It is important to predict the economical feasibility of geological sequestration of CO2. This paper applies reservoir simulation to model the characteristics of CO2 injection in the specific injection site location.It could provide input to the economic evaluations by defining Bottom Hole Pressure and injection relationships. Selecting an appropriate grid system was particularly discussed in this study. The flexible corner point grid system and grid refinement technology were proven to be suitable for the simulation of CO2 geological sequestration. By this approach, we finally obtained the ultimate capacity of reservoir to store CO2, and further produced data about different possible injection scenarios needed for economic modeling. It was concluded that the geological structure and direction of CO2 migration were two important factors in the selection of the optimum well pattern. The results showed that using one well can satisfy the injection requirement, and also CO2 geological sequestration in the Barrow Sub-basin is feasible.

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