Optimized Geologic Carbon Storage

Participation in EGU General Assembly 2022

Iman Rahimzadeh Kivi will give a virtual presentation at the European Geosciences Union (EGU) General Assembly 2022, in Vienna, Austria, 23-27 May 2022:

Kivi, I. R., Pujades, E., Rutqvist, J. and Vilarrasa, V., 2022. Thermal stressing is likely to reactivate distant faults in hot sedimentary aquifers. EGU22-5332 | Presentations | ERE5.1

This work looks deeper into thermo-hydro-mechanical (THM) processes of injecting relatively cold fluids into hot ‎underground formations. This is relevant to CCS as the injected supercritical CO2 into the subsurface may have a lower temperature than the reservoir ‎rock. The temperature difference is controlled by the surface temperature and its gradient, varying across basins. As an upper ‎bound to this temperature range, we have investigated THM mechanisms raised by water circulation in a Hot Sedimentary ‎Aquifer (HAS). ‎We found that cold water reinjection may give rise to thermal stresses that are ‎transmitted much ahead of the cooled region ‎and are likely to destabilize faults located ‎far away from the doublet and result in induced seismicity. ‎

EGU 2022

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