Permeability modeling of the Lower Cretaceous marly chalks in the Danish North Sea
This study outlines a approach for relating permeability and capillary pressure to specific surface and porosity in the clay rich chalk of the Lower Cretaceous in the Danish North Sea.
The low-permeability marly chalk reservoirs Sola and Tuxen found in the Danish North Sea are challenging to interpret in conventional ways.
The varying clay content either situated as separating layers or mixed within the chalk affects the reservoir properties in terms of permeability and capillary forces.
In this study we use existing porosity, Klinkenberg permeability and mercury injection capillary data to show how we can consistently model the permeability and capillary pressure from porosity and specific surface.