Frequency-Dependent Streaming Potential of Porous Media—Part 1: Experimental Approaches and Apparatus Design

Glover, Paul; Ruel, Jean; Tardif, E.; Walker, E.

doi:10.1155/2012/846204

Cited by 9 publications

(21 citation statements)

References 19 publications

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“…The steady-state streaming potential is independent of the sample geometry. The importance of considering the surface conductance when applying the HS equation to geological materials has been discussed by a number of authors including [1,[14][15][16][17]. Recently several modified versions of the classical HS equation have been published that take into account the variability of the streaming potential coupling coefficient as a function of grain size [17,[19][20][21], pore size [17], and pore throat size [17].…”

Section: Theoretical Modelsmentioning

confidence: 99%

“…Experimental tests were carried out on samples of Ottawa sand and on packs of glass beads using the apparatus described in the as-sociated paper [1]. Their main properties are shown in Table 1.…”

Section: Sample Materials and Basic Characteristicsmentioning

confidence: 99%

“…One of the characteristics of an electromagnetic shaker is that the piston amplitude decreases with frequency for any set driving current [1]. However, the differential fluid pressure generated by the piston increases with frequency [1].…”

Section: Displacement Testsmentioning

confidence: 99%

“…A review of the existing measurements was carried out by Glover et al [1]. These previous measurements can be divided into two groups: (i) transient measurements with a percussive source and (ii) harmonic measurements with a vibrating source.…”

Section: Introductionmentioning

confidence: 99%

“…This paper reports research that uses the electromagnetic drive concept proposed by Glover et al [1] to create an apparatus for measuring the frequency-dependent streaming potential coupling coefficient of unconsolidated materials such as sands, gravels, and soils. Unconsolidated materials were chosen because it is easier to arrange a sample holder 2 International Journal of Geophysics with no need for a sleeve and a sleeve pressure.…”

Section: Introductionmentioning

confidence: 99%

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Frequency-Dependent Streaming Potential of Porous Media—Part 2: Experimental Measurement of Unconsolidated Materials

Glover

Walker

Ruel

et al. 2012

International Journal of Geophysics

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Frequency-dependent streaming potential coefficient measurements have been made upon Ottawa sand and glass bead packs using a new apparatus that is based on an electromagnetic drive. The apparatus operates in the range 1 Hz to 1 kHz with samples of 25.4 mm diameter up to 150 mm long. The results have been analysed using theoretical models that are either (i) based upon vibrational mechanics, (ii) treat the geological material as a bundle of capillary tubes, or (iii) treat the material as a porous medium. The best fit was provided by the Pride model and its simplification, which is satisfying as this model was conceived for porous media rather than capillary tube bundles. Values for the transition frequency were derived from each of the models for each sample and were found to be in good agreement with those expected from the independently measured effective pore radius of each material. The fit to the Pride model for all four samples was also found to be consistent with the independently measured steady-state permeability, while the value of the streaming potential coefficient in the low-frequency limit was found to be in good agreement with other steady-state streaming potential coefficient data.

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Section: Theoretical Modelsmentioning

confidence: 99%

Section: Sample Materials and Basic Characteristicsmentioning

confidence: 99%

Section: Displacement Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Frequency-Dependent Streaming Potential of Porous Media—Part 2: Experimental Measurement of Unconsolidated Materials

Glover

Walker

Ruel

et al. 2012

International Journal of Geophysics

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A transient method for measuring the DC streaming potential coefficient of porous and fractured rocks

Walker

Glover

Ruel

2014

J. Geophys. Res. Solid Earth

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High-quality streaming potential coupling coefficient measurements have been carried out using a newly designed cell with both a steady state methodology and a new pressure transient approach. The pressure transient approach has shown itself to be particularly good at providing high-quality streaming potential coefficient measurements as each transient increase or decrease allows thousands of measurements to be made at different pressures to which a good linear regression can be fitted. Nevertheless, the transient method can be up to 5 times as fast as the conventional measurement approaches because data from all flow rates are taken in the same transient measurement rather than separately. Test measurements have been made on samples of Berea and Boise sandstone as a function of salinity (approximately 18 salinities between 10 À5 mol/dm 3 and 2 mol/dm 3 ). The data have also been inverted to obtain the zeta potential. The streaming potential coefficient becomes greater (more negative) for fluids with lower salinities, which is consistent with existing measurements. Our measurements are also consistent with the high-salinity streaming potential coefficient measurements made by Vinogradov et al. (2010). Both the streaming potential coefficient and the zeta potential have also been modeled using the theoretical approach of . This modeling allows the microstructural, electrochemical, and fluid properties of the saturated rock to be taken into account in order to provide a relationship that is unique to each particular rock sample. In all cases, we found that the experimental data were a good match to the theoretical model.

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Experimental Measurement of Frequency-Dependent Permeability and Streaming Potential of Sandstones

et al. 2019

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Hydraulic flow, electrical flow and the passage of elastic waves through porous media are all linked by electrokinetic processes. In its simplest form, the passage of elastic waves through the porous medium causes fluid to flow through that medium and that flow gives rise to an electrical streaming potential and electrical counter-current. These processes are frequency-dependent and governed by coupling coefficients which are themselves frequency-dependent. The link between fluid pressure and fluid flow is described by dynamic permeability, which is characterised by the hydraulic coupling coefficient (C hp). The link between fluid pressure and electrical streaming potential is characterised by the streaming potential coefficient (C sp). While the steady-state values of such coefficients are well studied and understood, their frequency dependence is not. Previous work has been confined to unconsolidated and disaggregated materials such as sands, gravels and soils. In this work, we present an apparatus for measuring the hydraulic and streaming potential coefficients of high porosity, high permeability consolidated porous media as a function of frequency. The apparatus operates in the range 1 Hz to 2 kHz with a sample of 10 mm diameter and 5-30 mm in length. The full design and validation of the apparatus are described together with the experimental protocol it uses. Initial data are presented for three samples of Boise sandstone, which present as dispersive media with the critical transition frequency of 918.3 ± 99.4 Hz. The in-phase and in-quadrature components of the measured hydraulic and streaming potential coefficients have been compared to the Debye-type dispersion model as well as theoretical models based on bundles of capillary tubes and porous media. Initial results indicate that the dynamic permeability data present an extremely good fit to the capillary bundle and Debye-type dispersion models, while the streaming potential coefficient presents an extremely good fit to all of the models up to the critical transition frequency, but diverges at higher frequencies. The streaming potential coefficient data are best fitted by the Pride model and its Walker and Glover simplification. Characteristic pore size values calculated from the measured critical transition frequency fell within 1.73% of independent measures of this parameter, while the values calculated directly from the Packard model showed an underestimation by about 12%.

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Frequency-Dependent Streaming Potential of Porous Media—Part 1: Experimental Approaches and Apparatus Design

Cited by 9 publications

References 19 publications

Frequency-Dependent Streaming Potential of Porous Media—Part 2: Experimental Measurement of Unconsolidated Materials

Frequency-Dependent Streaming Potential of Porous Media—Part 2: Experimental Measurement of Unconsolidated Materials

A transient method for measuring the DC streaming potential coefficient of porous and fractured rocks

Experimental Measurement of Frequency-Dependent Permeability and Streaming Potential of Sandstones

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