• Analysis of nonlinear effects in fluid flows through porous media 

      Zolotukhin, A.B.; Gayubov, A.T. (Peer reviewed; Journal article, 2022-01)
      This article examines the nonlinear effects of fluid flow in a porous medium, governed by a new semi-analytical equation, from three aspects: equation derivation, experimental verification, and macroscale simulation ...
    • Data-Driven Approaches Tests on A Laboratory Drilling System 

      Løken, Erik Andreas; Løkkevik, Jens; Sui, Dan (Peer reviewed; Journal article, 2020)
      In recent years, considerable resources have been invested to exploit vast amounts of data that get collected during exploration, drilling and production of oil and gas. Data-related digital technologies potentially become ...
    • Drilling data quality improvement and information extraction with case studies 

      Geekiyanage, Suranga C. H.; Tunkiel, Andrzej Tadeusz; Sui, Dan (Peer reviewed; Journal article, 2020)
      Data analytics is a process of data acquiring, transforming, interpreting, modelling, displaying and storing data with an aim of extracting useful information, so that decision-making, actions executing, events detecting ...
    • Improving drilling hydraulics estimations ‑ a case study 

      Ashena, Rahman; Hekmatinia, Abdol-Azim; Galambor, Ali; Aadnøy, Bernt Sigve; Enget, Charissa; Rasouli, Vamegh (Peer reviewed; Journal article, 2021-06)
      Accurate pressure drop estimation is important for drill string and bit nozzles design and optimized fluid circulations as well as identifying the drilling problems such as bit nozzle(s) washout or plugging. In this study, ...
    • Optimizing the separation factor along a directional well trajectory to minimize collision risk 

      Khosravanian, Rasool; Mansouri, Vahid; Wood, David A.; Aadnøy, Bernt Sigve (Peer reviewed; Journal article, 2020-04)
      Optimizing the trajectory of directional wellbores is essential to minimize drilling costs and the impacts of potential drilling problems. It poses multi-objective optimization challenges. Well-design optimization models ...
    • Review and investigations on geothermal energy extraction from abandoned petroleum wells 

      Sui, Dan; Wiktorski, Ekaterina; Røksland, Marius; Basmoen, Tommy A. (Journal article; Peer reviewed, 2018-08)
      Geothermal energy is a sustainable and renewable energy source, which can be used in electricity production, space heating/cooling, and other industrial applications. In the recent years, it has been gathering more and ...
    • A solution for funding the development of technology in oilwell drilling 

      Amorim Jr., Dalmo S.; Santos, Otto L. A.; Azevedo, Ricardo C.; Chieregati, Ana Carolina; Hølland, Kari (Peer reviewed; Journal article, 2020-11)
      This article proposes a novel methodology to solve an existing gap in benchmark definition by the adoption of statistically defined benchmarks as references to test products or technical procedures. In a win–win partnership, ...
    • Study on separation factor models for well anti-collision analysis 

      Madeira, Rafael; Sui, Dan (Peer reviewed; Journal article, 2021-07)
      Anti-collision analysis has been becoming even more important in the past few years with the increasing amount of wells drilled in highly congested fields. The separation factor (SF) is a critical safety parameter to avoid ...