In the context of seismoelectric and self-potential surveying, effective excess charge density electrokinetic coupling coefficient are key parameters relating measured electrical potential hydraulic characteristics explored porous media. this work, we present a novel flux averaging approach that permits to estimate frequency-dependent in partially saturated For this, conceptualize medium as bun...

When a rock sample is pressed by a force, the pressure on the crystal lattice generates an electrical field around the quart grains due to the piezoelectric effect. If a rock is saturated by conductive fluid, the relative motion between the pore fluid and the matrix solid generates an electromagnetic field due to seismoelectric conversion, and the permeating of fluid into new microcracks made b...

The study of the numerical simulation seismoelectric effects is very helpful for understanding theory and mechanism activities. Quasi-static approximation widely used in fields. However, errors occur when model domain not within near-field area EM waves or medium high salinity. To solve this problem, we propose a time-domain finite-element algorithm (FETD) based on full-wave electromagnetic (EM...

The seismoelectric effect is the fundamental basis for logging. Most of existing theories are based on Pride theory, which adopts assumption a thin electric double layer and uses volume-averaging method to derive coupling equations; hence, obtained electrokinetic coefficient not applicable large-Debye-length cases. In addition, theory neglects change in seepage velocity with radial position por...