Abstract
In this paper, the adaptability of Kozeny's equation was discussed on the relationship between permeability, porosity and internal surface area. The method of determination of surface area as employed in this work result in the measurement of physical adsorption of nitrogen, using gaschromatography, with the aid of the theory of isothermal adsorption by Brunauer, Emmett and Teller (BET).
In this experiment, the surface area of rocks showed fairly large values of about 27 to 51.1 square meters per cubic centimeter of pore volume.
Kozeny's constants were calculated with permeability and surface area of each rock. These constants were by far larger than 5, as determined theoretically. However, it was believed that the Kozeny's equation appries when it was corrected by roughness for surface.
It was also shown that the permeabilities might be related with the surface areas for unit pore volume.
