Blar i NTNU Open på forfatter "Bakker, Steffen J."
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An optimization model for the planning of offshore plug and abandonment campaigns
Bakker, Steffen J.; Vrålstad, Torbjørn; Tomasgard, Asgeir (Journal article; Peer reviewed, 2019)Plug and abandonment (P&A) operations can be time-consuming and thus very costly, especially for subsea fields. P&A of subsea wells require dedicated vessels such as high cost semi-submersible drilling rigs or lower cost ... -
A column generation heuristic for the dynamic bicycle rebalancing problem
Gleditsch, Marte; Kristine, Hagen; Bakker, Steffen J.; Andersson, Henrik; Fagerholt, Kjetil (Peer reviewed; Journal article, 2022)Public bicycle sharing systems are becoming an essential part of the future urban mobility system. Real-time monitoring of the system state through sensors on bicycles and/or stations gives possibilities for advanced ... -
Development of a Norwegian open-source plug-and-abandonment database with applications
Myrseth, Velaug; Valdes, Gerardo Alfredo Perez; Bakker, Steffen J.; Midthun, Kjetil Trovik; Torsæter, Malin (Journal article; Peer reviewed, 2017)An estimated 3,000 oil wells need to be plugged and abandoned on the Norwegian Continental Shelf (NCS), with approximately 150 new wells being drilled each year. The petroleum industry estimates the total plugging costs ... -
Mature offshore oil field development: Solving a real options problem using stochastic dual dynamic integer programming
Bakker, Steffen J.; Kleiven, Andreas; Fleten, Stein-Erik; Tomasgard, Asgeir (Peer reviewed; Journal article, 2021)Oil and gas companies are facing low output prices and are forced to focus on the development of mature fields. Relevant investment decisions for operators include lifetime-enhancing activities, such as drilling new wells ... -
Modelling and analysis of offshore energy hubs
Zhang, Hongyu; Tomasgard, Asgeir; Knudsen, Brage Rugstad; Svendsen, Harald Georg; Bakker, Steffen J.; Grossmann, Ignacio E. (Peer reviewed; Journal article, 2022)Clean offshore energy hubs may become pivotal for efficient offshore wind power generation and distribution. In addition, offshore energy hubs may provide decarbonised energy supply for maritime transport, oil and gas ... -
Modelling electric and heat load profiles of non-residential buildings for use in long-term aggregate load forecasts
Lindberg, Karen Byskov; Bakker, Steffen J.; Sartori, Igor (Journal article; Peer reviewed, 2019)Long-term forecasts of the aggregate electric load profile are crucial for grid investment decisions and energy system planning. With current developments in energy efficiency of new and renovated buildings, and the coupling ... -
Planning of an Offshore Well Plugging Campaign: A Vehicle Routing Approach
Bakker, Steffen J.; Aarlott, Mats Mathisen; Tomasgard, Asgeir; Midthun, Kjetil Trovik (Journal article; Peer reviewed, 2017)When a petroleum well no longer serves its purpose, the operator is required to plug and abandon (P&A) the well to avoid contamination of reservoir fluids. An increasing number of offshore wells needs to be P&A’d in the ... -
Stochastic Network Design Modelling for Decarbonization of the Norwegian Freight Transportation System
Brynildsen, Ingvild Synnøve; Sandvig, Anette; Siqveland, Marit (Master thesis, 2022)I denne masteroppgaven presenterer vi en model for dekarbonisering av det norske godstransportnettverket over tid. Problemet innebærer å allokere flyt av varer mellom norske fylker og utenlandske soner til ulike transportformer ... -
Vehicle routing with endogenous learning: Application to offshore plug and abandonment campaign planning
Bakker, Steffen J.; Wang, Akang; Gounaris, Chrysanthos (Peer reviewed; Journal article, 2020)When a particular service is performed many times, the duration of the service might reduce due to the effect of learning from similar tasks that have been performed before. In this article, we present an approach to account ...