Blar i NTNU Open på forfatter "Foss, Bjarne Anton"

Viser treff 61-71 av 71

    • Real-Time Optimization under Uncertainty Applied to a Gas Lifted Well Network 

      Krishnamoorthy, Dinesh; Foss, Bjarne Anton; Skogestad, Sigurd (Journal article; Peer reviewed, 2016)
      In this work, we consider the problem of daily production optimization in the upstream oil and gas domain. The objective is to find the optimal decision variables that utilize the production systems efficiently and maximize ...

    • Reservoir Management under Uncertainty 

      Midttun, Lars Skjærpe (Master thesis, 2015)
      Uncertainty poses a major concern in reservoir management. To maximize production, engineers and geoscientists use numerical models of the reservoir to simulate the production process in advance, and mathematical optimization ...

    • Shale-gas wells as virtual storage for supporting intermittent renewables 

      Knudsen, Brage Rugstad; Foss, Bjarne Anton (Journal article; Peer reviewed, 2016)
      Mature shale-gas wells possess a property that enables cyclic production and shut-in without incurring revenue losses. Based on this property, we suggest that fields with mature shale-gas wells may act as virtual gas storage ...

    • Simultaneous Methods for the Optimization of Water Flooding in Reservoir Engineering Applications 

      Heirung, Tor Aksel Notland (Master thesis, 2010)
      In this work, a model has been derived derived and carefully formulated to best fit within the framework of direct transcription. A smooth approximation to the upstream weighting is proposed, and shown to work very well. ...

    • Solving a Network Flow Decision Problem with Sampled Nonlinearities 

      Sandnes, Anders Thoresen (Master thesis, 2013)
      The tensor product B-spline is applied in global solution of approximated mixed integer nonlinear programs, exploiting the special structure of the B-spline to create convex relaxations in a Branch-and-Bound framework. The ...

    • Solving Adaptive Optimal Control Problems with Dynamic Programming 

      Fuglstad, Hilde (Master thesis, 2017)
      In optimal control of uncertain systems, lack of crucial information about the system can lead to unacceptable performance like the violation of constraints. In these, or similar situations where it is important to reduce ...

    • Spline Fluid Models for Optimization 

      Jahanshahi, Esmaeil; Grimstad, Bjarne André; Foss, Bjarne Anton (Journal article; Peer reviewed, 2016)

    • Steady-State Real-time Optimization using Transient Measurements 

      Krishnamoorthy, Dinesh; Foss, Bjarne Anton; Skogestad, Sigurd (Journal article; Peer reviewed, 2018)
      Real-time optimization (RTO) is an established technology, where the process economics are optimized using rigourous steady-state models. However, a fundamental limiting factor of current static RTO implementation is the ...

    • Stochastic dynamic optimization of an LNG-production plant 

      Lorentzen, Helle (Master thesis, 2008)
      This report opens with a presentation of the Snøhvit project and continues with a description of earlier work. A simplified nonlinear model from well to export ship of LNG production for Snøhvit is made in (Dahl 2007). The ...

    • Well Models for Production Optimization 

      Arianson, Marte (Master thesis, 2008)
      In coupled reservoir simulations a model of a reservoir and the production system are joined together to obtain realistic responses. One way of performing production optimization is to make use of a gas oil ratio (GOR) ...

    • Well placement optimization subject to realistic fielddevelopment constraints 

      Jesmani, Mansoureh; Bellout, Mathias; Hanea, Remus Gabriel; Foss, Bjarne Anton (Journal article; Peer reviewed, 2016)