The "Application of Time-Lapse Seismic Monitoring for the Control and Optimization of CO2 Enhanced Oil Recovery Operations" project is investigating the potential for monitoring CO2 floods in carbonate reservoirs through the use of standard p-wave seismic data. This project will involve the use of 4D seismic (time lapse seismic) to try to observe the movement of the CO2 through the reservoir. The differences between certain seismic attributes, such as amplitude, will be used to map this movement. The project is being conducting in the Charleton 30/31 field in northern Michigan Basin. This field is a Silurian pinnacle reef that has completed its primary production and is now being prepared for an enhanced oil recovery project using CO2. This field will begin its CO2 flood during 2005.