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An Assessment of the CO2 Fate at Smeaheia, A Potential Large-Scale Storage Site in Norway

Summary Field scale simulation studies are presented for the Smeaheia storage prospect, to assess storage capacity, CO2 distribution, long-term CO2 dissolution and temperature effects. The reservoir selected for storage has pressure communication with a neighbouring fault block, where hydrocarbon production will be ongoing when storage takes place. A sensitivity analysis is carried out to quantify how this depletion affects the storage capacity. Long term simulations up to 20,000 years are also reported to model the evolution of structural, residual and solubility trapping over time. Finally, temperature effects on the CO2 plume distribution are investigated.