Numerical modeling and simulation of carbon dioxide storage capacity of the Moxa Arch site, southwestern Wyoming

The objective of the Moxa Arch geological CO2 sequestration project is to assess the geological CO2 storage capacity of saline aquifers in the Pennsylvanian Weber Sandstone in southwestern Wyoming. A 3-D seismic survey was selected and a fine-scale geological model was developed based on the integration of seismic interpretation, outcrop mapping, and other available information. The preliminary results from numerical simulations of CO2 storage scenarios were presented. The two goals of the simulation study were as follows: optimize the CO2sequestration strategy within geological constraints, and examines the long-term fate of CO2 stored in this formation. Commercial numerical simulators and research simulators are used in the simulation study, and calibrated simulation results from the research simulators with those from the commercial simulator, usually a robust approach. The new research results and on-site observations were integrated into the research simulator for specific examination of CO2 sequestration and storage at site.