Modifications to Kozeny–Carman model to enhance petrophysical relationships
Amir M. S. Lala
Geophysics Department, Ain Shams University
Received: 25 Jan 2017 – Accepted for review: 04 Feb 2017 – Discussion started: 07 Feb 2017
Abstract. The most commonly used relationship relates permeability to porosity, grain size, and tortuosity is Kozeny–Carman formalism. When it is used to estimate the permeability behavior versus porosity, the other two parameters (the grain size and tortuosity) are usually kept constant. Here, we investigate the deficiency of the Kozeny–Carman assumption and offer alternative derived equations for the Kozeny–Carman equation, including equations where the grain size is replaced with the pore size and with varying tortuosity. We also introduced relationships for the permeability of shaly sand reservoir that answer the approximately linear permeability decreases in the log-linear permeability-porosity relationships in datasets from different locations.
Lala, A. M. S.: Modifications to Kozeny–Carman model to enhance petrophysical relationships, Solid Earth Discuss., doi:10.5194/se-2017-8, in review, 2017.