Dresden 2014 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 37: Poster Session 2
CPP 37.26: Poster
Mittwoch, 2. April 2014, 15:00–19:00, P3
Effect of Wettability on Water-Oil Front Progression in Porous Media — •Alen Kabdenov1,2, Hagen Scholl1, Kamaljit Singh2,3, Marco Di Michiel3, Mario Scheel3, Stephan Herminghaus2, and Ralf Seemann1,2 — 1Saarland University, Experimental Physics, D-66041 Saarbrücken, Germany — 2Max Planck Institute for Dynamics and Self-Organization, D-37073 Göttingen, Germany — 3European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble, France
The effect of wettability on the progression of a water front forced into an initially oil filled porous medium is explored using ultrafast X-ray tomography. The wettability of the porous media was controlled using different cleaning and coating procedures, different bead material or using different combinations of experimental fluids. It is shown that for smaller contact angles, the front progresses in a compact shape without any oil trapping and a single pore-volume of water flood is sufficient to reach the final state. By contrast, the front roughens in the case of larger contact angles, and forms several enlarged fingers due to front stopping at smaller throats. When forcing the water front into a porous media with locally varying wettability the less wettable volumes are bypassed or bridged in the first water flush and are eventually penetrated by water at a late stage of the water flush.