Geological screening for onshore CO₂ storage in the Rio Bonito formation, Paraná Basin, Brazil

A growing number of countries have set ambitious climate targets and recognized the potential of CO₂ geological storage. Brazil's goal is to neutralize carbon emissions by 2050. The Paraná Basin is one of the most favorable onshore sedimentary basins for geological storage of CO₂ in Brazil. This extensive sedimentary basin presents a privileged location in the south and southeast regions, where the largest stationary CO₂ emitters are concentrated. Our results showed Rio Bonito Formation siliciclastic deposits present pairs of reservoir-seal rocks with adequate thicknesses and depths for stratigraphic CO₂ trapping. The screening allowed us to define a favorability map area, which will be the basis for subsequent detailing and characterization studies on the Rio Bonito Formation rocks and the location of CO₂ injection sites, thus contributing to the mitigation of the impacts of this gas in climate change.