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Geological Society, London, Engineering Geology Special Publications
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Geological Society, London, Engineering Geology Special Publications; 1997; v. 12; p. 355-363;
DOI: 10.1144/GSL.ENG.1997.012.01.33
© 1997 Geological Society of London

Section 5: Laboratory studies

Thermal conductivities of argillaceous sediments

K. Midttømme1, E. Roaldset1 & P. Aagaard2

1 Department of Geology and Mineral Resources Engineering, Norwegian University of Science and Technology, 7034 Trondheim, Norway
2 Department of Geology, University of Oslo, P.O. Box 1047, Blindern, 0315 Oslo, Norway

Thermal conductivities of selected samples of shales, clay- and mudstones from the Norwegian Continental Shelf have been measured with a divided bar apparatus. The samples investigated are from conventional cores and side wall cores. Thermal conductivities for watersaturated samples measured perpendicular to the layering vary from 0.79 to 1.14 W/m K. The conductivities measured parallel to the layering are up to 1.7 times higher than those measured in the perpendicular direction. The investigation also confirms that the temperature has an influence on the conductivity. A model to predict thermal conductivity, based on water content and mineralogy has been proposed and tested.