Fig. 3

Schematic figure of the tilted geopressured geothermal reservoir with one hot water producer well, one cold water injector well, and CO₂ injection well. The producer well withdraws hot geofluid downdip because in this production arrangement the cold water injector plays double role: it returns cold geofluid to maintain the formation pressure and prevents the supercritical gas plume which is lighter than formation fluid before mixing to rise to the caprock. Cold water drives the gas plume downdip and enhances its mixing with the formation fluid