To estimation of polarization characteristics of the medium on the data of multi-frequency measurements in the method alternating current resistance

 

A. F. Shestakov / News of the Ural State Mining University. 2021. Issue 1(61), pp. 102-108

https://doi.org/10.21440/2307-2091-2021-1-102-108  

The relevance of the work is due to the need to extract additional information in the study of the polarization properties of the geological environment from experimental data in the method of ac resistance using multifrequency measurements. The introduction provides a brief review of the literature on the problem of studying the polarization properties of rocks in the frequency domain and the method of frequency dispersion, which is successfully used in prospecting and exploration works in sulfide and copper pyrite deposits. The questions of determining the polarizability of the medium in the frequency domain and the parameter of the polarization process depending on the structural and petrophysical characteristics are discussed.
Purpose of this research is to compare the characteristic features of studying the polarization properties of a medium in the frequency domain and to establish the relationship between polarizability and the frequency dispersion coefficient of electrical resistance. To propose an algorithm for determining the polarization characteristics of a medium from the data of multifrequency measurements in the method of resistances on alternating current.
Research methodology: substantiation of the choice of the model of induced electric polarization in the frequency domain and the peculiarities of its application to establish the relationship between the frequency dispersion coefficient and the apparent polarizability of the medium. Research methods: theoretical calculations and comparative analysis of the obtained dependences on the model parameters.
Results of work. The choice of the model of induced electric polarization Cole-Cole in the frequency domain is substantiated to establish a relationship between the frequency dispersion coefficient and the apparent polarizability of the medium. The possibility of using multifrequency measurements of electrical resistance to study the polarization characteristics of a medium based on this model is shown. An algorithm has been developed and expressions have been obtained that make it possible to determine the polarizability of the medium and the parameter of the relaxation time from the data of measuring the apparent resistance at three frequencies in the method of electric sounding on alternating current.
Application area. The obtained results can find application in the processing of data from conductive electrical soundings on alternating current, for the correct interpretation of the frequency effect and the study of the polarization properties of the medium, in particular, when research by the method of frequency dispersion.

Keywords
: electrical survey, resistivity method, alternating current, spectral induced polarization, apparent resistance, chargeability (polarizability).

 

REFERENCES

1. Kononenko I. I., Rodionov P. F., Chelichkov A. I. 1973, Application of the VP method on alternating current in ore deposits. Phase and amplitude measurements of induced polarization in ore deposits. Sverdlovsk, pp. 86–111. (In Russ.)
2. Zaborovskiy A. I. 1963, Electrical survey. Moscow, 424 p. (In Russ.)
3. Komarov V. A. 1980, Prospecting by the method of induced polarization. 2-nd ed. Leningrad, 391 p. (In Russ.)
4. Ulitin R. V., Astrakhantsev G. V. 1968, On frequency dispersion of electrical resistance and polarizability of rocks. Electrometry in the search for sulfide deposits. Sverdlovsk, pp. 49–54. (In Russ.)
5. Astrakhantsev G. V., Ulitin R. V. 1973. Phenomenological relations in induced polarization of electrically conducting minerals. Phase and amplitude measurements of induced polarization in ore deposits. Sverdlovsk, pp. 18–22. (In Russ.)
6. Kononenko I. I., Rodionov P. F., Ulitin R. V., Chelichkov A. I. 1973, Methods and techniques of field work and cameral processing in the method of VP on alternating current. Phase and amplitude measurements of induced polarization in ore deposits. Sverdlovsk, pp. 71–85. (In Russ.)
7. Kormiltsev V. V., Mezentsev A. N. 1989, Electrical exploration in polarizing environments. Sverdlovsk, 128 p. (In Russ.)
8. Fedorova O. I., Gorshkov V. Yu. 2020, New technique of electrical soundings: theoretical modeling and experimental application in study of state of the soil dam. Acta Geodaetica et Geophysica, vol. 55, issue 1, pp. 1–9. https://doi.org/10.1007/s40328-019-00277-1
9. Shestakov A. F. 2018, To the question of the method of resistance on alternating current with application of Schlumberger array. Uralskii geophyzicheskii vestnik, no.1(31), pp. 42–48. (In Russ.) https://doi.org/10.25698/UGV.2018.1.6.42
10. Shestakov A. F. 2019, On the alternating current resistivity technique with the use of the Schlumberger array. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal [News of the Higher Institutions. Mining Journal], no. 2, pp. 59–69. (In English) https://doi.org/10.21440/0536-1028-2019-2-59-69
11. Pelton W. H., Wards S.H., Hallow P. G., Sills W. R., Nelson P. H. 1978, Mineral discrimination and removal of inductive coupling with multifrequency IP. Geophysics, vol 43, no. 3, pp. 588–600. http://dx.doi.org/10.1190/1.1440839
12. Revil A., Eppehimer J. D., Skold M., Karaoulis M., Godinez L., Prasad M. 2013, Low-frequency complex conductivity of sandy and clayey materials. Journal of Colloid and Interface Science, vol. 398, pp. 193–209. https://doi.org/10.1016/j.jcis.2013.01.015
13. Revil A. 2013, Effective conductivity and permittivity of unsaturated porous materials in the frequency range 1 mHz–1GHz. Water Resources Research, vol. 49, issue 1, pp. 306–327. https://doi.org/10.1029/2012WR012700
14. Binley A., Slater L. D., Fukes M., Cassiani G. 2005, Relationship between spectral induced polarization and hydraulic properties of saturated and unsaturated sandstone. Water Resources Research, vol. 41, issue 12, pp. 1–13. W12417. http://dx.doi.org/10.1029/2005WR004202
15. Titov K., Komarov V., Tarasov V., Levitski A. 2002, Theoretical and experimental study of time domain-induced polarization in water-saturated sands. Journal of Applied Geophysics, vol. 50, issue 4, pp. 417–433. https://doi.org/10.1016/S0926-9851(02)00168-4
16. Ulrich C., Slater L. D. 2004, Induced polarization measurements on unsaturated, unconsolidated sands. Geophysics, vol. 69, no. 3. P. 762–771. https://doi.org/10.1190/1.1759462
17. Cole K. S., Cole R. H. 1941, Dispersion and Absorption in Dielectrics I. Alternating Current Characteristics. Journal of Chemical Physics, vol. 9, issue 4, pp. 341–351. https://doi.org/10.1063/1.1750906
18. Astrakhantsev G. V., Ulitin R. V. 1968, Complex electrical conductivity of rocks at sound frequencies and ways to study it in the field. Electrometry in the search for sulfide deposits. Sverdlovsk, pp. 41–47. (In Russ.)
19. Hallof P. G. 1964, A comparison of the various parameters employed in the variable-frequency induce-polarization method. Geophysics, vol.29, no. 3, pp. 425–433. https://doi.org/10.1190/1.1439376
20. Kormiltsev V. V. 1973, Induced polarization of models and samples of rocks at alternating current. Phase and amplitude measurements of induced polarization in ore deposits. Sverdlovsk, pp. 23–34. (In Russ.)
21. Ulitin R. V., Bashmakov A. A., Skurikhina V. M., Titlinov V. S. 1968, Method of searching for sulfide deposits by the method of frequency dispersion (on the example of pyrite deposits in the Urals). Electrometry in the search for sulfide deposits. Sverdlovsk, pp. 55–69. (In Russ.)

The article was received on December 25, 2020

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