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Geological Society, London, Special Publications; 1995; v. 84; p. 29-41;
DOI: 10.1144/GSL.SP.1995.084.01.04
© 1995 Geological Society of London

Reservoir Characterization

An analytical method for calculating the performance of heterogeneous reservoirs and its use in uncertainty analysis

Dagrun Kjønsvik & Jostein Alvestad

Statoil Research Centre, Rotvoll, Postuttak, N-7005 Trondheim, Norway

An efficient analytical method for performance calculations in heterogeneous models is developed, under assumptions of a viscous dominated displacement process and unit mobility ratio. The method provides a quantitative measure of the effects of heterogeneities on displacement characteristics and production performance. Results indicate that the method has a potential for ranking a set of geostatistical reservoir model realizations in terms of production performance, thereby providing a basis for selecting realizations for detailed numerical simulations.