Measurement of the electrokinetic potential at reservoir rock surfaces avoiding the effect of surface conductivity

Alkafeef, Saad F.; Gochin, R.J.; Smith, Adam

doi:10.1016/s0927-7757(99)00263-0

Cited by 33 publications

(35 citation statements)

References 8 publications

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“…The Berea sandstone contains also a minor fraction of ankerite, a carbonate mineral that influences the pH of the pore water. We estimate that the pH is likely to be in the range 7-9 for the experiments made by Alkafeef et al [24]. The precise value is, however, not reported by the authors.…”

Section: Kaolinitementioning

confidence: 59%

“…We use the recent experimental data from Alkafeef et al [24]. These authors used a Berea sandstone in which the electrokinetic behavior response is influenced by kaolinite particles due to their key locations in the connected porosity.…”

Section: Kaolinitementioning

confidence: 99%

“…(a) Laboratory data. Specific surface conductivity data from Lorenz [24] (Na kaolinite, 2 × 10 −3 M L −1 NaCl, pH range 3-11); Na + surface concentrations from Poirier and Cases [1, Figure 2] (natural kaolinite, 5 × 10 −2 M L −1 NaCl, pH range investigated 2.0-8.2). (b) Prediction of our model.…”

Section: Implication For Surface Conductivitymentioning

confidence: 99%

“…The values of the optimized parameters are given on the graph (minimum of the cost function R = 4.2 mV at pH 9). Experimental data are from Alkafeef et al[24] (KCl, 25 • C).…”

mentioning

confidence: 99%

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A triple-layer model of the surface electrochemical properties of clay minerals

Leroy

Revil

2004

Journal of Colloid and Interface Science

277

263

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Section: Kaolinitementioning

confidence: 59%

Section: Kaolinitementioning

confidence: 99%

Section: Implication For Surface Conductivitymentioning

confidence: 99%

“…The values of the optimized parameters are given on the graph (minimum of the cost function R = 4.2 mV at pH 9). Experimental data are from Alkafeef et al[24] (KCl, 25 • C).…”

mentioning

confidence: 99%

See 2 more Smart Citations

A triple-layer model of the surface electrochemical properties of clay minerals

Leroy

Revil

2004

Journal of Colloid and Interface Science

277

263

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“…Equation (1) is still the basis for the determination of the zeta potentials of various materials by numerous researchers, even if it is known that this equation tends to underestimate the magnitude of the zeta potential [3][4][5][6][7]. When other effects (such as the surface conductivity of the grains or the influence of nonviscous flow) need to be taken into account, the zeta potential determined from the HS equation can only be called an "apparent zeta potential."…”

Section: Introductionmentioning

confidence: 99%

Influence of the Dukhin and Reynolds numbers on the apparent zeta potential of granular porous media

Crespy

Bolève²,

Revil

2007

Journal of Colloid and Interface Science

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Charging behaviour at the carbonate rock‐water interface in low‐salinity waterflooding: Estimation of zeta potential in high‐salinity brines

et al. 2021

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The study of zeta potential using electro‐kinetic analyzers that measure streaming potential has limitations of measurements to relatively low ionic strength solutions (<0.1 mol/L) due to the threshold limit of streaming potential signal above a certain limit of ionic strength. The objective of this study is to indirectly estimate the zeta potential for higher salinity brine using the zeta potential measurements for low salinity brine, develop an understanding of electrostatic shielding as predicted by the electric double layer (EDL) model, and overcome the limitation of the apparatus. Zeta potential become less negative as ionic strength increases, as per the Gouy–Chapman–Stern theory. It explains the suppression of electro‐kinetic phenomena due to the gradual compression of the diffuse layer. Our calculations show that the zeta potential and the Debye length become nearly constant at higher ionic strength. The ability to estimate zeta potential by the Gouy‐Chapman‐Stern theory at increasing ionic strength is limited. This theory predicts that the concentration of counter‐ions in the Stern layer increases with increasing ionic strength of the brine until the surface charge becomes neutralized and the diffuse layer collapses. However, it ignores the spatial extension of ions. It considers them as a point charge and may not accurately predict the zeta potential at higher ionic strength. The extent of diffuse layer compression is thus limited to the size of the hydrated counter‐ion. It is very unlikely that the measured zeta potential will become zero at higher ionic strength of brines and our calculations show the same.

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Measurement of the electrokinetic potential at reservoir rock surfaces avoiding the effect of surface conductivity

Cited by 33 publications

References 8 publications

A triple-layer model of the surface electrochemical properties of clay minerals

A triple-layer model of the surface electrochemical properties of clay minerals

Influence of the Dukhin and Reynolds numbers on the apparent zeta potential of granular porous media

Charging behaviour at the carbonate rock‐water interface in low‐salinity waterflooding: Estimation of zeta potential in high‐salinity brines

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