Now showing items 1-7 of 7

  • Field-case simulation of CO2-plume migration using vertical-equilibrium models 

    Nilsen, Halvor Møll; Herrera, Paulo; Ashraf, Seyed Meisam; Ligaard, Ingeborg S.; Iding, Martin; Hermanrud, Christian; Lie, Knut-Andreas; Nordbotten, Jan Martin; Dahle, Helge K.; Keilegavlen, Eirik (Elsevier, 2011)
    When injected in deep saline aquifers, CO2 moves radially away from the injection well and progressively higher in the formation because of buoyancy forces. Analyzes have shown that after the injection period, CO2 will ...
    Journal article
  • Operator splitting methods for systems of convection-diffusion equations: nonlinear error mechanisms and correction strategies 

    Karlsen, Kenneth Hvistendahl; Lie, Knut-Andreas; Natvig, Jostein Roald; Nordhaug, Hans Fredrik; Dahle, Helge K. (Elsevier, 2001)
    Many numerical methods for systems of convection-diffusion equations are based upon an operator splitting formulation, where convective and diffusive forces are accounted for in separate substeps. We describe the nonlinear ...
    Journal articlePeer reviewed
  • A pore network model for calculation of interfacial velocities 

    Nordhaug, Hans Fredrik; Celia, Michael A.; Dahle, Helge K. (Elsevier Science, 2003)
    Two-phase flow in porous media is characterized by fluid-fluid interfaces that separate the fluid phases at the pore scale. These interfaces support pressure differences between phases, and their dynamics allow for ...
    Journal articlePeer reviewed
  • A Streamline Front Tracking Method for Two- and Three-Phase Flow Including Capillary Forces 

    Berre, Inga; Dahle, Helge K.; Karlsen, Kenneth Hvistendahl; Nordhaug, Hans Fredrik (American Mathematical Society, 2002)
  • SUCCESS: SUbsurface CO2 storage–Critical elements and superior strategy 

    Aker, Eyvind; Bjørnarå, Tore Ingvald; Braathen, Alvar; Brandvoll, Øyvind; Dahle, Helge K.; Nordbotten, Jan Martin; Aagaard, Per; Hellevang, Helge; Alemu, Binyam Lema; Pham, Van Thi Hai; Johansen, Harald; Wangen, Magnus; Nøttvedt, Arvid; Aavatsmark, Ivar; Johannessen, Truls; Durand, Dominique (Elsevier, 2011)
    SUCCESS is a Center for Environmental Energy Research in Norway and performs research related to geological storage of CO2 in the subsurface. The SUCCESS centre is established by the Research Council of Norway together ...
    Journal article
  • Two phase flow including interfacial area as a variable 

    Nordhaug, Hans Fredrik; Dahle, Helge K.; Espedal, Magne S.; Gray, William G.; Celia, Michael A. (The XIII international conference on computational methods in water resources, 2000)
    Based on the procedure of (Gray & Hassanizadeh 1998) we state macroscale conservation equations for multi phase flow in porous media including interfacial area as a variable. The phases we consider are a solid phase, a ...
    Journal article
  • Upscaled modeling of CO2 injection and migration with coupled thermal processes 

    Gasda, Sarah Eileen; Stephansen, Annette; Aavatsmark, Ivar; Dahle, Helge K. (Elsevier, 2013)
    A practical modeling approach for CO2 storage over relatively large length and time scales is the vertical-equilibrium model, which solves partially integrated conservation equations for flow in two lateral dimensions. ...
    Journal article