Enhanced carbon utilization and storage: An application of nonionic-based binary surfactant CO foam.

Mobility control of CO is important for effective subsurface utilization and sequestration of anthropogenic CO in depleted formations. This not only enhances oil recovery but also increases CO storage efficiency, addressing a key challenge for a future zero-carbon economy. In this study, novel techniques were developed by injecting CO foam generated with a nonionic-based binary surfactant system to improve geological CO storage and to co-optimize carbon utilization and storage efficiency in high salinity carbonate porous media, based on hypotheses from our previous works.