Fig. 6. Difference in water and air distribution over the entire imaged section (15.5 mm) of the sample for (a) fast and (b) slow drainage (APS-6.0) to a capillary pressure of 490 cm. Fig. 6c. Cut-out of a small section of the sample illustrating in more detail the difference in fluid distribution between the fast (left) and slow (right) drainage processes.