The temperature dependence of the zeta potential in porous media

Thanh, Luong Duy

doi:10.25073/2588-1124/vnumap.4090

Cited by 2 publications

(4 citation statements)

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“…Pressure differences across a sample are measured by a highprecision differential pressure transducer (Endress and Hauser Deltabar S PMD75). The way used to collect the SPC is already described in [23] and reference therein. Streaming potential across the sample (ΔV) is measured as a function of applied pressure difference (ΔP).…”

Section: Streaming Potential Measurementmentioning

confidence: 99%

“…Similarly, the permeability of other samples is obtained and reported in Table 1 with an error of 10 %. Method of determining the formation factor and tortuosity is introduced in [19] and reference therein. The formation factor F is defined as:…”

Section: Porosity Permeability and Formation Factor Measurementsmentioning

confidence: 99%

“…This value is in good agreement with [20] for a random packing of spherical particles. Permeability is determined by a constant flow-rate experiment (see [19] and reference therein for more details). A high pressure pump (LabHut, Series III-Pump) ensures a constant flow through the sample, a high precision differential pressure transducer (Endress and Hauser Deltabar S PMD75) is used to measure the pressure drop.…”

Section: Porosity Permeability and Formation Factor Measurementsmentioning

confidence: 99%

“…The porosity is measured by a simple method mentioned in [19] and reference therein. The sample is first dried in oven for 24 hours, then cooled to room temperature, and finally fully saturated with deionized water under vacuum.…”

Section: Porosity Permeability and Formation Factor Measurementsmentioning

confidence: 99%

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Streaming Potential in Unconsolidated Samples Saturated with Monovalent Electrolytes

Thanh¹

2018

MaP

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Abstract:The streaming potential coefficient of liquid-rock systems is theoretically a very complicated function depending on many parameters including temperature, fluid concentration, fluid pH, as well as rock parameters such as porosity, grain size, pore size, and formation factor etc. At a given porous media, the most influencing parameter is the fluid conductivity or electrolyte concentration. Therefore, it is useful to have an empirical relation between the streaming potential coefficient and electrolyte concentration. In this work, the measurements of the streaming potential for four unconsolidated samples (sandpacks) saturated with four monovalent electrolytes at six different electrolyte concentrations have been performed. From the measured streaming potential coefficient, the empirical expression between the streaming potential coefficient and electrolyte concentration is obtained. The obtained expression is in good agreement with those available in literature. Additionally, it is seen that the streaming potential coefficient depends on types of cation in electrolytes and on samples. The dependence of the streaming potential coefficient on types of cation is qualitatively explained by the difference in the binding constant for cation adsorption on the silica surfaces. The dependence of the streaming potential coefficient on samples is due to the variation of effective conductivity and the zeta potential between samples.

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Section: Streaming Potential Measurementmentioning

confidence: 99%

Section: Porosity Permeability and Formation Factor Measurementsmentioning

confidence: 99%

Section: Porosity Permeability and Formation Factor Measurementsmentioning

confidence: 99%

Section: Porosity Permeability and Formation Factor Measurementsmentioning

confidence: 99%

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