Analysis and Risk Mitigation measures for Induced Seismicity in supercriTICal gEothermal systems
This is why the EU-funded ARMISTICE project will couple CO2 flow models with high-temperature rheology of rock and faults. It will also extend current models of subsurface CO2 and water flow to very high temperatures, above 375 ºC. Ultimately, it will determine the potential for induced seismicity in CCS-SCGS and the conditions for safe exploitation.
Current models of subsurface flow of CO2 and H2O systems are limited to water’s subcritical temperature: in WP1 we address the problem by incorporating the full-range of fluids’ equation of state to determine the optimal conditions for employing CO2 as a geothermal fluid in volcanic areas. We will achieve the objective thanks to the complementary experience of the ER on SCGS and of the host on CCS. Based on the results of flow behavior, in WP2 we will determine the potential for induced seismicity in CCS-SCGS systems and the conditions for safe exploitation. Once again, the decisive advantage to a successful implementation will rely on the complementary nature of the ER past work on fractures and discontinuity modelling, and the one of the host on fluid injection-induced seismicity. ARMISTICE will be strongly based on a career development plan backed by training on multi-phase and multi-component fluid flow, CCS and transferable skills that will make the ER a global leader in geoenergies research.