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PERBAS: An International Project to Study Potential Sites for the Permanent Offshore Storage of CO2 in Marine Basalts

CO2 neutrality by 2045 requires increasing the currently worldwide achieved CO2 storage volume (40 Mt/y) to the order of tens of Gt/y. With current storage techniques, CO2 often remains in the gaseous phase, thus, free to spread underground risking unwanted leakage in the distant future. As an alternative, the mineralization of CO2 in basalts, where the vast majority (>90%) of the carbon is mineralized and fixed in carbonates within two years, offers a permanent safe storage as a solid (e.g. CarbFix, Iceland).
The international joint project PERBAS (ACT4) with partners from Norway, USA and India aims to pave the way for the commercialization of large-scale, permanent CO2 sequestration into marine basalt complexes off the coast of Norway and India. The project seeks solutions for reservoir selection, CO2 transport, injection and monitoring. PERBAS will investigate the feasibility of supercritical CO2 injection, using water in the pore space, in order to avoid the requirement to inject 20 t of water for 1 t of CO2. This would have the additional advantage that supercritical CO2 would be associated with a free gas phase, which allows the application of geophysical remote sensing for monitoring thereby reducing the number of monitoring wells required.
Within the German sub-project CO2PR, geophysical field data (seismics and electromagnetics) will be collected during a research cruise offshore Norway currently planned for 2024. The resolution and efficiency of associated inversion techniques will be made usable for large-volume (Gt) reservoirs and complemented with new AI methods to identify signals suitable for monitoring.


Sebastian Hölz1, Jörg Bialas1, Jyotirmoy Mallik2, Viktoriya Yarushina3, Stephane Polteau3, Manika Prasad4, Nimisha Vedanti5, Sverre Planke6, Ravi Sharma7, Gerald Klein8, Markus Krieger9
1GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany; 2IISER Bhopal, Bhopal, India; 3IFE, Institute for Energy Technology, Kjeller, Norway; 4Colorado School of Mines - CCUS Innovation Center, Golden, USA; 5CSIR - National Geophysical Research Institute, Hyderabad, India; 6Volcanic Basin Petroleum Research AS, Oslo, Norway; 7Indian Institute of Technology Roorkee, India; 8TEEC, Isernhagen, Germany; 9TERRASYS Geophysics, Hamburg, Germany
GeoBerlin 2023
Offshore Norway