Understanding the chemico-mineralogical changes of caprock sealing in deep saline CO2 sequestration environments: A review study

The long-term CO2 storage in deep saline aquifers mainly depends on the performance of caprock. However, one of the major concerns with deep saline CO2 sequestration at geological time scales is the back-migration of injected CO2 through the caprock due to chemico-mineralogical variations with time. Several studies, including geo-chemical models and laboratory tests, have investigated the behaviours of caprock in the presence of CO2. This paper...