Modeling of dielectric relaxation in clays at negative and positive temperatures
Experimental data on measuring the complex dielectric constant (CDP) of clays with full moistening with distilled water in the frequency range from 1 kHz to 8.5 GHz at temperatures from -15 to +25 °C are presented. The modeling of the dependences of is carried out by a multirelaxation model that takes into account the relaxation of free and bound water, as well as relaxation at the bound water - mineral and bound water - air boundaries. It is shown that at temperatures below -5 °C, a relaxation process appears in the CDP spectrum due to polarization at the bound water - ice or ice - mineral interface. The relationship between the parameters of this relaxation process and the petrophysical characteristics of the rock is found.
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Keywords
complex dielectric constant, dielectric relaxation, interfase polarization, kaolin clay, bentonite clay, bound waterAuthors
| Name | Organization | |
| Repin A.V. | Omsk State Pedagogical University | repinrew@mail.ru |
| Rodionova O.V. | Omsk State Pedagogical University | olga_vk07@list.ru |
| Kroshka E.S. | Omsk State Pedagogical University | smallermoon@mail.ru |
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