Fig. 11

Correlation between measured permeabilities (by using air K_Air or argon K_Ar as permeating fluid) and predicted permeabilities (K_Pre). Tested models are as follows: a the Katz-Thompson Model (K-T Model), b the Winland Model, c the Dastidar Model, d the Kozeny-Carman Model (K–C Model), e the capillary tube model, f the Bohnsack Model (Lms) for mud-supported limestones, g the Global Porosity–Permeability Transform (GPPT Model), and h the Saki Model. The dashed lines indicate a variation factor with a value of 2.5 from a perfect fit. Except for the capillary tube model e permeability measurements and permeability calculations were done on the same samples applying porosities derived from different measurement methods (Φ_Hg, Φ_He, Φ_Ar, and Φ_BIB-SEM)