caa a22 4500 463162994 CHVBK 20180406164753.0 cr unu---uuuuu 170326e20070201xx s 000 0 eng 10.1007/s11242-006-0017-9 doi (NATIONALLICENCE)springer-10.1007/s11242-006-0017-9 Pore-scale Simulation of Water Alternate Gas Injection [Elektronische Daten] [V. Suicmez, Mohammad Piri, Martin Blunt] We use a three-dimensional mixed-wet random network model representing Berea sandstone to compute displacement paths and relative permeabilities for water alternating gas (WAG) flooding. First we reproduce cycles of water and gas injection observed in previously published experimental studies. We predict the measured oil, water and gas relative permeabilities accurately. We discuss the hysteresis trends in the water and gas relative permeabilities and compare the behavior of water-wet and oil-wet media. We interpret the results in terms of pore-scale displacements. In water-wet media the water relative permeability is lower during water injection in the presence of gas due to an increase in oil/water capillary pressure that causes a decrease in wetting layer conductance. The gas relative permeability is higher for displacement cycles after first gas injection at high gas saturation due to cooperative pore filling, but lower at low saturation due to trapping. In oil-wet media, the water relative permeability remains low until water-filled elements span the system at which point the relative permeability increases rapidly. The gas relative permeability is lower in the presence of water than oil because it is no longer the most non-wetting phase. Springer, 2007 network modeling nationallicence three-phase flow nationallicence wettability nationallicence relative permeability nationallicence multiple displacements nationallicence pore occupancy nationallicence Suicmez V. Department of Earth Science and Engineering, Imperial College London, SW7 2AZ, London, UK aut Piri Mohammad Department of Chemical and Petroleum Engineering, University of Wyoming, 82071, Laramie, Wyoming, USA aut Blunt Martin Department of Earth Science and Engineering, Imperial College London, SW7 2AZ, London, UK aut Transport in Porous Media Kluwer Academic Publishers 66/3(2007-02-01), 259-286 0169-3913 66:3<259 2007 66 11242 https://doi.org/10.1007/s11242-006-0017-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11242-006-0017-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Suicmez V. Department of Earth Science and Engineering, Imperial College London, SW7 2AZ, London, UK aut NATIONALLICENCE 700 1- Piri Mohammad Department of Chemical and Petroleum Engineering, University of Wyoming, 82071, Laramie, Wyoming, USA aut NATIONALLICENCE 700 1- Blunt Martin Department of Earth Science and Engineering, Imperial College London, SW7 2AZ, London, UK aut NATIONALLICENCE 773 0- Transport in Porous Media Kluwer Academic Publishers 66/3(2007-02-01), 259-286 0169-3913 66:3<259 2007 66 11242 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer