Permeability Modeling in Clay-Rich Carbonate Reservoir

In this study, we investigate several published methods derived from Kozeny’s equation for permeability evaluation of the Lower Cretaceous marly chalk formations in the Danish North Sea. Using core measurements and well-logging data, we evaluate and compare controlling parameters for permeability calculation from spectral gamma ray, electrical resistivity, nuclear magnetic resonance, and sonic velocity logs. We provide a practical approach for modeling permeability at the well-log scale. We provide the obtained parameters for best fit according to each method for permeability modeling of clay-rich carbonate in the Danish North Sea Valdemar area.