caa a22 4500 463162633 CHVBK 20180406164752.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s11242-007-9102-y doi (NATIONALLICENCE)springer-10.1007/s11242-007-9102-y Experimental evidence of ultrasonic stimulation of brine-oil flow through a porous rock in laboratory conditions [Elektronische Daten] [Xiaoyun Tu, Gijsbert Ooms, Fred van der Tu] Laboratory experiments have been carried out to study the influence of high-frequency (20kHz) acoustic waves on the flow of brine through a core sample of reservoir rock containing residual oil. The experiments were done at reservoir conditions with respect to temperature and pressure. Below a certain critical level of the acoustic intensity the relative permeability for the flow of brine is independent of the acoustic intensity and there is no flow of oil out of the core. However, above the critical level the relative permeability for the brine flow jumps to a significantly higher value and oil starts to flow from the core. These experimental results are in agreement with a theoretical model proposed by Graham and Higdon [Oscillatory flow of droplets in capillary tubes Part 2 Constricted tubes. J. Fluid Mech. 425, 55-77 (2000)]. The model is based on a microscopic picture of oil drops (surrounded by flowing brine) being trapped inside the pores of the reservoir rock. Under the influence of ultrasonic waves the oil drops oscillate and can escape from their pores above a critical level of the acoustic intensity. Springer Science+Business Media, Inc., 2007 Tu Xiaoyun J. M. Burgers Centre, Delft University of Technology, Laboratory for Aero- and Hydrodynamics, Leeghwaterstraat 21, 2628 CA, Delft, The Netherlands aut Ooms Gijsbert J. M. Burgers Centre, Delft University of Technology, Laboratory for Aero- and Hydrodynamics, Leeghwaterstraat 21, 2628 CA, Delft, The Netherlands aut van der Tu Fred Shell International Exploration and Production, Technology Application and Research, P.O. Box 60, 2280 AB, Rijswijk, The Netherlands aut Transport in Porous Media Springer Netherlands 70/3(2007-12-01), 323-333 0169-3913 70:3<323 2007 70 11242 https://doi.org/10.1007/s11242-007-9102-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11242-007-9102-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tu Xiaoyun J. M. Burgers Centre, Delft University of Technology, Laboratory for Aero- and Hydrodynamics, Leeghwaterstraat 21, 2628 CA, Delft, The Netherlands aut NATIONALLICENCE 700 1- Ooms Gijsbert J. M. Burgers Centre, Delft University of Technology, Laboratory for Aero- and Hydrodynamics, Leeghwaterstraat 21, 2628 CA, Delft, The Netherlands aut NATIONALLICENCE 700 1- van der Tu Fred Shell International Exploration and Production, Technology Application and Research, P.O. Box 60, 2280 AB, Rijswijk, The Netherlands aut NATIONALLICENCE 773 0- Transport in Porous Media Springer Netherlands 70/3(2007-12-01), 323-333 0169-3913 70:3<323 2007 70 11242 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer