Zhao, J orcid.org/0000-0002-8714-7798, Yao, G and Wen, D orcid.org/0000-0003-3492-7982 (2019) Pore-scale simulation of water/oil displacement in a water-wet channel. Frontiers of Chemical Science and Engineering, 13 (4). pp. 803-814. ISSN 2095-0187
Abstract
Water/oil flow characteristics in a water-wet capillary were simulated at the pore scale to increase our understanding on immiscible flow and enhanced oil recovery. Volume of fluid method was used to capture the interface between oil and water and a pore-throat connecting structure was established to investigate the effects of viscosity, interfacial tension (IFT) and capillary number (Ca). The results show that during a water displacement process, an initial continuous oil phase can be snapped off in the water-wet pore due to the capillary effect. By altering the viscosity of the displacing fluid and the IFT between the wetting and non-wetting phases, the snapped-off phenomenon can be eliminated or reduced during the displacement. A stable displacement can be obtained under high Ca number conditions. Different displacement effects can be obtained at the same Ca number due to its significant influence on the flow state, i.e., snapped-off flow, transient flow and stable flow, and ultralow IFT alone would not ensure a very high recovery rate due to the fingering flow occurrence. A flow chart relating flow states and the corresponding oil recovery factor is established.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © The Author(s) 2019. 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: | VOF; pore scale; immiscible displacement; EOR; snap-off; Ca |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) |
Funding Information: | Funder Grant number EU - European Union 648375 |
Depositing User: | Symplectic Publications |
Date Deposited: | 06 Jan 2020 10:38 |
Last Modified: | 25 Jun 2023 22:06 |
Status: | Published |
Publisher: | Higher Education Press |
Identification Number: | 10.1007/s11705-019-1835-y |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:155141 |
Download
Filename: Zhao2019_Article_Pore-scaleSimulationOfWaterOil.pdf
Licence: CC-BY 4.0