Thermal conductivity of sedimentary rocks as function of Biot’s coefficient

Tobias Orlander, Lisa Pasquinelli, J.J. Asmussen, A.A. Marczyński, E. Adamopoulou, H. Milsch

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

A theoretical model for prediction of effective thermal conductivity with application to sedimentary rocks is presented. Effective thermal conductivity of sedimentary rocks can be estimated from empirical relations or theoretically modelled. Empirical relations are limited to the empirical conditions and should be applied with caution. Theoretical models are typically porosity-based and unable to capture the complexity of sedimentary rocks. We propose a theoretical model, derived from measurable para-meters including both quantity and connectivity of the constituents. Because the thermal conductivity of solids is typically orders of magnitude larger than that of fluids, grain contacts constituting the solid connectivity governs the heat transfer of sedi-mentary rocks and hence should be the basis for modelling effective thermal con-ductivity. By introducing Biot’s coefficient, α, we propose (1 – α) as a measure of the solid connectivity and show how effective thermal conductivity of water saturated and dry sandstones can be modelled.
Original languageEnglish
Title of host publicationPoromechanics VI : Proceedings of the Sixth Biot Conference on Poromechanics
Number of pages8
PublisherAmerican Society of Civil Engineers
Publication date2017
Publication statusPublished - 2017
Event6th Biot Conference on Poromechanics - Ecole des Ponts ParisTech and IFSTTAR, Paris, France
Duration: 9 Jul 201713 Jul 2017
Conference number: 6
https://biot2017.sciencesconf.org/

Conference

Conference6th Biot Conference on Poromechanics
Number6
LocationEcole des Ponts ParisTech and IFSTTAR
CountryFrance
CityParis
Period09/07/201713/07/2017
Internet address

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