Petrophysical characterization of porous media starting from micro-tomographic images |
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| Institution: | 1. Department of Chemical and Petroleum Engineering, University of Calgary, AB, Canada T2N1N4;2. PERM Inc. TIPM Laboratory;1. School of Geography & Earth Sciences, McMaster University, 1280 Main St. West, Hamilton (ON) L8S 4L8, Canada;2. INRS-ETE, 490 rue de la Couronne, Québec (QC) G1K 9A9, Canada;3. Institute Center for Water and Environment (iWATER), Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, UAE;1. National Centre for Groundwater Research and Training, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia;2. School of the Environment, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia;1. Texas Water Resources Institute, Texas A&M University, 1500 Research Parkway A110, College Station, TX 77843-2260, USA;2. Department of Geology and Geophysics, Texas A&M University, College Station, TX 77843-2260, USA;1. Department of Civil and Environmental Engineering, Politecnico di Milano, Milan I-20133, Italy;2. Department of Environmental Sciences, University of Virginia, Charlottesville, VA 22904, United States\n;3. National Socio-Environmental Synthesis Center, University of Maryland, Annapolis, MD 21401, United States\n;1. School of Planning, Architecture and Civil Engineering, Queen''s University Belfast, Belfast BT9 5AG, Northern Ireland, UK;2. School of Geodesy and Geomatics, Wuhan University, Wuhan, 430079, China;3. College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot, 010018, PR China;4. College of Water Sciences, Beijing Normal University, Beijing 100875, PR China;1. School of Civil and Environmental Engineering, Yonsei University, Seoul 120-749, Korea |
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| Abstract: | A quasi-static scheme based on pore space spatial statistics is presented to simulate pore-scale two-phase capillary-dominant displacement processes. The algorithm is coupled with computational fluid dynamics in order to evaluate saturation functions. Wettability heterogeneity in partial and fractional/mixed-wet media is implemented using a contact angle map. The simulation process is pixel-wised and performed directly on binary images. Bypassing and snap-off are tackled as non-wetting phase trapping mechanisms. Post-processing results include residual saturations, effective permeability and capillary pressure curves for drainage and imbibition scenarios. The primary advantages of the proposed workflow are eliminating pore space skeletisation/ discretization, superior time efficiency and minimal numerical drawbacks when compared to other direct or network-based simulation techniques. |
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