Sub- and super-critical carbon dioxide permeability of wellbore materials under geological sequestration conditions: An experimental study

Carbon capture and storage has attracted attention as a feasible solution to global warming caused by anthropogenic emissions of greenhouse gases. The injection wells and well cement provide the wellbore integrity necessary for the long-term storage of carbon dioxide (CO2). To date, ordinary Portland cement (OPC) has been used in injection wells, and its survival has been questioned as it is unstable in CO2-rich environments. Therefore, an...