Sophie Roman
Associate Professor, University of Orléans (France)
Two-phase flow regimes in pore-doublet micromodels
Two-phase experiment in a pore-doublet micromodel
A non-wetting fluid (air) displaces a wetting fluid (water/glycerin).
Depending on the properties of the fluids and of the flow, different flow regimes are identified. One channel is not invaded for the capillary flow regime, leading to high residual saturation. On the contrary, for the crossover flow regime, no wetting fluid is left behind after the invasion. This study allows us to identify the pore-invasion mechanisms related to each flow regime.
https://doi.org/10.1016/j.advwatres.2022.104353
Dimensions of the entry channel: 40µmx40µm
Two-phase flows in micromodels
Two-phase experiment in a micromodel that represents complex natural porous media (sandstone)
A non-wetting fluid (oil) displaces a wetting fluid (water/glycerin).
Black: grains
Green: water/glycerin + particles
White: oil
Size: 100µmx150µm (x12µm depth)
Two-phase experiment in a micromodel that represents complex natural porous media (sandstone)
A non-wetting fluid (oil) displaces a wetting fluid (water/glycerin).
Grey: grains
Green: water/glycerin + particles
White: oil
The approaching interface result in the perturbation of the flow pattern.
Two-phase experiment in a micromodel that represents complex natural porous media (sandstone)
A non-wetting fluid (oil) displaces a wetting fluid (water/glycerin).
After the passage of the interface (oil in white), preferential paths continue to change
Gray: grains
White: oil
Green: water/glycerin + particles