Fan, D;
Ettehadtavakkol, A;
Wang, W;
(2020)
Apparent Liquid Permeability in Mixed-Wet Shale Permeable Media.
Transport in Porous Media
, 134
(3)
pp. 651-677.
10.1007/s11242-020-01462-5.
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Abstract
Apparent liquid permeability (ALP) in ultra-confined permeable media is primarily governed by the pore confinement and fluid–rock interactions. A new ALP model is required to predict the interactive effect of the above two on the flow in mixed-wet, heterogeneous nanoporous media. This study derives an ALP model and integrates the compiled results from molecular dynamics (MD) simulations, scanning electron microscopy, atomic force microscopy, and mercury injection capillary pressure. The ALP model assumes viscous forces, capillary forces, and liquid slippage in tortuous, rough pore throats. Predictions of the slippage of water and octane are validated against MD data reported in the literature. In up-scaling the proposed liquid transport model to the representative-elementary-volume scale, we integrate the geological fractals of the shale rock samples including their pore size distribution, pore throat tortuosity, and pore-surface roughness. Sensitivity results for the ALP indicate that when the pore size is below 100 nm pore confinement allows oil to slip in both hydrophobic and hydrophilic pores, yet it also restricts the ALP due to the restricted intrinsic permeability. The ALP reduces to the well-established Carman–Kozeny equation for no-slip viscous flow in a bundle of capillaries, which reveals a distinguishable liquid flow behavior in shales versus conventional rocks. Compared to the Klinkenberg equation, the proposed ALP model reveals an important insight into the similarities and differences between liquid versus gas flow in shales.
| Type: | Article |
|---|---|
| Title: | Apparent Liquid Permeability in Mixed-Wet Shale Permeable Media |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/s11242-020-01462-5 |
| Publisher version: | https://doi.org/10.1007/s11242-020-01462-5 |
| Language: | English |
| Additional information: | This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
| Keywords: | Science & Technology, Technology, Engineering, Chemical, Engineering, Apparent liquid permeability, Nanoporous media, Confinement effect, Liquid slippage, Carman-Kozeny equation, FAST WATER TRANSPORT, CARBON NANOTUBES, OIL TRANSPORT, HYDROPHILIC SURFACES, INTERFACIAL WATER, ORGANIC-MATTER, FLUID-FLOW, GAS-FLOW, MODEL, NANOPORES |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10114479 |
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