Abstract
The seismoelectric effects of the first and second kinds of oil and gas reservoir rocks are studied in three geological regions. Rock samples were taken from deep borehole cores of terrigenous and carbonate composition. Measurements were made in the ultrasound range (100–200 kHz) and at a frequency of 300 Hz. It is shown that the relationship between the porosity coefficient and the intensity of the second-kind seismoelectric effect is the same for terrigenous reservoir rocks in the Saratov Zavolzh’e region, an area of Western Siberia, and the Dnieper-Donets basin. An anomalously strong seismoelectric effect of the first kind (a vibration-induced change in the electrical resistance) is discovered for carbonate reservoir rocks of the Zavolzh’e region.
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