Effect of a powerful low-frequency signal on an anisotropic medium over hydrocarbon

Abstract

The article analyses the interaction of a powerful low-frequency signal with an anisotropic medium over hydrocarbon deposits. The behaviour of the real and phase components of the surface impedance of the medium above the deposit in the mode of dual-frequency signals is studied. The analysis of the components of the surface impedance of the medium over hydrocarbons for electromagnetic waves with right and left circular polarizations is carried out depending on the permittivity and frequency of the probing signals. The obtained research results can be used in exploration geophysics to identify the environment above the deposits by the size and nature of the material and phase components of the surface impedance of the surface layer above the hydrocarbons.

Characteristics of anisotropic media over hydrocarbons in the mode of frequency-modulated signals

“…These requirements, as well as the prospects for their application, are most consistent with electromagnetic methods (EMM) [2]. The requirements of modern economics and prospecting geophysics require the improvement of field testing technics [3] and their efficiency, especially in complex geological conditions. Improvement of EMM search for hydrocarbons (oil and gas) shows their high practical significance [4].…”

Determination of reflection coefficient contrast in medium over hydrocarbon accumulation

“…The problems considered in this article are relevant for the creation of methods for searching and delineation of hydrocarbon accumulation [1 -3]. Increasing the accuracy of hydrocarbon boundary delineation can be achieved on the basis of studies of the real and phase components of the surface impedance of medium over accumulation using dual-frequency signals [4]. The discovery of new hydrocarbon accumulation is becoming the most important task for the improvement of the energy sector in Belarus and Uzbekistan.…”

Hydrocarbon exploration technique based on the ratio coefficient measurement of two-frequency amplitudes

“…The analysis of interaction of electromagnetic waves (EMW) with an anisotropic medium above an HC field, which results in electro-physical and electrochemical processes, helps to differentiate between hydrocarbon deposits. The differentiation is more precise if the characteristics of the signals used can be varied [4,5]. Currently, the interaction of two-frequency electromagnetic waves with anisotropic media over hydrocarbon fields is normally analyzed to more accurately determine the field boundaries.…”

“…In most cases, the behavior of the real constituent component of a dielectric constant tensor is investigated. The signal characteristics depend on different sources of electromagnetic wave radiation that have amplitude and frequency ratio coefficients in the modes of powerful low-frequency and highfrequency signals [5]. In 2008 and 2010, large multi-client 3D CSEM surveys were conducted in the Barents Sea.…”