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Free keywords:
CO2 storage; Ketzin pilot site; numerical simulations;
process coupling; mechanical integrity; mineral trapping
Abstract:
Long-term integrated site behavior assessment with high spatial resolution on the reservoir scale requires a sophisticated workflow to represent the relevant processes. In our coupling concept we consider the time-dependent occurrence and significance of multi-phase flow, mechanical effects and geochemical reactions. Our numerical simulations for the pilot site Ketzin demonstrate that mechanical reservoir, caprock and fault integrity are maintained during the time of operation and that after 10,000 years CO2 dissolution is the dominating trapping mechanism and mineralization occurs on the order of 10% to 25% with negligible changes to porosity and permeability.
