# SOF3¶

The SOF3 is followed by a table with three columns, in which the first is the oil saturation ($$S_o$$), the second is the oil in water relative permeability ($$K_{row}$$), the third is oil in gas relative permeability ($$K_{rog}$$). The table must be terminated by a / or END. An example is reported below:

SOF3
0    0       0
0.2  0       0
0.38 0.00432 0
0.4  0.0048  0.004
0.48 0.05288 0.02
0.5  0.0649  0.036
0.58 0.11298 0.1
0.6  0.125   0.146
0.68 0.345   0.33
0.7  0.4     0.42
0.74 0.7     0.6
0.78 1       1
/


The largest oil saturation for which the oil in water relative permeability is zero is the oil in water critical saturation $$S_{owcr}$$ (0.2 in the example), and the largest oil saturation for which the oil in gas relative permeability is zero is the oil in gas critical saturation $$S_{ogcr}$$ (0.38 in the example). $$S_o$$ must increase monotonically. $$K_{row}$$ and $$K _{og}$$ can be constant or increase as $$S_o$$ increases. At the maximum oil saturation, $$K_{row}$$ must be equal to $$K_{rog}$$ or the software will return an error.