The role of natural fractures of finite double-porosity aquifers on diffusive leakage of brine during geological storage of CO2

The diffusive leakage rate (DLR) of brine from a finite fractured aquifer into intact overlying and underlying layers during geosequestration of carbon dioxide is modeled using a two-dimensional radial domain. To handle the interaction between aquifer and caprock or overlying layer (underlying layer), continuities of pressures and fluid fluxes are taken into account at the aquifer-caprock interface. In order to solve this problem, Laplace...