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Transport in Porous Media

, Volume 92, Issue 1, pp 145–164 | Cite as

A Dynamic Network Model for Two-Phase Flow in Porous Media

  • Glenn Tørå
  • Pål-Eric Øren
  • Alex HansenEmail author
Article

Abstract

We present a dynamic model of immiscible two-phase flow in a network representation of a porous medium. The model is based on the governing equations describing two-phase flow in porous media, and can handle both drainage, imbibition, and steady-state displacement. Dynamic wetting layers in corners of the pore space are incorporated, with focus on modeling resistivity measurements on saturated rocks at different capillary numbers. The flow simulations are performed on a realistic network of a sandpack which is perfectly water-wet. Our numerical results show saturation profiles for imbibition in agreement with experiments. For free spontaneous imbibition we find that the imbibition rate follows the Washburn relation, i.e., the water saturation increases proportionally to the square root of time. We also reproduce rate effects in the resistivity index for drainage and imbibition.

Keywords

Network model Two-phase flow Reconstructed porous media Imbibition Resistivity index 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Department of PhysicsNorwegian University of Science and TechnologyTrondheimNorway
  2. 2.Numerical Rocks ASTrondheimNorway

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