Project Final Report-09123-18-The study from a previous laboratory research project funded by RPSEA/NETL indicated that favorable mechanisms to improve oil recovery by injection of CO2 at near miscible conditions are achievable at reservoir temperature at the Ogallah unit in Kansas. The initial plan of this study was to apply various engineering tests to characterize this mature oil field for a future pilot test of near miscible CO2. The plan was modified with the approval of RPSEA later to continue the project with objectives to 1) use an integrated methodology to construct an improved geological model in the Ogallah unit, 2) demonstrate the feasibility of CO2 near miscible injection to mobilize the oil with a single well pilot test in an oil field produced from the Arbuckle formation, and 3) conduct reservoir simulation with the companion reservoir model to investigate the reservoir performance of near miscible CO2 flooding applications