A vertically integrated model with vertical dynamics for CO2 storage

Bo Guo*, Karl W. Bandilla, Florian Doster, Eirik Keilegavlen, Michael A. Celia

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)
100 Downloads (Pure)


Conventional vertically integrated models for CO2 storage usually adopt a vertical equilibrium (VE) assumption, which states that due to strong buoyancy, CO2 and brine segregate quickly, so that the fluids can be assumed to have essentially hydrostatic pressure distributions in the vertical direction. However, the VE assumption is inappropriate when the time scale of fluid segregation is not small relative to the simulation time. By casting the vertically integrated equations into a multiscale framework, a new vertically integrated model can be developed that relaxes the VE assumption, thereby allowing vertical dynamics to be modeled explicitly. The model maintains much of the computational efficiency of vertical integration while allowing a much wider range of problems to be modeled. Numerical tests of the new model, using injection scenarios with typical parameter sets, show excellent behavior of the new approach for homogeneous geologic formations.

Original languageEnglish
Pages (from-to)6269-6284
Number of pages16
JournalWater Resources Research
Issue number8
Publication statusPublished - Aug 2014


  • CO storage
  • Dynamic reconstruction
  • Multiscale method
  • Two-phase flow modeling
  • Vertically integrated models

ASJC Scopus subject areas

  • Water Science and Technology


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