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The laboratory modelling of effects of electric and acoustic fields interaction in porous media saturated with water of hydrocarbons

Sobotka J.

Acta Geophysica Polonica

2004

Vol. 52, nr 3

381-396

The results of experimental studies of electric resistivity of free electrolytes, oils, and models of saturated rocks in an ultrasonic field are presented. It is shown that the resistivity of electrolytes varies rather insignificantly compar-ing to that of oil subject to elastic energy. A theoretical model to explain the obtained experimental results is proposed. The formulae derived offer a possibility to calculate changes of electric resistivity of oil in a wide spectrum of ultrasonic vibration intensities, and to make quantitative evaluation of the mechanoelectric effect, very useful in laboratory and borehole investigations of properties of rocks saturated with hydrocarbons or water. The obtained results suggest possibilities of inventing new methods in geophysical prospecting.