REGULARITIES OF CHANGE IN PROPERTIES OF THE ANISOTROPIC MEDIUM OVER HYDROCARBONS FROM SENSING MODES
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Abstract
The article discusses the analysis of the patterns of changes in the properties of an anisotropic medium over hydrocarbons from sounding modes when using frequency modulation of signals and mixed amplitude-frequency modulation. The components of the surface impedance of the medium above hydrocarbons were modeled. A study was carried out of the characteristics of the environment above hydrocarbon accumulations for frequency-modulated signals from the modulation index, the frequency ratio coefficient and the conductivity of the dielectric filler of the host rocks. For amplitude-frequency modulated signals, the amplitude and phase characteristics of the combinational components of electromagnetic waves with two types of circular polarization are analyzed. Recommendations are given for the development of methods for searching for hydrocarbons based on frequency-modulated and amplitude-frequency-modulated signals. Methods for increasing the information content of electromagnetic methods of electrical prospecting are shown. The research results are relevant for geological exploration work.
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