Temperature Dependence of Electrical Resistivity - Part I: Experimental Investigations of Hydrothermal Fluids

The temperature dependence of electrical properties of single-component brines was extensively studied up to supercritical condi- tions. However, only very few data are available for multicomponent brines, representing natural geothermal fluid compositions. We present a new measuring cell, designed...

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Bibliographic Details
Published in:Energy procedia 2015-08, Vol.76, p.240-246
Main Authors: Kummerow, Juliane, Raab, Siegfried
Format: Article
Language:English
Subjects:
electrical resistivity of fluids
laboratory experiments
supercritical fluids
supercritical geothermal reservoir
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Summary:The temperature dependence of electrical properties of single-component brines was extensively studied up to supercritical condi- tions. However, only very few data are available for multicomponent brines, representing natural geothermal fluid compositions. We present a new measuring cell, designed to investigate electrical resistivities of mixed salt solutions at conditions simulating su-percritical hydrothermal reservoirs. The cell was tested at 23MPa and 23 – 380 °C on a diluted aqueous solution of NaCl, CaCl2, and K2SO4, simulating the Icelandic Krafla hydrothermal system. The measured data are used to calibrate resistivity measurementson fluid saturated rock samples, which are presented in an associated paper.
ISSN:1876-6102
1876-6102
DOI:10.1016/j.egypro.2015.07.854