Coupled seismic and electromagnetic wave propagation

Schakel, Menne

doi:10.1190/geo2012-0405-geodis.2

Cited by 3 publications

(9 citation statements)

References 60 publications

(198 reference statements)

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“…As shown in Figure 1, the surface of porous medium grain, which is in contact with pore fluids, gains a chemically bound charge due to deprotonization and ion adsorption between surface and fluid reactions [18]. In a thin layer surrounding the grains, mobile counter ions tend to balance the bound charge.…”

Section: Electrical Double Layermentioning

confidence: 99%

“…Thus, the exact balance of the hydraulic current flow is driven by a conduction current of that electric field. Subsequently, there is not net electric current, because there is no support upon the coseismic field outside the wave [12,13,18]. However, the instant a seismic wave that crosses a boundary with a contrast in mechanical and/or electrical properties, it produces an electromagnetic signal referred to as the "interface response field" as shown in Fig.…”

Section: The Seismoelectric Effects In Fluid-saturated Porous Mediummentioning

confidence: 99%

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Numerical Study of Frequency-dependent Seismoelectric Coupling in Partially-saturated Porous Media

2016

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Abstract. 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 frequencydependent 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.

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Section: Electrical Double Layermentioning

confidence: 99%

Section: The Seismoelectric Effects In Fluid-saturated Porous Mediummentioning

confidence: 99%

Numerical Study of Frequency-dependent Seismoelectric Coupling in Partially-saturated Porous Media

2016

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“…Their well tests indicated clear electroseismic conversion in the formation and were proved useful in diagnosing well properties, including cement integrity and near-well formation. Schakel's [17] designed laboratory experiments to demonstrated electroseismic conversion in the frequency range 50-150 kHz and observed that electroseismic amplitudes as a function of frequency maximize at 70 kHz.…”

mentioning

confidence: 99%

“…We can extend µ and γ to R 3 so that for some nonzero constants µ 0 and γ 0 , µ − µ 0 and γ − γ 0 are compactly supported. We also assume that Z is the solution to (17) (P ∓ (D) − W t µ,γ )Z = Y. Lemma 2.1 then implies that Z solves the matrix Schrödinger equation (18) (…”

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confidence: 99%

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The inverse problem for electroseismic conversion: Stable recovery of the conductivity and the electrokinetic mobility parameter

Hoop¹,

Chen²

2016

IPI

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Pride (1994, Phys. Rev. B 50 15678-96) derived the governing model of electroseismic conversion, in which Maxwell's equations are coupled with Biot's equations through an electrokinetic mobility parameter. The inverse problem of electroseismic conversion was first studied by Chen and Yang (2013, Inverse Problem 29 115006). By following the construction of Complex Geometrical Optics (CGO) solutions to a matrix Schrödinger equation introduced by Ola and Somersalo (1996, SIAM J. Appl. Math. 56 No. 4 1129-1145), we analyze the recovering of conductivity, permittivity and the electrokinetic mobility parameter in Maxwell's equations with internal measurements, while allowing the magnetic permeability µ to be a variable function. We show that knowledge of two internal data sets associated with well-chosen boundary electrical sources uniquely determines these parameters. Moreover, a Lipschitztype stability is obtained based on the same set.

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Inverse problem of electroseismic conversion. I: Inversion of Maxwell's equations with internal data

Chen¹,

Hoop²

2014

Preprint

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Pride (1994, Phys. Rev. B 50 1567896) derived the governing model of electroseismic conversion, in which Maxwell's equations are coupled with Biot's equations through an electrokinetic mobility parameter. The inverse problem of electroseismic conversion was first studied by Chen and Yang (2013, Inverse Problem 29 115006). By following the construction of Complex Geometrical Optics (CGO) solutions to a matrix Schrödinger equation introduced by Ola and Somersalo , SIAM J. Appl. Math. 56 No. 4 1129-1145, we analyze the reconstruction of conductivity, permittivity and the electrokinetic mobility parameter in Maxwell's equations with internal measurements, while allowing the magnetic permeability µ to be a variable function. We show that knowledge of two internal data sets associated with well-chosen boundary electric sources uniquely determines these parameters. Moreover, a Lipschitz-type stability is obtained based on the same set.

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Coupled seismic and electromagnetic wave propagation

Cited by 3 publications

References 60 publications

Numerical Study of Frequency-dependent Seismoelectric Coupling in Partially-saturated Porous Media

Numerical Study of Frequency-dependent Seismoelectric Coupling in Partially-saturated Porous Media

The inverse problem for electroseismic conversion: Stable recovery of the conductivity and the electrokinetic mobility parameter

Inverse problem of electroseismic conversion. I: Inversion of Maxwell's equations with internal data

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