Pure liquid phase recovery in karstic medium

This project is about the study in 2D-cells of fractured media, contaminated by pure phase hydrocarbons. Cosidered systems are made of 3 non-miscible fluids (air, water and hydrocarbons), considering light and dense hydrocarbons. First, the fluids behavior and the distribution of contaminants were studied, considering strong hydraulic variations. Then, the use of partition tracer tests to amount residual saturations of hydrocarbons and their specific area are tested, and correlated with mass balance and visual observations. Finally, the use of various fluids for the recovery of pure phase hydrocarbons was studied, considering mass balances on contaminants to better understand the mechanisms involved.