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Transport in Porous Media

, 76:449 | Cite as

A Model of Buoyancy-Driven Two-Phase Countercurrent Fluid Flow

  • Dmitriy SilinEmail author
  • Tad Patzek
  • Sally M. Benson
Article

Abstract

We seek simple analytical solutions in a model of gas flow driven by a combination of buoyancy, viscous, and capillary forces. Traveling-wave solutions describe propagation of the top and bottom of the gas plume. The top of the plume has low gas saturation, but propagates much faster than the bottom. The theoretical maximum of the velocity of propagation of the top of the plume provides a simple conservative estimate of the time until plume evolution will dramatically slow down. A sequence of rarefaction and traveling-wave solutions characterizes the transition zones between the top and bottom stable regions. The analytical results are applied to studying carbon dioxide flow caused by leaks from deep geological formations used for CO2 storage. The results are also applicable for modeling flow of natural gas leaking from seasonal gas storage, or for modeling of secondary hydrocarbon migration.

Keywords

Multiphase flow Porous media Gas migration Darcy’s law 

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.Lawrence Berkeley National LaboratoryBerkeleyUSA
  2. 2.University of California, BerkeleyBerkeleyUSA
  3. 3.Energy Resources Engineering DepartmentStanford UniversityStanfordUSA

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