ABSTRACT
Carbon dioxide is a greenhouse gas which cause the global warming. The geological carbon sequestration is one of ways to reduce the amount of atmospheric carbon dioxide. Among various sites such as hydrate-bearing sediments, coal seam etc., saline aquifer is one the possible sites for the geological carbon sequestration because saline aquifer has the larger volume capacity than others. Thus, it is important to store as much carbon dioxide as possible in aquifers with the limited volume space. In this study, we conducted micro-model experiments and PNM (pore network model) numerical analysis to increase the carbon dioxide injection efficiency using surfactants. Finally, the technique to enhance the carbon dioxide injection efficiency through surfactants was developed for the geological carbon sequestration
