• Cuttings Transport in Inclined Sections 

      Kosberg, Birgitte Ruud (Master thesis, 2017)
      Mud rheology is a key parameter in hole cleaning efficiency. Field data suggests that oil-based drilling fluids perform better compared to water based drilling fluids in the field, even with identical rheological properties, ...
    • 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 ...
    • Flow properties of water-based drilling fluids 

      Kristensen, Aleksander (Master thesis, 2013)
      The objective of this master thesis was to investigate the flow properties of water based drilling fluids, utilizing measurements in both the micro and macro scale. The research was performed on two realistic drilling ...
    • Hole-cleaning performance comparison of oil-based and water-based drilling fluids 

      Sayindla, Sneha; Lund, Bjørnar; Ytrehus, Jan David; Saasen, Arild (Journal article, 2017)
      Cuttings transport is a topic of great interest in the oil and gas drilling industry. Insufficient cuttings transport leads to several expensive problems. Knowledge and selection of the drilling fluids is one of the important ...
    • Use of Tracer Particles for Tracking Fluid Interfaces in Primary Cementing 

      Taheri, Amir; Ytrehus, Jan David; Taghipour, Ali; Lund, Bjørnar; Lavrov, Alexandre; Torsæter, Malin (Chapter, 2019)
      In this study, a new approach for detailed tracking of the interface between well fluid and cement by using particles is investigated. This can improve the quality of annular cementing of CO2 wells and thus the storage ...