Evaluation of CO2 leakage to aquifers and the surface from a multiscale approach combining flow along the wellbore and the overburden

Alain Thoraval (1) , Yvi Le Guen (2) , Régis Farret (1) , Ronan Le Meur (2) , Emmanuel Houdu (2)

1 INERIS - Institut National de l'Environnement Industriel et des Risques
2 OXAND S.A.

It has been demonstrated that CO2 migration along a well is one of the greatest risks of CO2 migration out of a storage reservoir, for two reasons: CO2 migration along the injection well to the geology, and CO2 migration from geology to a remote well). Indeed, such combinations of vertical and horizontal flows may lead in a longer term to the migration of both CO2 and its impurities towards a critical aquifer or to the surface level, which are 'altered' scenarios that are to be considered in a risk assessment frame.

Mots clés: 2-PHASE FLOW; GAS LEAKAGE; WELL; RISK ANALYSIS; SAFETY DEMONSTRATION; CO2; STORAGE

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

Alain Thoraval, Yvi Le Guen, Régis Farret, Ronan Le Meur, Emmanuel Houdu. Evaluation of CO2 leakage to aquifers and the surface from a multiscale approach combining flow along the wellbore and the overburden. 6. Trondheim CCS Conference (TCCS-6), Jun 2011, Trondheim, Norway. ⟨ineris-00970847⟩