Electrokinetic Techniques for the Determination of Hydraulic Conductivity

Jouniaux, Laurence

doi:10.5772/17599

Cited by 8 publications

(7 citation statements)

References 109 publications

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“…According to [26,27], an average value of zeta potential is about −17 mV for sands or sandstones so that the value of −13.7 mV from our measurements is within the range expected. Therefore, our approach can be effectively used to characterize porous media by using simple measurements, in particular, for very smallpore porous media that are relevant for application in the oil and gas industry.…”

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confidence: 62%

Streaming Potential and Electro-osmosis Measurements to Characterize Porous Materials

Luong¹,

Sprik²

2013

London 2013, 75th Eage Conference en Exhibition Incorporating SPE Europec

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Characterizing the streaming potential and electroosmosis properties of porous media is essential in applying seismoelectric and electroseismic phenomena for oil exploration. Some parameters such as porosity, permeability, formation factor, pore size, the number of pores, and the zeta potential of the samples can be obtained from elementary measurements. We performed streaming potential and electro-osmosis measurements for 6 unconsolidated samples made of spherical polymer particles. To check the validity of the measurements, we also used alternative analysis to determine the average pore size of the samples and, moreover, used a sample made of sand particles to determine the zeta potential.

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confidence: 62%

Streaming Potential and Electro-osmosis Measurements to Characterize Porous Materials

Luong¹,

Sprik²

2013

London 2013, 75th Eage Conference en Exhibition Incorporating SPE Europec

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“…Self‐potential observations have been proposed as an approach to estimate hydraulic diffusivity (Maineult et al . ) and permeability (Jouniaux, ). These observations are interpreted regarding the electrokinetic coupling, which also leads to seismoelectric conversion effects (Gao and Hu, ; Zyserman, Gauzellino, and Santos, ; Strahser et al .…”

Section: Introductionmentioning

confidence: 99%

“…Electrokinetics has been used to detect contaminant leachates (Canton et al 2010) and to detect electrical disturbances induced by magmatic intrusions (Onizawa et al 2009;Mauri, Williams-Jones, and Saracco, 2010). Selfpotential observations have been proposed as an approach to estimate hydraulic diffusivity (Maineult et al 2008) and permeability (Jouniaux, 2011). These observations are interpreted regarding the electrokinetic coupling, which also leads to seismoelectric conversion effects (Gao and Hu, 2010;Zyserman, Gauzellino, and Santos, 2010;Strahser et al 2011;Warden et al 2013;Zhu and Toksöz, 2013;Kröger, Yaramanci, and Kemna, 2014).…”

Section: Introductionmentioning

confidence: 99%

Influence of water pressure dynamics and fluid flow on the streaming‐potential response for unsaturated conditions

Allègre

Jouniaux

Lehmann

et al. 2015

Geophysical Prospecting

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International audienceA B S T R A C T Streaming-potentials are produced by electrokinetic effects in relation to fluid flow and are used for geophysical prospecting. The aim of this study is to model streaming potential measurements for unsaturated conditions using an empirical approach. A conceptual model is applied to streaming potential measurements obtained from two drainage experiments in sand. The streaming potential data presented here show a non-monotonous behaviour with increasing water saturation, following a pattern that cannot be predicted by existing models. A model involving quasi-static and dynamic components is proposed to reproduce the streaming potential measurements. The dynamic component is based on the first time derivative of the driving pore pressure. The influence of this component is investigated with respect to fluid velocity, which is very different between the two experiments. The results demonstrate that the dynamic component is predominant at the onset of drainage in experiments with the slowest water flow. On the other hand, its influence appears to vanish with increasing drainage velocity. Our results suggest that fluid flow and water distribution at the pore scale have an important influence on the streaming potential response for unsat-urated conditions. We propose to explain this specific streaming potential response in terms of the behaviour of both rock/water interface and water/air interfaces created during desaturation processes. The water/air interfaces are negatively charged, as also observed in the case of water/rock interfaces. Both the surface area and the flow velocity across these interfaces are thought to contribute to the non-monotonous behaviour of the streaming potential coefficient as well as the variations in its amplitude. The non-monotonous behaviour of air/water interfaces created during the flow was highlighted as it was measured and modelled by studies published in the literature. The streaming potential coefficient can increase to about 10 to 40 when water saturation decreases. Such an increase is possible if the amount of water/air interfaces is increased in sufficient amount, which can be the case

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“…Though SP is mostly associated with near surface hydrogeological or hydrochemical variations, Jouniaux (2011) reports its possible link to deeper injected groundwater flow in a fault zone at about 1600 m depth. It has been used for assessing the regional groundwater flow characteristics (Satou et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

The self potential method

2015

Groundwater Geophysics in Hard Rock

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Electrokinetic Techniques for the Determination of Hydraulic Conductivity

Cited by 8 publications

References 109 publications

Streaming Potential and Electro-osmosis Measurements to Characterize Porous Materials

Streaming Potential and Electro-osmosis Measurements to Characterize Porous Materials

Influence of water pressure dynamics and fluid flow on the streaming‐potential response for unsaturated conditions

The self potential method

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