Abstract
Accepted practice dictates that waterflooding of gas reservoirs should commence, if ever, only when the reservoir pressure has declined to the minimum production pressure. Analytical proof of this hypothesis has yet to appear in the literature however. This paper considers a model for a gas-water reservoir with a variable production rate and enhanced recovery with waterflooding and, using an initial dynamic programming approach, confirms the above hypothesis.
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References
Johnson, M. E., McFarland, J. W., Monash, E. A., and Lohrenz, J., 1977, MER (maximum efficient rate) using a gas reservoir model with waterflooding: Los Alamos Scientific Laboratory report LA-6989-MS.
Johnson, M. E., Waterman, M. S., Monash, E. A., 1978, Modeling and optimizing a gas-water reservoir: Los Alamos Scientific Laboratory report LA-7088.
Mantini, L. A. and Beyer, W. A., 1977, Optimization of natural gas production by waterflooding: Los Alamos Scientific Laboratory report, LA-UR-77-2273. Accepted for publication in Applied Mathematics and Optimization.
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Johnson, M.E., Monash, E.A. & Waterman, M.S. Modeling and optimizing a gas—water reservoir: Enhanced recovery with waterflooding. Mathematical Geology 11, 63–74 (1979). https://doi.org/10.1007/BF01043246
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DOI: https://doi.org/10.1007/BF01043246