Fluid Reference K final, (md) Damage Ratio (DR), % Reduction in Permeability, % Sample 1 501 65 35 Sample 2 550 71 29 Sample 3 601 77.5 22.5 Sample 4 532 68.65 31.35 Sample 5 550 71 29 Sample 6 548 70.71 29.29 Sample 7 550 70.97 29.03

Table 7: change in permeability and reduction in permeability of ceramic disk.