Risk associated to storage of CO₂ in carboniferous formations. Application of Bayesian networks

In this publication risk assessment involved in storage of CO₂ is presented, with a particular focus on cases where the injection is made into unminable coal seams and in abandoned coal mines. The risks associate with earlier stages of storage and during storage is analyzed in detail and different types of hazard scenarios are described. The importance of monitoring is emphasized in order to prevent risks. Some applications concerning the Risk Assessment of CO₂ injection processes and storage in carboniferous formations and contamination of aquifers by CO₂ are presented and analyzed using Bayesian Networks for different hazard scenarios. Finally, based on the applications of Bayesian Networks several conclusions were made.