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Abstract
Several strategies were tested and studied to find injection and production procedures that “cooptimize” oil recovery and CO 2 storage. The results show that traditional reservoir engineering techniques such as injecting CO 2 and water in a sequential, so-called water-alternating-gas process are not conducive to maximize CO 2 stored within the reservoir. A well control process that shuts in wells producing large volumes of gas and allows shut-in wells to open as reservoir pressure increases was a successful strategy for co-optimization. This result holds for immiscible and miscible gas injection and can be improved when miscible gas injection is followed by pure CO 2 injection. Combining this strategy with well-control technique produced the maximum amount of oil and simultaneously stored the most CO 2 giving robust results.
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