Theoretical study on the amplitude ratio of the seismoelectric field to the Stoneley wave and the formation tortuosity estimation from seismoelectric logs

Guan, Wei; Yin, Chenggang; Wang, Jun; Cui, Naigang; Hu, Hengshan; Wang, Zhi

doi:10.1093/gji/ggv424

Cited by 12 publications

(6 citation statements)

References 28 publications

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“…The China University of Petroleum developed a new generation of seismoelectric logging detectors, which are currently undergoing laboratory and field tests [24][25][26]. Guan et al proposed a method to invert permeability from seismoelectric logs in fluid-saturated porous formations, which has a guiding effect on actual data processing [27,28].…”

Section: Introductionmentioning

confidence: 99%

Design of a New Seismoelectric Logging Instrument

Zhang

Lü

et al. 2021

Sensors

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To increase the accuracy of reservoir evaluation, a new type of seismoelectric logging instrument was designed. The designed tool comprises the invented sonde-structured array complex. The tool includes several modules, including a signal excitation module, data acquisition module, phased array transmitting module, impedance matching module and a main system control circuit, which are interconnected through high-speed tool bus to form a distributed architecture. UC/OS-II was used for the real-time system control. After constructing the experimental measurement system prototype of the seismoelectric logging detector, its performance was verified in the laboratory. The obtained results showed that the consistency between the multi-channel received waveform amplitude and benchmark spectrum was more than 97%. The binary phased linear array transmitting module of the instrument can realize 0° to 20° deflection and directional radiation. In the end, a field test was conducted to verify the tool’s performance in downhole conditions. The results of this test proved the effectiveness of the developed seismoelectric logging tool.

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Section: Introductionmentioning

confidence: 99%

Design of a New Seismoelectric Logging Instrument

Zhang

Lü

et al. 2021

Sensors

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“…Wang et al (2012) conducted a comprehensive component wave analysis of the seismoelectric logging excited by a monopole acoustic source, focusing on the dispersion characteristics of each kind of wave. Guan et al (2013Guan et al ( , 2015 proposed the inversion formulas for formation permeability and tortuosity based on the seismoelectric effect logging. Wang and Cui (2019) applied the secant integral method to the seismoelectric effect logging problem of the formation with discontinuous elastic properties.…”

Section: Introductionmentioning

confidence: 99%

“…Guan et al . (2013, 2015) proposed the inversion formulas for formation permeability and tortuosity based on the seismoelectric effect logging. Wang and Cui (2019) applied the secant integral method to the seismoelectric effect logging problem of the formation with discontinuous elastic properties.…”

Section: Introductionmentioning

confidence: 99%

Dependence of borehole shear‐horizontal‐wave seismoelectric response on soil textures

Wang

Cui

Liu

et al. 2020

Geophysical Prospecting

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The phenomenon of acoustic waves inducing electric fields in porous media is called the seismoelectric effect. Earlier investigators proposed the usage of seismoelectric effect for well logging. Soil texture has a strong influence on the coupled wave fields during shallow surface explorations. In this article, we study the borehole pure shearhorizontal wave and the coupling transverse-electric field (acoustic-electrical coupling wave fields) in the partially saturated soil. Combined with related theories, we expand the formation parameters to partially saturated forms and discuss the influence of soil texture conditions on the seismoelectric wave fields. The results show that the elastic and electrical properties of porous media are sensitive to water saturation. The compositions of the acoustic and electric fields for different soil textures do not change, but the waveforms differ. We also use the secant integral method to simulate the interfaceconverted electromagnetic waves. The results show that interface response strength is greatly influenced by soil texture. In addition, considering the sensitivity of the inducing electric field to fluid salinity, we also simulate the time-domain waveforms of electric field for different pore fluid salinity levels. The results show that as the salinity increases, the electric field amplitude decreases monotonically. The above conclusions have certain significance for the application of borehole shear wave and its coupled electric fields for resource exploration, saturation assessment and groundwater pollution monitoring.

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“…These electrokinetic phenomena have various applications in geophysical exploration [e.g. Hu et al, 2000Hu et al, , 2002Dupuis et al, 2009;Sava and Revil, 2012;Guan et al, 2013Guan et al, , 2015Monetti et al, 2014;Zyserman et al, 2015], hydrogeophysics [e.g. Warden et al, 2013;Kröger et al, 2014;Ozaki et al, 2014;Rangarajan et al, 2014;Desroches and Butler, 2016] and earthquake warning [e.g.…”

Section: Introductionmentioning

confidence: 99%

Dependence of Dynamic Electrokinetic-Coupling-Coefficient on the Electric Double Layer Thickness of fluid-filled porous formations

Shi

Guan

2018

Annals of Geophysics

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Electrokinetic coupling between pore-fluid flow and electric field arising from the electrical double layer (EDL) has many applications in geoscience. In this study, we extended the formulas for the dynamic electrokinetic coupling coefficient (ECC) to arbitrary scaled capillaries. These two ECC formulas for the cylindrical and slit apertures, respectively, were derived without the thin or thick EDL assumption used in previous studies, relating to the normalized radius (the ratio of capillary radius to Debye length). By the identical ECC formulas for streaming current and electroosmosis effects, it is confirmed that Onsager's reciprocity is generally satisfied for arbitrary scaled and shaped apertures. This ECC tends to the results using the thick and the thin EDL assumptions respectively with the decrease and increase of the normalized radius. It is shown that the relative error is less than 10.0% if the normalized radius is less than 0.8 and is larger than 20, respectively. Otherwise, the thick and the thin EDL assumptions are inapplicable. The high-frequency limit phase of this ECC increases from 45° to 90° with the decrease of the normalized radius, rather than that remains at 45° under the thin EDL assumption. The linear approximation for solving the Poisson-Boltzmann equation influences the electric potential in the EDL and the ECC, which increases with the decrease of the normalized radius. If the normalized radius is larger than 7, the error is within 5.0% even though the linear approximation has been mathematically invalid when the salinity is 0.001 mol/L and zeta potential is -150 mV.

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Theoretical study on the amplitude ratio of the seismoelectric field to the Stoneley wave and the formation tortuosity estimation from seismoelectric logs

Cited by 12 publications

References 28 publications

Design of a New Seismoelectric Logging Instrument

Design of a New Seismoelectric Logging Instrument

Dependence of borehole shear‐horizontal‐wave seismoelectric response on soil textures

Dependence of Dynamic Electrokinetic-Coupling-Coefficient on the Electric Double Layer Thickness of fluid-filled porous formations

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