• Numerical Modeling of Radial Fracturing of Cement Sheath Caused by Pressure Tests 

      Gheibi, Sohrab; Sangesland, Sigbjørn; Vrålstad, Torbjørn (Chapter; Peer reviewed, 2019)
      To achieve an acceptable level of zonal isolation, well integrity should be guaranteed in hydrocarbon production and geological CO2 sequestration. Well pressure test can cause different types of failures in the well system ...
    • Simulation of fluid flow through real microannuli geometries 

      Corina, Anisa Noor; Skorpa, Ragnhild; Sangesland, Sigbjørn; Vrålstad, Torbjørn (Peer reviewed; Journal article, 2020)
      Debonding of well cement towards casing or rock, i.e. microannuli formation, is a typical failure mode of cement barriers. Consequently, such microannuli may act as leak paths during leakages of downhole fluids such as ...