CO2 storage capacity of geological structures located within Polish Lowlands' Mesozoic formations

The paper presents results on recognition of geological structures for CO2 storage within Mesozoic brine aquifers (Lower Cretaceous, Lower Jurassic, Lower and Upper Triassic) of Polish Lowlands. Basing on criteria issued in: The best practice for CO2 storage of in saline aquifers, 37 locations were chosen, combined with 48 structures suitable for underground carbon dioxide storage needs. Eleven of them contain two reservoir horizons within the same location. Capacity calculations for chosen structures (volumetric one and dissolution based one) were executed using a unified methodology, accepted by the EU GeoCapacity project Board. Total capacity of these structures comes to 22 342 Mt (that is: volumetric 17 490 Mt, dissolution based 4852 Mt), considering capacities from several dozen up to over 2 000 Mt of carbon dioxide. The defined capacity equals Poland’s carbon dioxide emission for 70 years. 111