Geological CO2 utilization and storage in geothermal systems offer a promising pathway for simultaneously achieving carbon management and low-carbon energy production. By utilizing CO2 as a working fluid or promoting its interaction with geological formations, geothermal systems have the potential to integrate CO2 storage, mineralization, and renewable energy recovery. However, significant scientific and engineering challenges remain in understanding and controlling the complex interactions among CO2, rock, formation water, and geothermal fluids across different spatial and temporal scales.
This session brings together research on the geological CO2 utilization and storage in geothermal systems, covering fundamental mechanisms, laboratory experiments, molecular- and pore-scale modelling, reservoir-scale simulations, and field-scale implementation. Contributions will address topics including CO2-rock-fluid interactions, CO2 dissolution and mineralization, geochemical and geomechanical processes, CO2 circulation and heat extraction, reservoir characterization and modelling, and monitoring and risk assessment. Particular emphasis will be placed on innovative technologies and integrated strategies that bridge fundamental research and field applications. By connecting insights across scales, this session aims to advance the scientific understanding and engineering development of CO2-geothermal systems, supporting large-scale geological CO2 utilization and storage and the transition toward a low-carbon energy future.