• Digital Monitoring of Co2 Storage Projects (Digimon) 

      Nøttvedt, Arvid; Midttømme, Kirsti; Lien, Martha; Puts, Hanneke; Stork, Anne (Journal article, 2021)
      With an overall objective to “accelerate the implementation of CCS by developing and demonstrating an affordable, flexible, societally embedded and smart Digital Monitoring early-warning system”, the DigiMon project aims ...
    • DigiTrans kortrapport: Studentenes opplevelse av studiesituasjonen under nedstengingene av UiB høsten 2020 

      Egelandsdal, Kjetil; Hansen, Cecilie Johanne Slokvik (Research report, 2021)
      Universitetet i Bergen (UiB) måtte høsten 2020 igjen stenge tilgangen til «campus» for sine studenter for å hindre spredningen av koronaviruset på grunn av den pågående pandemisituasjonen. For de fleste studentene ble ...
    • Dimensional reduction of a fractured medium for a polymer EOR model 

      Dugstad, Martin Sandanger; Kumar, Kundan; Pettersen, Øystein (Peer reviewed; Journal article, 2021)
      Dimensional reduction strategy is an effective approach to derive reliable conceptual models to describe flow in fractured porous media. The fracture aperture is several orders of magnitude smaller than the characteristic ...
    • Direct Multi-Modal Inversion of Geophysical Logs Using Deep Learning 

      Alyaev, Sergey; Elsheikh, Ahmed (Peer reviewed; Journal article, 2022)
      Geosteering of wells requires fast interpretation of geophysical logs which is a non-unique inverse problem. Current work presents a proof-of-concept approach to multi-modal probabilistic inversion of logs using a single ...
    • A Discrete-Domain Approach to Three-Phase Hysteresis in Porous Media 

      Helland, Johan Olav; Jettestuen, Espen; Friis, Helmer Andre` (Peer reviewed; Journal article, 2021)
      We present a discrete-domain approach to three-phase displacements and hysteresis in porous media. In this method, constrained energy minimization leads to evolution equations for local saturations that describe a wide ...
    • Drilling Data Hub 

      Daireaux, Benoit; Saadallah, Nejm (Research report, 2020)
      Deploying advanced automation solutions on a large scale is a current challenge. Experience shows that a considerable amount of work must be performed before every single use of those solutions: we refer here to the necessity ...
    • Dynamic estimates of extreme-case CO2 storage capacity for basin-scale heterogeneous systems under geological uncertainty 

      Pettersson, Per; Tveit, Svenn; Gasda, Sarah Eileen (Peer reviewed; Journal article, 2022)
      Geological CO2 storage is expected to grow dramatically in the coming decades to meet global climate targets. Assessment of worldwide storage resources using static methods indicates significant theoretical potential for ...
    • Dynamic PVT model for CO2-EOR black-oil simulations 

      Sandve, Tor Harald; Sævareid, Ove; Aavatsmark, Ivar (Peer reviewed; Journal article, 2022)
      A well-planned CO2EOR operation can help meet an ever-increasing need for energy and at the same time reduce the total CO2 footprint from the energy production. Good simulation studies are crucial for investment decisions ...
    • 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 ...
    • Economic Evaluation of Eight Regional Scenarios for the Deployment of Carbon Capture, Use and Storage in Southern and Eastern Europe to 2050 

      Coussy, Paula; Guichet, Xavier; Nermoen, Anders; Dumas, Cecile; Canteli, Paula; Orio, Roberto Martínez; Fortes, Patricia; Mesquita, Paulo H. C; Pereira, Pedro A.B.; Carneiro, Julio; Rocha, Paulo; Augiar, Ricardo; Tyrologou, Pavlos; Koukouzas, Nikolaos; Gravaud, Isaline; Veloso, Fernanda M. L.; Dudu, Alexandra Constanta; Sava, Constantin Stefan; Vulin, Domagoj; Jukic, Lucija; Sliwinska, Anna; Krawczyk, Piotr (Lecture, 2022)
      During the three-year EU-funded STRATEGY CCUS project [1] [3] (2019-2022), Carbon Capture, Use and Storage (CCUS) scenarios formulated for eight regions in Southern and Eastern Europe were developed and economically evaluated ...
    • Effect of buoyancy and inertia on viscoplastic fluid-fluid displacements in a regular and an irregular eccentric annulus 

      Skadsem, Hans Joakim; Kragset, Steinar (Peer reviewed; Journal article, 2020)
      Casing strings and liners are important subsurface structural components in petroleum and in geothermal wells. After the casing string has been run in hole, it is cemented to the formation by pumping a sequence of spacer ...
    • Effective permeability of deformation bands in fault damage zones – Can deformation bands reduce the risk of fault leakage? 

      Berge, Runar Lie; Gasda, Sarah Eileen; Keilegavlen, Eirik; Sandve, Tor Harald (Chapter; Peer reviewed; Conference object, 2021)
      Faults are major geological structures that can dominate the flow paths in subsurface reservoirs by, e.g., connecting otherwise unconnected layers. In CO2 storage sites where the faults act as the main structural trap, the ...
    • Effects of confinement pressure on the mechanical behavior of an oil well cement paste 

      Lima, Victor Nogueira; Silva, Flávio de Andrade; Skadsem, Hans Joakim; Beltrán-Jiménez, Katherine; Sunde, Jonas Kristoffer (Peer reviewed; Journal article, 2021)
      Oil well cement paste is a key structural component in wells that should provide mechanical support to the casing and prevent uncontrolled flow of formation fluids along the wellbore and to the environment. Since the annular ...
    • 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 ...
    • Efficient Solvers for Nonstandard Models for Flow and Transport in Unsaturated Porous Media 

      Illiano, Davide; Both, Jakub Wiktor; Pop, Iuliu Sorin; Radu, Florin Adrian (Peer reviewed; Journal article, 2022)
      We study several iterative methods for fully coupled flow and reactive transport in porous media. The resulting mathematical model is a coupled, nonlinear evolution system. The flow model component builds on the Richards ...
    • Electrical conditions in 3-phase submerged arc furnaces: learning from the ElMet project 

      Halvorsen, Svenn Anton; Sparta, Manuel; Risinggård, Vetle Kjær; Fromreide, Mads (Journal article, 2021)
      ElMet is the short name for a competence project (2015-2020) on electrical conditions in 3-phase submerged arc furnaces (SAFs). In the project, NORCE has cooperated closely with The Norwegian University of Science and ...
    • Electrification of Oil and Gas Platforms by Wind Energy 

      Saadallah, Nejm; Heggelund, Yngve (Peer reviewed; Journal article, 2023)
      In this paper, we address the problem of high greenhouse gas emissions from oil and gas platforms in Norway. We look at the potential of integrating an energy system composed of wind turbines and battery systems to unload ...
    • Ensemble-based constrained optimization using an exterior penalty method 

      Oguntola, Micheal Babatunde; Lorentzen, Rolf J. (Peer reviewed; Journal article, 2021)
      In science and engineering, non-linear constrained optimization has been a useful mathematical technique for many practical applications. Of interest to us is its applicability in the modeling and prediction of hydrocarbon ...
    • An ensemble-based decision workflow for reservoir management 

      Chang, Yuqing; Evensen, Geir (Peer reviewed; Journal article, 2022)
      It is challenging to make optimal field development and reservoir management decisions with diminishing resources and low-emission requirements. For an optimal exploitation of the reservoir fluids, it is necessary to ...
    • Ensemble-Based Well-Log Interpretation and Uncertainty Quantification for Well Geosteering 

      Jahani, Nazanin; Ambia Garrido, Joaquin; Alyaev, Sergey; Fossum, Kristian; Suter, Erich Christian; Torres-Verdin, Carlos (Peer reviewed; Journal article, 2022)
      Hydrocarbon reservoirs are often located in spatially complex and uncertain geologic environments, where the associated costs of drilling wells for exploration and development are notoriously high. These costs may be reduced ...