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http://dx.doi.org/10.5467/JKESS.2007.28.7.838

The Measurement System and Physical Property of Unconsolidated Sample under Trinxial Pressure  

Bae, Wi-Sup (Department of Earth Environmental Sciences, Sejong University)
Chung, Tae-Moon (Department of Earth Environmental Sciences, Sejong University)
Kwon, Young-Ihn (Petroleum and Marine Resources Division, Korea institute of Geoscience and Mineral Resources)
Kim, Hyun-Tae (Petroleum and Marine Resources Division, Korea institute of Geoscience and Mineral Resources)
Publication Information
Journal of the Korean earth science society / v.28, no.7, 2007 , pp. 838-846 More about this Journal
Abstract
A measurement system of tri-axial pressure was designed and constructed to measure permeability and resistivity under changing confining pressure. The system was designed to measure the permeability and resistivity of a core simultaneously, consisting of tri-axial supporting device and sets of dual-flow measurement. In this measurement system the permeability and resistivity of a sample can be directly measured and porosity can be obtained using Archie's laws. As for physical properties, artificial core samples are made from mixtures of standard commercial sand and mud of illite. In-situ sediment cores were sampled at the water-depth of 1,800m in the Ulleung Basin East Sea. In order to investigate the effects of confining pressure changes on physical properties, permeability and resistivity changes were monitored with increasing confining pressure. In this study, it was found that with the increase of confining pressure, permeability and porosity tend to decrease and resistivity tend to increase exponentially.
Keywords
unconsolidated sediments; tri-axial measurement system; confining pressure; physical properties; Ulleung Basin;
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