Carbon dioxide (CO2) injection design to maximise underground reservoir storage and enhanced oil recovery (EOR)

R. Qi, T.C. Laforce and M.J. Blunt,     Imperial College London, UK


We propose designs for CO2 injection to maximise storage in aquifers and to maximise both CO2 storage and enhanced oil recovery (EOR) in oil reservoirs. A review of simulation and experimental studies suggests a carbon storage strategy where CO2 and brine are injected into an aquifer together followed by brine injection alone. Based on simulation studies, this can render 80–95% of the CO2 immobile in pore-scale droplets within the porous rock. The method does not rely on an impermeable cap rock to contain the CO2; furthermore, the favourable mobility ...

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