TY - JOUR
T1 - Application of the acoustic–electric method to estimate the mineralisation of natural water in contact with rocks
AU - Bespal'ko, Anatoly
AU - Surzhikov, Anatoly
AU - Fedotov, Pavel
AU - Slepchenko, Galina
AU - Pomishin, Evgeny
AU - Dmitrieva, Sofya
PY - 2020/10
Y1 - 2020/10
N2 - In this study, mechanical-electrical transformations were excited in heterogeneous solid materials. Electromagnetic signals were excited in rock samples via determined acoustic pulses. The main patterns of changes in the electromagnetic signals' amplitude–frequency parameters at the contacts of the rock samples with distilled and mineralised water were determined. We find that contact with distilled water decreases the electromagnetic signal and spectral component amplitudes, while contact with brine leads expands the spectrum. The laws determining the changes in the parameters of the electromagnetic signals and their spectra in porous sandstone samples saturated with water or salt solutions are given. Based on our results, a method is proposed to quantify the salinity of natural water contained in oil or other sources based on changes in the electromagnetic signal parameters when such water comes into contact with rocks.
AB - In this study, mechanical-electrical transformations were excited in heterogeneous solid materials. Electromagnetic signals were excited in rock samples via determined acoustic pulses. The main patterns of changes in the electromagnetic signals' amplitude–frequency parameters at the contacts of the rock samples with distilled and mineralised water were determined. We find that contact with distilled water decreases the electromagnetic signal and spectral component amplitudes, while contact with brine leads expands the spectrum. The laws determining the changes in the parameters of the electromagnetic signals and their spectra in porous sandstone samples saturated with water or salt solutions are given. Based on our results, a method is proposed to quantify the salinity of natural water contained in oil or other sources based on changes in the electromagnetic signal parameters when such water comes into contact with rocks.
KW - Amplitude–frequency spectrum
KW - Distilled water
KW - Electromagnetic signal
KW - Mechanoelectric transformations
KW - Mineralisation
KW - Rock
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U2 - 10.1016/j.jappgeo.2020.104140
DO - 10.1016/j.jappgeo.2020.104140
M3 - Article
AN - SCOPUS:85088629334
VL - 181
JO - Journal of Applied Geophysics
JF - Journal of Applied Geophysics
SN - 0926-9851
M1 - 104140
ER -