The Response Mechanism of Borehole Shear-Horizontal Transverse-Electric Seismoelectric Waves to Fluid Salinity

The converted electric field in the seismoelectric effect can be used to monitor salinity of reservoir. Compared some conventional excitation methods (e.g., Monopole source), response law borehole shear-horizontal transverse-electric (SH-TE) waves fluid is unique. In order explore its physical mechanism, we study influence on SH-TE wave fields this paper. First, analyze field, simulate for different levels inside and outside borehole. Then case a radial discontinuity borehole, interface by secant integral method. Finally, show feasibility using wavefields estimate position combining slowness-time coherence (STC) results that amplitude changes monotonously with pore level. However, has almost no field. This caused method low frequency sound source. An electromagnetic generated when an SH passes through interface. estimation examples potential evaluate behavior location next