Electrical tortuosity, Kozeny’s factor and cementation factor modelled for chalk

Konstantina Katika, Ida Lykke Fabricius

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Abstract

Based on the electrical properties of chalk from the North Sea and Stevns Klint and on published data, we explore how klinkenberg corrected permeability from experimental data relate to porosity and electrical resistivity. In the current study we use electrical conductivity data of partially water saturated core plugs to determine the cementation factor, m. This value differs from the one Archie used to describe his equation and best describes the formation factor based on experimental data. Based on this m, we determine the formation factor, F, and the tortuosity, τ. We use this value of τ, to calculate permeability based on electrical resistivity data. We also calculate the permeability based on a simple porosity model. Finally, we redefine Kozeny’s factor, c, using Carman’s model based on tortuosity and the model based on porosity. This resulted in a third modelled permeability, which describes the experimental data in high accuracy.
Original languageEnglish
Title of host publicationProceedings of the 3rd International Workshop on Rock Physics
Number of pages4
Publication date2015
Pages1-4
Publication statusPublished - 2015
Event3rd International Workshop on Rock Physics - Perth, Australia
Duration: 13 Apr 201517 Apr 2015
Conference number: 3
http://3iwrp.org/index.asp

Conference

Conference3rd International Workshop on Rock Physics
Number3
CountryAustralia
CityPerth
Period13/04/201517/04/2015
Internet address

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