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Features concerning capillary pressure and the effect on two-phase and three-phase flow

Dale, Elisabeth Iren; Skauge, Arne
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URI
https://hdl.handle.net/1956/5263
Date
2008-04-30
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  • Department of Physics and Technology [1343]
Abstract
The effect of capillary pressure related to immiscible WAG (Water Alternate Gas) is studied by use of a numerical simulator. The capillary pressure is found to have a significant effect on the pressure gradient and the total oil production both in two-phase and three-phase flow situations. When the capillary pressure is included in the simulation the total oil production is considerably lower than when the capillary pressure is neglected. Experimentally measured two-phase capillary pressure was used as input to the numerical simulator. The two-phase capillary pressure was further used to estimate three-phase flow, related to WAG processes. A network model was applied to generate a consistent set of two-phase and three-phase capillary pressure. The network model was anchored to measured two-phase data, and threephase capillary pressure was constructed. The gas-oil and mercury capillary pressure anchored the pore structure parameters, while water-oil capillary pressure anchors the wettability parameters in the network model. The network model quantifies the difference between three-phase and two-phase capillary pressure, and in the cases studied the difference between two-phase and three-phase capillary pressure was significant.
Description
14th European Symposium on Improved Oil Recovery, Cairo, Egypt, 22. – 24. April 2007
Publisher
EAGE
Copyright
Copyright the authors. All rights reserved

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