Quantitative modeling and assessment of CO₂ storage in saline aquifers: A case study in Switzerland
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Date
2025-03
Publication Type
Journal Article
ETH Bibliography
yes
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Abstract
The global temperature rise necessitates urgent action to reduce greenhouse gas emissions, with Geological Carbon Storage (GCS) emerging as a promising strategy. GCS involves injecting CO₂ into deep geological formations, particularly saline aquifers. However, ideal reservoir conditions, such as stable caprock and adequate storage capacity, are rare in regions like Switzerland. This study assesses the CO₂ storage potential in the saline aquifer at Triemli, Switzerland, aiming to explore the feasibility of decentralized, small to medium-scale storage with multiple injection points in geologically unfavorable areas. Through numerical simulations, we investigate CO₂ injection, migration, and long-term reservoir stability, bridging the gap between theoretical estimates and practical feasibility. Our findings highlight the potential of deep saline aquifers in the Swiss Molasse Basin and Folded Jura for CO₂ storage, with the study area capable of storing approximately 2 million tons of CO₂ over 30 years. Advanced injection techniques could increase this capacity to 3 million tons. These results underscore the importance of reservoir properties in optimizing CO₂ storage and provide crucial insights for guiding future GCS efforts in Switzerland and beyond, supporting informed decision-making and the implementation of decentralized storage projects.
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Publication status
published
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Book title
Journal / series
Volume
14
Pages / Article No.
100360
Publisher
Elsevier
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
CO₂ sequestration; Fluid dynamics; Numerical modeling of fluid; Switzerland
Organisational unit
03484 - Mazzotti, Marco (emeritus) / Mazzotti, Marco (emeritus)
02506 - Institut für Geophysik / Institute of Geophysics
02818 - Schweiz. Erdbebendienst (SED) / Swiss Seismological Service (SED)