Test cases 1, 8, and 9: non-isothermal model: time evolution of (a) gas pressure, (b) hydrate saturation, (c) temperature distributions at 6 and 36 months of CO₂ injection, and (d) total mass of CO₂ gas injected after 40 months of injection for three different values of injection pressure (P _inj) in porous layer. Injection parameters are same as given in Table 1 except P _inj.