Analysis of electroosmotic characters in fractal porous media

Liang, Mingchao; Yang, Shanshan; Miao, Tongjun; Yu, Bo

doi:10.1016/j.ces.2015.01.030

Cited by 33 publications

(18 citation statements)

References 53 publications

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“…As stated by Yu and Cheng (2002) and Liang et al (2014Liang et al ( , 2015, equation (10) holds approximately when r min /r max ≈ 10 −2 or < 10 −2 in porous media. The fractal dimension for pore space (D f ) is expressed as follows:…”

Section: F R a C T A L T H E O R Y F O R P O R O U S M E D I Amentioning

confidence: 88%

“…The fractal expressions are presented for predicting imbibition rate and permeability of porous media (Cai et al 2012a, b). Liang et al (2015) also proposed a fractal model for the height difference caused by the electroosmotic flow in porous media. Liang et al (2015) also proposed a fractal model for the height difference caused by the electroosmotic flow in porous media.…”

mentioning

confidence: 99%

“…Liang et al (2014) introduced a fractal streaming current model for charged microscale porous media. Liang et al (2015) also proposed a fractal model for the height difference caused by the electroosmotic flow in porous media. However, fractal geometry theory has not yet been applied to analyse the streaming potential in porous media.…”

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confidence: 99%

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A fractal model for streaming potential coefficient in porous media

Thanh

Độ

Nghĩa

et al. 2017

Geophysical Prospecting

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Streaming potential is the result of coupling between a fluid flow and an electric current in porous rocks. The modified Helmholtz–Smoluchowski equation derived for capillary tubes is mostly used to determine the streaming potential coefficient of porous media. However, to the best of our knowledge, the fractal geometry theory is not yet applied to analyse the streaming potential in porous media. In this article, a fractal model for the streaming potential coefficient in porous media is developed based on the fractal theory of porous media and on the streaming potential in a capillary. The proposed model is expressed in terms of the zeta potential at the solid−liquid interface, the minimum and maximum pore/capillary radii, the fractal dimension, and the porosity of porous media. The model is also examined by using another capillary size distribution available in published articles. The results obtained from the model using two different capillary size distributions are in good agreement with each other. The model predictions are then compared with experimental data in the literature and those based on the modified Helmholtz–Smoluchowski equation. It is shown that the predictions from the proposed fractal model are in good agreement with experimental data. In addition, the proposed model is able to reproduce the same result as the Helmholtz–Smoluchowski equation, particularly for high fluid conductivity or large grain diameters. Other factors influencing the streaming potential coefficient in porous media are also analysed.

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Section: F R a C T A L T H E O R Y F O R P O R O U S M E D I Amentioning

confidence: 88%

mentioning

confidence: 99%

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A fractal model for streaming potential coefficient in porous media

Thanh

Độ

Nghĩa

et al. 2017

Geophysical Prospecting

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“…Future works also should be focused on the influence of fracture surface roughness, hydraulic gradient, the coupled thermo-hydro-mechanical-chemical processes (Berkowitz, 2002;Liang et al, 2015;Yasuhara et al, 2016), precipitation-dissolution and biogeochemistry (MacQuarrie and Mayer, 2005), and so on, on the evolution of fracture network permeability.…”

Section: Discussion and Future Workmentioning

confidence: 99%

Geometrical, fractal and hydraulic properties of fractured reservoirs: A mini-review

Wei

Xia

2017

Adv. Geo-Energ. Res.

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Fractures and fracture networks play an important role in fluid flow and transport properties of oil and gas reservoirs. Accurate estimation of geometrical characteristics of fracture networks and their hydraulic properties are two key research directions in the fields of fluids flow in fractured porous media. Recent works focusing on the geometrical, fractal and hydraulic properties of fractured reservoirs are reviewed and summarized in this mini-review. The effects of several important parameters that significantly influences hydraulic properties are specifically discussed and analyzed, including fracture length distribution, aperture distribution, boundary stress and anisotropy. The methods for predicting fractal dimension of fractures and models for fracture networks and fractured porous media based on fractal-based approaches are addressed. Some comments and suggestions are also given on the future research directions and fractal fracture networks as well as fractured porous media.

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“…flow of power-law fluids through a rectangular microchannel with electroviscous effects. These results indicate that the EDL effect can be an important factor to assess the pressure driven flow in porous media [18][19][20]. Nowadays, the electrokinetic phenomena in porous media have widely been applied to the micropump, chemical engineering, medical science and other fields [21,22].…”

Section: Introductionmentioning

confidence: 98%