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Transport in Porous Media

, Volume 26, Issue 1, pp 75–88 | Cite as

The Modeling of Velocity Enhancement in Polymer Flooding

  • G. A. Bartelds
  • J. Bruining
  • J. Molenaar
Article

Abstract

In single-phase polymer flooding experiments it has repeatedly been observed that the average velocity of the polymer molecules is higher than the average velocity of the water molecules. This effect is incorporated in many conventional Enhanced Oil Recovery (EOR) simulators by the introduction of a constant velocity enhancement factor. In this paper we show that, in absence of dispersion, a constant enhancement factor in the mathematical model for two-phase polymer flow (Buckley--Leverett displacement) leads to ill-posedness of the model equations. We propose a saturation dependent enhancement factor, derived from a model based on percolation concepts, for which this problem does not occur.

polymer flooding velocity enhancement inaccessible pore volume excluded pore volume loss of hyperbolicity ill-posed model equations polymer accumulation. 

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Copyright information

© Kluwer Academic Publishers 1997

Authors and Affiliations

  • G. A. Bartelds
    • 1
  • J. Bruining
    • 1
  • J. Molenaar
    • 2
  1. 1.Dietz Laboratory, Faculty of Mining and Petroleum EngineeringDelft University of TechnologyDelftThe Netherlands
  2. 2.CWIAmsterdamThe Netherlands

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