Electrokinetic Phenomena in Electrical Insulating Oil/Impregnated Cellulosic Pressboard Systems

Yasufuku, S.; Ise, Tomoko; Inoue, Yuki; Ishioka, Y.

doi:10.1109/tei.1977.298044

Cited by 17 publications

(3 citation statements)

References 4 publications

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“…We are not aware of any work in this direction so far. At low frequencies, it has been observed that electrokinetic phenomena in oil‐wet porous media are similar to those existing in water‐saturated porous materials (Yasufuku et al. 1977; Alkafeef et al.…”

Section: Introductionmentioning

confidence: 84%

Seismoelectric response of heavy oil reservoirs: theory and numerical modelling

Revil

Jardani²

2010

Geophysical Journal International

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International audienceWe consider a linear poroelastic material filled with a linear viscoelastic solvent like wet heavy oils (oil as opposed to water or brines is wetting the surfaces of the pores). We extend the electrokinetic theory in the frequency domain accounting for the relaxation effects associated with resonance of the viscoelastic fluid. The fluid is described by a generalized Maxwell rheology with a distribution of relaxation times given by a Cole–Cole distribution. We use the assumption that the charges of the diffuse layer are uniformly distributed in the pore space (Donnan model). The macroscopic constitutive equations of transport for the seepage velocity and the current density have the form of coupled Darcy and Ohm equations with frequency-dependent material properties. These equations are combined with an extended Frenkel–Biot model describing the deformation of the poroelastic material filled with the viscoelastic fluid. In the mechanical constitutive equations, the effective shear modulus is frequency dependent. An amplification of the seismoelectric conversion is expected in the frequency band where resonance of the generalized Maxwell fluid occurs. The seismic and seismoelectric equations are modelled using a finite element code with PML boundary conditions. We found that the DC-value of the streaming potential coupling coefficient is also very high. These results have applications regarding the development of new non-intrusive methods to characterize shallow heavy oil reservoirs in tar sands and DNAPL contaminant plumes in shallow aquifers

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Section: Introductionmentioning

confidence: 84%

Seismoelectric response of heavy oil reservoirs: theory and numerical modelling

Revil

Jardani²

2010

Geophysical Journal International

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“…There are several experimental studies of the influence of surfactants on dielectric strength [12][13][14]. Denat and colleagues [15] measured current waveforms for cyclohexane with AOT.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of transit conduction current in an insulating liquid with added ionic electrolyte

Nakamura

Ishii

Yamada

2007

Electrical Engineering Japan

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SUMMARYWe simulated the phenomena of transit conduction in an insulating liquid with added ionic molecules such as surfactant, by using the charge-injection model with dissociation-recombination. When the parameters of C i (density of injected charge) and C 0 (density of created charge in the liquid) are C i > C 0 in this simulation, the waveform of current density showed an injection type with a peak, and when C i < C 0 , it showed a dissociation-recombination type. A decreasing characteristic appeared in the low electric field, maximum one in the middle field, and saturating one in the high field.

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“…La courbe b de la figure 1 représente les variations 039B(C) de solutions de picrate de tétrabutylammonium (TBAP) dans le benzène. Il apparaît une différence très nette de comportement de ces solutions, ce qui avait déjà été observé [1,2,6].…”

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Conductivité électrique de solutions de surfactants dans les hydrocarbures

Denat

Gosse

1981

Rev. Phys. Appl. (Paris)

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Electrokinetic Phenomena in Electrical Insulating Oil/Impregnated Cellulosic Pressboard Systems

Cited by 17 publications

References 4 publications

Seismoelectric response of heavy oil reservoirs: theory and numerical modelling

Seismoelectric response of heavy oil reservoirs: theory and numerical modelling

Numerical analysis of transit conduction current in an insulating liquid with added ionic electrolyte

Conductivité électrique de solutions de surfactants dans les hydrocarbures

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