Experimental study on the fracture behavior of sandstone after ScCO2–water–rock interaction

Geological sequestration of carbon dioxide is one way of offsetting carbon emissions. During geological CO2 sequestration, any effects that CO2 may have on the physical and mechanical properties of the caprock can potentially affect the stability of its storage. This paper investigates the fracturing behavior of sandstone immersed in water dissoluted with supercritical carbon dioxide (ScCO2). For this purpose, the fracture toughness of sandstone...