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http://dx.doi.org/10.7582/GGE.2018.21.4.220

Thermal Conductivity of Dry and Saturated Cores from Ulleung Island in a Constant Temperature and Humidity Condition  

Lee, Keun-Soo (Center for Deep Subsurface Research, Korea Institute of Geoscience and Mineral Resources (KIGAM))
Lee, Sang Kyu (Center for Deep Subsurface Research, Korea Institute of Geoscience and Mineral Resources (KIGAM))
Lee, Tae Jong (Center for Deep Subsurface Research, Korea Institute of Geoscience and Mineral Resources (KIGAM))
Publication Information
Geophysics and Geophysical Exploration / v.21, no.4, 2018 , pp. 220-230 More about this Journal
Abstract
When thermal conductivity of rock is measured with PEDB (Portable Electronic Divided Bar) in a laboratory, it can be greatly influenced by the change of room temperature. Therefore, measuring the thermal conductivity in a thermo-hygrostat is necessary, where it can remain in its constant temperature and humidity condition. In this study, a system for thermal conductivity measurement in a thermo-hygrostat has been set up and the thermal conductivities for the 45 samples collected from GH3 and GH4 boreholes in Ulleung Island have been measured both in dry and saturated conditions. Also, the correlations between those thermal conductivities, density, and effective porosity have been discussed. As a result of correlation analysis among the thermal conductivity, density, and effective porosity, it showed higher correlation with dry samples than saturated samples. Especially, thermal conductivity ratio between saturated and dry conditions shows very high correlation ($R^2=0.90$) with effective porosity.
Keywords
thermal conductivity; constant temperature & humidity; PEDB; Ulleung Island; effective porosity; density; correlation;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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