Effect of injection rate on the (a) gas saturation, (b) pressure buildup at the three selected times and (c) the evolution of acid gas trapping. Note that gas saturation and pressure buildup coincide at 10 000 years for the three cases (where Base case, Case 1 and Case 2 indicate that the injection rate values are 0.229 kg/s CO₂ + 0.160 kg/s H₂S, 0.458 kg/s CO₂ + 0.320 kg/s H₂S and 0.1145 kg/s CO₂ + 0.080 kg/s H₂S, respectively).