For porous medium containing multiphase fluid, such as oil-wetted with oil–water dual phase its fluid interface will also produce electric double layer (EDL), which play a role in the seismoelectric effects. At this time, principle of effects is more complex. The existing theory for Pride used water-saturated formation, cannot meet actual needs theoretical research exploration formation fluid. ...

The piezoelectric and seismo-electrokinetic phenomena are manifested by electrical and electromagnetic processes that occur in rocks under the influence of elastic oscillations triggered by shots or mechanical impacts. Differences in piezoelectric properties between the studied targets and host media determine the possibilities of the piezoelectric/seismoelectric method application. Over a long...

The seismoelectric logging method is based on measuring the electric field generated by seismic waves in a fluid-filled borehole. Two kinds of electromagnetic (EM) fields can be generated within the formation and at the interface of formations. One is a stationary or local EM wave and the other is a radiating EM wave. In this paper, we make various fractured borehole models with artificial mate...

S U M M A R Y We propose a new, simple and efficient method to image electrical resistivity between a set of wells. Our procedure consists of two steps: first, we map the interfaces between various subsurface formations using seismoelectric conversions; second, we derive the formation resistivity using image-guided cross-well electric tomography. In the first step, we focus seismic energy at a ...

I have developed experimental methods in seismoelectrics in order to image targets in the shallow subsurface, motivated by theoretical predictions that the seismoelectric method (recording seismic-to-electric conversions) can provide useful, and otherwise unattainable, information about thin layers and permeability and chemical property contrasts. I approach this problem with a combination of f...

In this paper, a method is proposed to invert permeability from seismoelectric logs in fluid-saturated porous formations. From the analysis of both the amplitude and the phase of simulated seismoelectric logs, we find that the Stoneley wave amplitude of the ratio of the converted electric field to the pressure (REP) is sensitive to porosity rather than permeability while the tangent of the REP’...

The interpretation of seismoelectric observations involves the dynamic electrokinetic coupling , which is related to the streaming potential coefficient. We describe the different models of the frequency-dependent streaming potential, mainly the Packard's and the Pride's model. We compare the transition frequency separating low-frequency viscous flow and high-frequency inertial flow, for dynami...

SUMMARY Seismoelectric signals are generated by electrokinetic coupling from seismic wave propagation in fluid-filled porous media. This process is directly related to the existence of an electrical double layer at interface between pore fluid and minerals composing walls. The seismoelectric method attracts interest researchers different areas, oil gas reservoir characterization hydrogeophysics...

A theory of cross-coupled flow equations in unsaturated soils is necessary to predict (1) electroosmotic flow with application to electroremediation and agriculture, (2) the electroseismic and the seismoelectric effects to develop new geophysical methods to characterize the vadose zone, and (3) the streaming current, which can be used to investigate remotely ground water flow in unsaturated con...