CO2-brine-caprock interaction: Reactivity experiments on mudstone caprock of South-west Hub geo-sequestration project

This study aims at focusing on the geo-chemical reactions of caprock upon injection of supercritical CO2 (ScCO2) under deep saline aquifer's conditions. The caprock samples were obtained at a depth of 979 m in the DMP Harvey-2 well, which is recognized as mudstone in the Lesueur Formation of the South-west Hub geo-sequestration project located 120 kilometres south of Perth in Australia. Geo-chemical reactions were conducted in a reaction chamber...