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Improved formulation for gravity segregation in naturally fractured reservoirs
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, IOR 1991 - 6th European Symposium on Improved Oil Recovery, May 1991, cp-44-00073
- ISBN: 978-94-6282-133-0
Abstract
This paper proposes improved dual-porosity formulations for gas-oil pseudo-capillary pressure and equilibrium gas saturation. These förmulations take account of the effect of oil reinfiltration. fracture slope and capillary continuity across fractures. For most of the highly fractured reservoirs encountered in the North-Sea and in Middle-Eas,. current numerical simulators may not adequately predict long term performances, due to improper treatment of gravity segregation. even though they are tuned to satisfy early history.