Print Email Facebook Twitter Simultaneous measurement of hysteresis in capillary pressure and electric permittivity for multiphase flow through porous media Title Simultaneous measurement of hysteresis in capillary pressure and electric permittivity for multiphase flow through porous media Author Plug, W.J. Slob, E.C. Bruining, J. Moreno Tirado, L.M. Faculty Civil Engineering and Geosciences Department Geotechnology Date 2007-04-11 Abstract We present a tool that simultaneously measures the complex permittivity and the capillary pressure characteristics for multiphase flow. The sample holder is a parallel plate capacitor. A precision component analyzer is used to measure the impedance amplitude and phase angle as a function of frequency (1 kHz to 3 MHz). The complex impedance of the (partially) saturated sample is directly related to the effective complex permittivity. We have conducted main drainage and main imbibition cycles for unconsolidated sand-water-gas (CO2/N2) systems at 8-bar pressure and at temperatures between 27°C and 28°C. Hysteresis in capillary pressure and electric permittivity, as a result of phase distribution, is found between drainage and imbibition for f=3 MHz and becomes more pronounced at higher water saturations. Good agreement of the measured electric permittivity with the complex refractive index model indicates that induced polarization is not observed for 3 MHz and the water saturation is reasonably predicted. The experiments have been performed to study the capillary pressure behavior during CO2 sequestration. Subject geophysical fluid dynamicsflow through porous mediageophysical techniquespermittivityhysteresisclimate mitigationcarbon compoundsmultiphase flowgeochemistryhydrology To reference this document use: http://resolver.tudelft.nl/uuid:99197add-b1ef-4cde-a332-017543ce9a7b DOI https://doi.org/10.1190/1.2714684 Publisher Society of Exploration Geophysicists ISSN 0016-8033 Source Geophysics, 72 (3), 2007 Part of collection Institutional Repository Document type journal article Rights © 2007 Society of Exploration Geophysicists Files PDF Plug_2007.pdf 543.15 KB Close viewer /islandora/object/uuid:99197add-b1ef-4cde-a332-017543ce9a7b/datastream/OBJ/view