More than eight billion barrels of oil will remain in Gulf of Mexico reservoirs at the end of primary and secondary operations. This study is designed to determine whether a portion of this can be produced by enhanced oil recovery (EOR) methods. All oil reservoirs with more than 2.5 MMB original oil-in-place in the Federal Offshore region of the Gulf of Mexico were screened by geological criteria to determine general amenability to EOR. One hundred seventy-six individual reservoirs, in 100 "horizons" (near adjacency at comparable depth), were identified. In all, 40 fields had one or more geologically acceptable horizons. This paper describes the characteristics of these reservoirs and projects the timing of their abandonment. The prospective reservoirs are currently undergoing detailed technical and economic evaluation. The paper also includes this evaluation for example reservoirs. (Full results will be presented at the Symposium.)

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