• Cement Displacement Efficiency in Rough Pipes 

      Johansen, Espen; Giil, Gunnar Lia (Master thesis, 2017)
      Research within casing string cementing is important in the oil industry. The integrity of an oil well is dependent on the quality of the cement job, and a poor cement job can put the environment, company economics and ...
    • Effect of Preconditioning and Ageing on Rheological Properties of Model Drilling Fluids 

      Werner, Benjamin; Lund, Bjørnar; Kosberg, Birgitte; Johansen, Espen; Giil, Gunnar Lia; Ytrehus, Jan David (Chapter, 2017)
      Many drilling fluids are thixotropic, meaning that viscosity decreases with time when subjected to shear. Other fluids may show anti-thixotropic (rheopectic) behavior, i.e. viscosity increase with time when subjected to ...