Three-dimensional (3D), axisymmetric model with a cross section of the CO2-Plume Geothermal (CPG) reservoir showing grid discretization and placement of wells. The caprock bottom is located at a depth of 2475 m. The injection well is vertical and fully penetrating within the reservoir and constitutes the axis of symmetry. The production well is horizontal, circular and located just below the caprock at various distances from the injection well (here shown is 707 m). The model extends horizontally to 100 km (not shown) to minimize numerical boundary effects, with logarithmically increasing horizontal grid spacing away from the injection well but horizontal refinement of grid spacing near the production well.