Blar i Department of Energy and Petroleum Engineering (TN-IEP) på forfatter "Giljarhus, Knut Erik Teigen"

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    • Computational fluid dynamics simulation of buoyant mixing of miscible fluids in a tilted tube 

      Ghorbani, Maryam; Giljarhus, Knut Erik Teigen; Skadsem, Hans Joakim; Time, Rune Wiggo (Peer reviewed; Journal article, 2021)
      Buoyancy-driven flows and mixing of fluids with different densities occur frequently both in nature and as part of industrial processes within chemical and petroleum engineering. This work investigates the buoyant exchange ...

    • Influence of fluid viscosity hierarchy on the reverse-circulation displacement efficiency 

      Ghorbani, Maryam; Giljarhus, Knut Erik Teigen; Skadsem, Hans Joakim (Peer reviewed; Journal article, 2023)
      Reverse-circulation cementing is an alternative strategy for well cementing where the cementing fluids are injected directly into the annulus from the surface. This cementing strategy can reduce downhole circulation pressures ...

    • Vibration-assisted annular fluid displacement for rig-less well abandonment operations 

      Skadsem, Hans Joakim; Giljarhus, Knut Erik Teigen; Øijordsbakken Fredheim, Fiona; van Riet, Egbert; Keultjes, Wout J. G. (Peer reviewed; Journal article, 2022-06)
      Through-tubing abandonment is the operation where the production tubing is cut or punched and cemented inside the production casing. This can establish a full cross-sectional barrier or isolation in wells where the cement ...