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  • Sluttrapportering Registreringsarbeid under prosjektet «Ryddeaksjon Jærkysten» 2018–2020 

    Haave, Marte; Bastesen, Eivind (Research report, 2021)
    Undersøkelsen har benyttet innsamling og registrering av avfall ved tre skoler på tre definerte lokaliteter i 2018–2020, samt data fra ryddelogg med mengder strandavfall mottatt av Jæren friluftsråd i perioden 2015–2020. ...
  • Fast robust optimization using bias correction applied to the mean model 

    Wang, Lingya; Oliver, Dean (Peer reviewed; Journal article, 2020)
    Ensemble methods are remarkably powerful for quantifying geological uncertainty. However, the use of the ensemble of reservoir models for robust optimization (RO) can be computationally demanding. The straightforward ...
  • Impact of time-dependent wettability alteration on the dynamics of capillary pressure 

    Kassa, Abay; Gasda, Sarah; Kumar, Kundan; Radu, Florin Adrian (Peer reviewed; Journal article, 2020)
    Wettability is a pore-scale property that has an important impact on capillarity, residual trapping, and hysteresis in porous media systems. In many applications, the wettability of the rock surface is assumed to be constant ...
  • Geocellular rendering of cave surveys in paleokarst reservoir models 

    Lønøy, Bjarte; Tveranger, Jan; Pennos, Christos; Whitaker, Fiona; Lauritzen, Stein-Erik (Peer reviewed; Journal article, 2020)
    Infilled and collapsed cave systems are an important component of many paleokarst reservoirs. Incorporating these features into industrial reservoir models commonly relies on geostatistical modelling methods that often ...
  • Utvikling av kartleggingsmetoder og estimat for oppryddingskostnader for makroplast i strandsonen 

    Bastesen, Eivind; Haave, Marte; Neby, Simon (Research report, 2020)
    For kystkommunene Sund, Fjell og Øygarden er håndtering av marint avfall et vedvarende problem som vil medføre store kostnader i årene som kommer. I dette prosjektet har vi utarbeidet kart over områder med kystnære ...
  • Utarbeidelse av plan for rydding av marint plastavfall på ytre kyst av Vestland Fylke 

    Bastesen, Eivind (Research report, 2020)
    Denne rapporten inneholder en utarbeidelse av plan for basisrydding ytre kyst Vestland. Dette innebærer en kartlegging av ulike aktører som kan ta oppdraget med å rydde 40% av ytre kyst Vestland fylke. I rapporten forsøkes ...
  • From outcrop scanlines to discrete fracture networks, an integrative workflow 

    Lepillier, Baptiste; Bruna, Pierre-Olivier; Bruhn, David; Bastesen, Eivind; Daniilidis, Alexandros; Garcia, Óscar; Torabi, Anita; Wheeler, Walter H (Journal article; Peer reviewed, 2020)
    Understanding fractures and fracture networks is essential for the investigation and use of subsurface reservoirs. The aim is to predict the fractures and the fracture network when there is no direct access to subsurface ...
  • Practical approaches to study microbially induced calcite precipitation at the field scale 

    Marban, David Landa; Tveit, Svenn; Kumar, Kundan; Gasda, Sarah (Journal article; Peer reviewed, 2021)
    Microbially induced calcite precipitation (MICP) is a new and sustainable technology which utilizes biochemical processes to create barriers by calcium carbonate cementation; therefore, this technology has a potential to ...
  • Dynamic repositioning in floating wind farms 

    Saadallah, Nejm; Randeberg, Erlend (Research report, 2020)
    The potential for harvesting Norwegian offshore wind power resourcesis undoubtably tremendous, however, currently limited by the cost of energy especially at deep waters. A general challenge for wind power production is ...
  • Implicit linearization scheme for nonstandard two-phase flow in porous media 

    Kassa, Abay; Kumar, Kundan; Gasda, Sarah; Radu, Florin Adrian (Peer reviewed; Journal article, 2020)
    In this article, we consider a nonlocal (in time) two‐phase flow model. The nonlocality is introduced through the wettability alteration induced dynamic capillary pressure function. We present a monotone fixed‐point iterative ...
  • A locally conservative multiphase level set method for capillary-controlled displacements in porous media 

    Jettestuen, Espen; Friis, Helmer Andre`; Helland, Johan Olav (Peer reviewed; Journal article, 2021)
    We present a multiphase level set method with local volume conservation for capillary-controlled displacement in porous structures. Standard numerical formulations of the level set method for capillary-controlled (or, ...
  • Qualification of New Methods for Measuring In-Situ Rheology of Non-Newtonian Fluids in Porous Media 

    Jacobsen, Jørgen Gausdal; Shaker Shiran, Behruz; Skauge, Tormod; Sorbie, Ken; Skauge, Arne (Peer reviewed; Journal article, 2020)
    Pressure drop (ΔP) versus volumetric injection rate (Q) data from linear core floods have typically been used to measure in situ rheology of non-Newtonian fluids in porous media. However, linear flow is characterized by ...
  • Tidal amplification and along‐strike process variability in a mixed‐energy paralic system prograding onto a low accommodation shelf, Edgeøya, Svalbard 

    Anell, Ingrid Margareta; Zuchuat, Valentin; Röhnert, A.D.; Smyrak-Sikora, Aleksandra; Buckley, Simon John; Lord, Gareth Steven; Maher, H.; Midtkandal, Ivar; Ogata, Kei; Olaussen, Snorre; Osmundsen, Per Terje; Braathen, Alvar (Journal article; Peer reviewed, 2020)
    The study describes the depositional development and sediment partitioning in a prograding paralic Triassic succession. The deposits are associated with the advance of large prism‐scale clinoforms across a shallower platform ...
  • Improving hydropower inflow forecasts by assimilating snow data 

    Magnusson, Jan; Nævdal, Geir; Matt, Felix; Burkhart, John F; Winstral, Adam (Journal article; Peer reviewed, 2020)
    The study describes the depositional development and sediment partitioning in a prograding paralic Triassic succession. The deposits are associated with the advance of large prism‐scale clinoforms across a shallower platform ...
  • Mathematical modeling, laboratory experiments, and sensitivity analysis of bioplug technology at Darcy scale 

    Marban, David Landa; Bødtker, Gunhild; Vik, Bartek Florczyk; Pettersson, Per; Pop, Iuliu Sorin; Kumar, Kundan; Radu, Adrian Florin (Peer reviewed; Journal article, 2020)
    In this paper we study a Darcy-scale mathematical model for biofilm formation in porous media. The pores in the core are divided into three phases: water, oil, and biofilm. The water and oil flow are modeled by a generalized ...
  • Carbon capture utilization and storage (CCUS) in tight gas and oil reservoirs 

    Andersen, Pål Østebø; Brattekås, Bergit; Zhou, Yingfang; Nadeau, Paul Henry; Nermoen, Anders; Yu, Zhixin; Fjelde, Ingebret; Oelkers, Eric H (Peer reviewed; Journal article, 2020)
  • The Open Porous Media Flow Reservoir Simulator 

    Rasmussen, Atgeirr Flø; Sandve, Tor Harald; Bao, Kai; Lauser, Andreas; Hove, Joakim; Skaflestad, Bård; Klöfkorn, Robert; Blatt, Markus; Rustad, Alf Birger; Sævareid, Ove; Lie, Knut-Andreas; Thune, Andreas (Peer reviewed; Journal article, 2020)
    The Open Porous Media (OPM) initiative is a community effort that encourages open innovation and reproducible research for simulation of porous media processes. OPM coordinates collaborative software development, maintains ...
  • Effects of permeability on CO2 dissolution and convection at reservoir temperature and pressure conditions: A visualization study 

    Amarasinghe, Widuramina Sameendranath; Fjelde, Ingebret; Guo, Ying; Rydland, Jan-Åge (Peer reviewed; Journal article, 2020)
    When CO2 is injected into aquifers, CO2 will dissolve into the water phase. CO2 dissolution initiated by diffusion, will increase the density of the water phase and thereby commence the convective flow of CO2. The objective ...
  • Extremum seeking for real-time optimal drilling control 

    Aarsnes, Ulf Jakob Flø; Aamo, Ole Morten; Krstic, Miroslav (Peer reviewed; Journal article, 2019)
    This paper demonstrate the feasibility and illustrates some challenges of applying extremum seeking control to online optimization of the drilling process. Specifically, we consider the problem of finding the hook-load ...
  • A laboratory scale approach to wettability restoration in chalk core samples 

    Sachdeva, Jaspreet Singh; Sripal, Edison A.; Nermoen, Anders; Korsnes, Reidar Inge; Madland, Merete Vadla; James, Lesley A. (Peer reviewed; Journal article, 2019)
    Wettability in chalk has been studied comprehensively to understand fluid flow mechanisms impacting coreflooding experiments. Wettability becomes paramount in understanding the parameters influencing chalk-fluid interactions. ...

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