Geochemical assessment of isolation performance during 10 years of CO2 EOR at Weyburn

J.W. Johnson
2011 Energy Procedia  
The Final-Phase Weyburn geochemical research program includes explicitly integrated yet conceptually distinct monitoring, modeling, and experimental components. The principal objectives are to monitor CO 2 -induced compositional evolution within the reservoir through time-lapse sampling and chemical analysis of produced fluids; to document the absence (or presence) of injected CO 2 within reservoir overburden through analogous monitoring of shallow groundwater and soil gas; to predict
more » ... voir CO 2 migration paths, dynamic CO 2 mass partitioning among distinct trapping mechanisms, and reservoir/seal permeability evolution through reactive transport modeling; to assess the impact of CO 2 -brine-rock reactions on fracture flow and isolation performance through experimental studies that directly support the monitoring and modeling work; and to exploit a novel stochastic inversion technique that enables explicit integration of these diverse monitoring data and forward models to improve reservoir characterization and long-term forecasts of isolation performance.
doi:10.1016/j.egypro.2011.02.297 fatcat:u6f33qfhdnbavepltfprxtx7au