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Regional-scale brine migration along vertical pathways due to CO₂ injection - Part 2 : A simulated case study in the North German Basin

Kissinger, Alexander; Noack, Vera; Knopf, Stefan; Konrad, Wilfried; Scheer, Dirk; Class, Holger

Abstract:
Saltwater intrusion into potential drinking water aquifers due to the injection of CO₂ into deep saline aquifers is one of the hazards associated with the geological storage of CO₂. Thus, in a site-specific risk assessment, models for predicting the fate of the displaced brine are required. Practical simulation of brine displacement involves decisions regarding the complexity of the model. The choice of an appropriate level of model complexity depends on multiple criteria: the target variable of interest, the relevant physical processes, the computational demand, the availability of data, and the data uncertainty. In this study, we set up a regional-scale geological model for a realistic (but not real) onshore site in the North German Basin with characteristic geological features for that region. A major aim of this work is to identify the relevant parameters controlling saltwater intrusion in a complex structural setting and to test the applicability of different model simplifications. The model that is used to identify relevant parameters fully couples flow in shallow freshwater aquifers and deep saline aquifers. This model also i ... mehr


Zugehörige Institution(en) am KIT Institut für Technikfolgenabschätzung und Systemanalyse (ITAS)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator DOI: 10.5194/hess-21-2751-2017
ISSN: 1027-5606, 1607-7938
URN: urn:nbn:de:swb:90-711472
KITopen ID: 1000071147
Erschienen in Hydrology and earth system sciences
Band 21
Heft 6
Seiten 2751-2775
Lizenz CC BY 3.0 DE: Creative Commons Namensnennung 3.0 Deutschland
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