Oil recovery at breakthrough (RF at BT) versus Doorwar’s number N_I. The abscissa error bars account for the fluid viscosities, the IFT and the injection flow-rate uncertainties. The ordinate error bars account for the saturation confidence intervals and the temporal resolution of the CT-monitoring. Square, circle and triangle markers respectively refer to corefloods conducted at 0.06, 1.4 and 7.0 cc/min. Plain markers refer to corefloods conducted before the core ageing (water-wet case). Empty markers refer to corefloods conducted on the aged core (oil-wet).