• Analytical modeling of sub-surface porous reservoir compaction 

      Jelmert, Tom Aage; Toverud, Tommy (Journal article; Peer reviewed, 2018)
      Fluid extraction has led to compaction, land subsidence, flooding and even earthquakes many places around the world. Although rare, the environmental costs could be overwhelming. Once compaction has been identified, possible ...
    • Behavior of compacting reservoirs with restricted entry wells 

      Jelmert, Tom Aage (Journal article; Peer reviewed, 2019)
      We investigate the simultaneous effect of changes in thickness, permeability and porosity. These depend on changes in fluid pressure. Fluid withdrawal in stress-sensitive reservoirs may have serious environmental, technical ...
    • Decision support method for early-phase design of offshore hydrocarbon fields using model-based optimization 

      Gonzalez Rengifo, Diana Carolina; Stanko, Milan; Hoffmann, Arnaud (Journal article; Peer reviewed, 2019)
      This paper presents the development of a method to provide decision support in the feasibility studies and concept planning phases of oil and gas field development. The objective in developing the methodology was to provide ...
    • Evaluation of surfactant flooding using interwell tracer analysis 

      Khaledialidusti, Rasoul; Kleppe, Jon; Enayatpour, Saeid (Journal article; Peer reviewed, 2017)
      Surfactant flooding is an important enhanced oil recovery (EOR) method, especially in carbonate oil reservoirs where water flooding may not have an effect on oil recovery as much as for sandstone reservoirs. This is because ...
    • Million node fracture: size matters? 

      Lavrov, Alexandre (Peer reviewed; Journal article, 2021)
      Transmissivity of self-affine fractures was computed numerically as a function of the grid size. One-million-node fractures (1024 × 1024 nodes) with fractal dimensions of 2.2–2.6 were cut into successively smaller fractures ...
    • Optimized production profile using a coupled reservoir‑network model 

      Hoffmann, Arnaud; Stanko, Milan; Gonzalez, Diana (Journal article; Peer reviewed, 2019)
      This paper presents an integrated approach for scheduling and forecasting oil and gas production by integrating models of the entire value chain, from the reservoirs to the sales points. The methodology ensures maximum oil ...
    • Performance evaluation of a multi‑branch gas–liquid pipe separator using computational fluid dynamics 

      Refsnes, Helene Sund; Diaz, Mariana J.C.; Stanko, Milan (Journal article; Peer reviewed, 2019)
      The present paper aims to evaluate the performance of a multi-branch gas–liquid pipe separator by means of 3D computational fluid dynamics. This type of separator is attractive for deepwater subsea hydrocarbon fields due ...
    • Petrophysical interpretation in shaly sand formation of a gas field in Tanzania 

      Mkinga, Oras Joseph; Skogen, Erik; Kleppe, Jon (Journal article; Peer reviewed, 2019)
      An onshore gas field (hereafter called the R field—real name not revealed) is in the southeast coast of Tanzania which includes a Tertiary aged shaly sand formation (sand–shale sequences). The formation was penetrated by ...
    • Simulation study of surfactant injection in a fractured core 

      Cheng, Xiaoqian; Kleppe, Jon; Torsæter, Ole (Journal article; Peer reviewed, 2019)
      Surfactant flooding could be used to improve water flooding in fractured reservoirs due to the main mechanisms of wettability alteration and interfacial tension reduction. However, the surfactant flooding in fractured ...
    • Using combinatorics to compute fluid routing alternatives in a hydrocarbon production network 

      Stanko, Milan; Venstad, Jon Marius (Journal article; Peer reviewed, 2017)
      Typically, hydrocarbon production networks have several fluid routing alternatives that are applied by opening and closing on–off valves. This usually sends the wells’ fluids through a specific pipeline, pump or compressor, ...