• An Evaluation of Liner Deformation in the Valhall Field 

      Klepaker, Kristian Tande (Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06-15)
      Valhall is one of the giant, high porosity chalk reservoir in the southern part of the Norwegian Continental Shelf. The field has been in production since 1982 with pressure depletion and reservoir compaction as main drive ...
    • Drilling Optimisation on the Norwegian Continental Shelf: Opportunities in Well Design Practice 

      Harris, Patrick James (Master thesis, 2018-04-17)
      The purpose of this thesis was to attempt to provide evidence that Norway’s drilling fraternity is long overdue for a re-think in the way it drills wells. In so doing, the author has chosen to focus on slim well drilling ...
    • Dynamic Acceptance Criteria for Periodic Testing of Downhole Safety Valves 

      Aas, Beate (Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-06-15)
      Downhole Safety Valves (DHSVs) are periodically leak tested as part of the preventative maintenance program on an oil and gas producing facility. The last couple of years, the oil and gas industry on the Norwegian Continental ...
    • Evaluation of Casing Exit Setting Depth Criteria for Whipstock 

      Haarberg, Sindre (Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06)
      Baker Hughes GE has conducted several hundred whipstock operations over the last years on the NCS with a high success rate. This work will go into detail on some of the operations that were less successful, particularly ...
    • Experimental study on thermal effects on well components 

      Olafsson, Lilja Fure (Masteroppgave/UIS-TN-IEP/2018;, Master thesis, 2018-06)
      The main objective of inflow control devices is to maintain a uniform inflow by providing an additional pressure loss between the formation and the wellbore. ICDs delay the production of water or gas, and thus increase the ...
    • Integrity Monitoring Methods for Producing and Plugged Wells 

      Berge, Unni Marina (Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-07)
      More challenging wells in sensitive areas require appropriate integrity monitoring to address the safety and environmental concerns. The purpose of this thesis was to gain an overview of the current status of well integrity ...
    • Modern Casing Design Optimization 

      Aarnes, Christian (Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-15)
      “Working Stress Design” is the most used casing design method and has been for many years, on the Norwegian continental shelf as well as all over the globe. It is a simple method which in essence comprises of calculating ...
    • 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 ...
    • Potential of evaporation for geothermal energy exploitation 

      Lysen, Christian (Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06-13)
      This master thesis investigates the potential of using heat pipes as geothermal heating systems for domestic purposes. The total electric energy consumption in Norway used for heating purposes is estimated to be as much ...
    • Rate of penetration optimization using moving horizon estimation 

      Sui, Dan; Aadnøy, Bernt Sigve (Journal article; Peer reviewed, 2016)
      Increase of drilling safety and reduction of drilling operation costs, especially improvement of drilling efficiency, are two important considerations in the oil and gas industry. The rate of penetration (ROP, alternatively ...
    • Selection of Long or Short Production Casing on HPHT Wells 

      Sævareid, Monika (Masteroppgave/UIS-TN-IPT/2017;, Master thesis, 2017-06)
      Drilling in high-pressure high-temperature (HPHT) wells present many economical, technical and operational challenges. The wells are usually located in deep water¬¬¬––where the total well cost and trip times are increased. ...
    • Well Design With an Environmental Focus 

      Karlsen, Denise (Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-08)
      The decisions made during well planning have mainly been focused on safety, cost efficiency and applicability of the design. As the climate have been getting more attention the past years, environment is now high up on the ...
    • Wellbore Collapse Failure Criteria and Drilling Optimization 

      Tranggono, Hadi (Masteroppgave/UIS-TN-IEP/2019;, Master thesis, 2019-06-15)
      Design and planning in drilling a well are a key for successful before to execute drilling operation. A good understanding of wellbore stability, design mud, casing, cementing, BHA & drillstring, drilling bit, hole cleaning ...