sub>–RRT<sub>3</sub>). RRT<sub>1</sub> demonstrates optimal storage properties with porosity exceeding 15%, permeability ranging from 100 to 500 mD, and favorable capillary behavior, while RRT<sub>2</sub> and RRT<sub>3</sub> show tighter pore networks and higher capillary entry pressures, functioning as internal baffles and potential mineral trapping zones. The present results reveal a vertically organized architecture, offering a self-contained and stratigraphically governed storage system. Additionally, the glauconitic composition of Farewell sandstones may offer additional CO<sub>2</sub> storage capacity through mineral trapping. These findings underscore the potential of the Farewell Formation to support both physical and geochemical trapping mechanisms.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"151 ","pages":"Article 104605"},"PeriodicalIF":5.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147400311","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}
Basil Onyekayahweh Nwafor , John P. Castagna , Robert Van Eykenhof , Marianne Rauch , David E. Bass
{"title":"Integrating baseline and 4D seismic to assess structural and stratigraphic influences on CO2 containment at Sleipner","authors":"Basil Onyekayahweh Nwafor , John P. Castagna , Robert Van Eykenhof , Marianne Rauch , David E. Bass","doi":"10.1016/j.ijggc.2026.104609","DOIUrl":"10.1016/j.ijggc.2026.104609","url":null,"abstract":"<div><div>This study investigates the geologic controls governing CO₂ plume migration and trapping at the Sleipner storage site within the Utsira Formation, using a detailed conceptual model integrated with synthetic seismic simulation and attribute analysis. The model incorporates key stratigraphic features, stacked channel sands, thin shale drapes, and a critical 7–9 meter internal shale barrier, alongside structural elements such as polygonal faults. Synthetic seismic responses were generated for brine- and gas-saturated scenarios and validated against time-lapse (4D) seismic data acquired in 2010. Two conceptual migration scenarios were tested: one with CO₂ confined below the shale barrier, and another allowing upward migration into an overlying sand wedge. The second scenario successfully reproduced the observed “upward shift” anomaly, indicating a likely breach or bypass of the shale. Additionally, stratigraphic continuity attributes extracted from synthetic and real data suggest that channel terminations act as lateral plume boundaries. Quantitative metrics, including the plume coverage ratio and structural and stratigraphic margin capacity analyses, were developed to evaluate trapping mechanisms. Results show that only about 18% of the mapped stratigraphic boundary remains unfilled, demonstrating strong stratigraphic confinement, whereas approximately 85% of the structural margin area remains unutilized. These findings highlight the dominant influence of internal stratigraphy over structural features in governing CO₂ plume migration and provide valuable guidance for characterization and monitoring of future geologic carbon storage sites.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"151 ","pages":"Article 104609"},"PeriodicalIF":5.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147400312","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}