Evaluation of CO2 leakages from an aquifer storage

Alain Thoraval (1) , Régis Farret (1) , Auxane Cherkaoui (1) , Philippe Gombert (1)

1 INERIS - Institut National de l'Environnement Industriel et des Risques

This paper presents preliminary estimations of CO2 overpressure into the reservoir and CO2 leakage through the caprock and the overburden. A simple, two-phase flow model in porous media based on Darcy's law was used, in order to explore easily long time periods. The models allow sensitivity studies and preliminary evaluations of the relations between CO2 leakage (time needed for the CO2 to reach the surface; value of the CO2 flowrate at the steady state), the caprock characteristics (thickness and permeability) and CO2 overpressure.

Mots clés: CO2 GEOLOGICAL STORAGE; 2-PHASE FLOW; GAS LEAKAGE

Domaines: Sciences de la Terre; Sciences de l'environnement

Alain Thoraval, Régis Farret, Auxane Cherkaoui, Philippe Gombert. Evaluation of CO2 leakages from an aquifer storage. COMSOL Conference 2010, Nov 2010, Paris, France. pp.NC. ⟨ineris-00976308⟩