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GRc=IGR*200 IGR=((GR-GR.Min)/(GR.Max-GR.Min)) Perfo=If( Perfo>=1,Perfo+1,Perfo) LITHO=If(GRNorm<50,4,If(GRNorm>85,2,3)) LITHO=If(GRNorm<70,4,If(GRNorm>85,2,3)) LITHO=If(GRNorm<60,4,If(GRNorm>75,2,3)) LITHO=If(GRNorm<60,4,If(GRNorm>80,2,3)) LITHO=If(GRNorm<60,4,If(GRNorm>70,2,3)) LITHO=If(GRNorm<55,4,If(GRNorm>75,2,3))
0 undef 1 shale 2 siltstone 3 sandstone 4 coal
PERM_TRF=If( Geology\Zone_and_Lithology\LITHO=4,Pow( 10, 22*Poro_Cutoff-1.8),PERM_TRF) PERM_TRF=If( Geology\Zone_and_Lithology\LITHO=3,Pow( 10, 18*Poro_Cutoff-2.2),PERM_TRF) PERM_TRF=If( Geology\Zone_and_Lithology\LITHO=2,Pow( 10, 15*Poro_Cutoff-2.5),PERM_TRF)