Viscous stabilization of the invasion front in drainage displacement
نویسندگان
چکیده
We investigate the stabilization mechanisms due to viscous forces of the invasion front in drainage displacement in two dimensional porous media using a network simulator. We find that in horizontal displacement the capillary pressure difference between two different points along the front vary linearly as function of height separation in the direction of the displacement. We conclude that existing theory from percolation fails to describe our simulation results. We have also compared our results with some experimental data and find that the width of the front scales similar to gravitational stabilization.
منابع مشابه
A Numerical Study of Capillary and Viscous Drainage in Porous Media
This paper concentrates on the flow properties when one fluid displaces another fluid in a two-dimensional (2D) network of pores and throats. We consider the scale where individual pores enter the description and we use a network model to simulate the displacement process. We study the interplay between the pressure build up in the fluids and the displacement structure in drainage. We find that...
متن کاملInvasion Percolation in Presence of Gravity
Simultaneous capillary dominated displacement of the wetting and non-wetting phases are processes of interest in many disciplines including modeling of the penetration of polluting liquids in hydrology or the secondary migration in petroleum reservoir engineering. Percolation models and in particular invasion percolation is well suited to characterize the slow immiscible displaceme...
متن کاملInterface scaling in a two-dimensional porous medium under combined viscous, gravity, and capillary effects.
We have investigated experimentally the competition between viscous, capillary, and gravity forces during drainage in a two-dimensional synthetic porous medium. The displacement of a mixture of glycerol and water by air at constant withdrawal rate has been studied. The setup can be tilted to tune gravity, and pressure is recorded at the outlet of the model. Viscous forces tend to destabilize th...
متن کاملCrossover from fingering to fracturing in deformable disordered media.
We investigate the displacement of one fluid by another in a deformable medium with pore-scale disorder. We develop a model that captures the dynamic pressure redistribution at the invasion front and the feedback between fluid invasion and microstructure rearrangement. Our results suggest how to collapse the transition between invasion percolation and viscous fingering in the presence of quench...
متن کاملCompetition of gravity, capillary and viscous forces during drainage in a two-dimensional porous medium, a pore scale study
We have studied experimentally and numerically the displacement of a highly viscous wetting fluid by a non-wetting fluid with low viscosity in a random two-dimensional porous medium under stabilizing gravity. In situations where the magnitudes of the viscous-, capillaryand gravity forces are comparable, we observe a transition from a capillary fingering behavior to a viscous fingering behavior,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999