• A novel model-based scheme for kick and loss mitigation during drilling 

      Hauge, Espen; Aamo, Ole Morten; Godhavn, John-Morten; Nygaard, Olav Gerhard Haukenes (Journal article; Peer reviewed, 2013)
      A model-based in-/out-flux detection scheme for managed pressure drilling is presented. We apply a globally exponentially stable adaptive observer which estimates the unknown states and parameters of the hydraulic system ...
    • Disturbance Rejection by Feedback Control in Offshore Drilling: Experimental Results 

      Albert, Anders; Aamo, Ole Morten; Godhavn, John-Morten; Pavlov, Alexey (Journal article; Peer reviewed, 2014)
      As oil exploration and development costs rise, the oil industry increases its efforts to improve oil recovery (IOR) from existing fields. IOR is achieved mainly by drilling more wells, but drilling in partially depleted ...
    • Verification of downhole choke technology in a simulator using data from a North Sea well 

      Kvernland, Martin Krister; Gorski, Dmitri; Sant'Ana, Mateus; Godhavn, John-Morten; Aamo, Ole Morten; Sangesland, Sigbjørn (Journal article; Peer reviewed, 2019)
      The most important contributer to Improved Oil Recovery (IOR) on mature fields is drilling of infill wells. Managed Pressure Drilling (MPD) and Continuous Circulation System (CCS) techniques can be used for improved control ...