%0 Conference Paper
%A Djuraev, U.
%A Jufar, S.R.
%A Vasant, P.
%D 2016
%F scholars:6538
%I EDP Sciences
%K Electromagnetic waves; Seismic waves; Seismology, Constant frequency; Coupling coefficient; Different frequency; Fluid saturated porous media; Fluid-saturation changes; Frequency dependent; Partially saturated porous media; Seismoelectric phenomena, Porous materials
%R 10.1051/matecconf/20178702001
%T Numerical Study of Frequency-dependent Seismoelectric Coupling in Partially-saturated Porous Media
%U https://khub.utp.edu.my/scholars/6538/
%V 87
%X The seismoelectric phenomenon associated with propagation of seismic waves in fluid-saturated porous media has been studied for many decades. The method has a great potential to monitor subsurface fluid saturation changes associated with production of hydrocarbons. Frequency of the seismic source has a significant impact on measurement of the seismoelectric effects. In this paper, the effects of seismic wave frequency and water saturation on the seismoelectric response of a partially-saturated porous media is studied numerically. The conversion of seismic wave to electromagnetic wave was modelled by extending the theoretically developed seismoelectric coupling coefficient equation. We assumed constant values of pore radius and zeta-potential of 80 micrometers and 48 microvolts, respectively. Our calculations of the coupling coefficient were conducted at various water saturation values in the frequency range of 10 kHz to 150 kHz. The results show that the seismoelectric coupling is frequency-dependent and decreases exponentially when frequency increases. Similar trend is seen when water saturation is varied at different frequencies. However, when water saturation is less than about 0.6, the effect of frequency is significant. On the other hand, when the water saturation is greater than 0.6, the coupling coefficient shows monotonous trend when water saturation is increased at constant frequency. © The Authors, published by EDP Sciences, 2017.
%Z cited By 5; Conference of 9th International Unimas Stem Engineering Conference, ENCON 2016 ; Conference Date: 26 October 2016 Through 28 October 2016; Conference Code:125677