Blar i UiS Brage på forfatter "Aadnøy, Bernt Sigve"
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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 ... -
Real-Time Minimization of Mechanical Specific Energy with Multivariable Extremum Seeking
Nystad, Magnus; Aadnøy, Bernt Sigve; Pavlov, Alexey (Peer reviewed; Journal article, 2021)Drilling more efficiently and with less non-productive time (NPT) is one of the key enablers to reduce field development costs. In this work, we investigate the application of a data-driven optimization method called ... -
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. ... -
Selection of Optimal Well Trajectory Using Multi-Objective Genetic Algorithm and TOPSIS Method
Yavari, Hossein; Qajar, Jafar; Aadnøy, Bernt Sigve; Khosravanian, Rasool (Peer reviewed; Journal article, 2023)This study presents a novel approach for optimizing well paths in extended reach drilling (ERD) wells. Different trajectories can be used for ERD wells, each with its pros and cons. Previous research overlooked certain ... -
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 ...