LAUSR

Experimental data are presented on measuring the complex dielectric permittivity (CDP) of clays completely moistened with distilled water in the frequency range from 1 kHz to 8.5 GHz at temperatures from –15 to +25°C. Modeling of the experimental dependences is carried out by a multirelaxation model that takes into account relaxation of free and bound water, as well as relaxation at the bound water – mineral and bound water–air interfaces. 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.