The Use of Reservoir Simulation to Obtain Key Parameters for Investigating the Feasibility of Implementing Flue Gas CO2-EOR Coupled with Sequestration in Trinidad

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Abstract Trinidad and Tobago (T&T) has over one hundred years of experience in oil production. In addition, the nation was one of the first to employ enhanced oil recovery via CO 2 flooding. In recent times however, oil production has decreased and the early implemented CO 2 -EOR projects have all ceased. Since T&T is a rapidly developing energy intensive economy, it is amongst the top ten in the world in terms of CO 2 equivalent emissions on a per capita and per GDP basis. Many researchers within the nation and elsewhere have conceptualized that T&T can ironically use its rich history of oil production and CO 2 -EOR to help reduce its emissions. However, to effectively do this, key parameters must be found robustly and scientifically. The paper attempts to do this by outlining a framework for investigating the feasibility of implementing CO 2 -EOR in T&T from flus gas sources. This is done through the use of reservoir simulation in CMG to obtain key parameters needed to investigate this feasibility. An existing natural gas turbine fired power plant in Point Lisas was selected as the CO 2 source allowing actual CO 2 volumes and properties germane to this plant to be used. However, a hypothetical field was chosen as the appropriate sink since the use of actual field data was prohibited by relevant companies in T&T. While this is not ideal, the values used closely resemble actual field data and can easily be modified once permission to use actual field data is acquired. For this hypothetical field, a detailed reservoir model was built. The model was executed, and various scenarios were simulated to determine the optimum number of producers for primary production and the best location of the CO 2 -EOR injectors. Many key parameters were reported from this investigation. These included OIIP, forecasted production and primary recovery, CO 2 utilization rate and total sequestered CO 2 .