Blar i Department of Physics and Technology på tittel

Viser treff 1420-1439 av 2104

    • Population-balance modeling of CO2 foam for CCUS using nanoparticles 

      Eide, Øyvind; Fernø, Martin; Bryant, Steven; Kovscek, Anthony R.; Gauteplass, Jarand (Journal article; Peer reviewed, 2020)
      Foam implementation for carbon capture, utilization and storage (CCUS) can greatly improve CO2 mobility control, resulting in enhanced hydrocarbon production and carbon storage capacity. The use of nanoparticles (NP) to ...

    • Pore- and Core-Scale Insights of Nanoparticle-Stabilized Foam for CO2-Enhanced Oil Recovery 

      Alcorn, Zachary Paul; Føyen, Tore Lyngås; Gauteplass, Jarand; Benali, Benyamine; Soyke, Aleksandra; Fernø, Martin (Journal article; Peer reviewed, 2020)
      Nanoparticles have gained attention for increasing the stability of surfactant-based foams during CO2 foam-enhanced oil recovery (EOR) and CO2 storage. However, the behavior and displacement mechanisms of hybrid ...

    • Pore-level foam generation and flow for mobility control in fractured systems 

      Gauteplass, Jarand; Chaudhary, Kuldeep; Kovscek, Anthony R.; Fernø, Martin A. (Journal article, 2015-03-05)
      Pore-level foam generation, propagation, and sweep efficiency were visualized using silicon-wafer micromodels with an accurate representation of sandstone pore structure, grain shapes and sizes based on thin-section analysis. ...

    • Pore-Level Interpretation of Methane Hydrate Growth and Dissociation with Deionized and Saline Water 

      Iden, Eirik Johan (Master thesis, 2017-06-22)
      Natural gas hydrates are solid crystalline compounds composed of water and gas molecules, located in vast amounts around the world, in subsurface permafrost and oceanic environments. With an increasing demand of energy ...

    • Pore-level Ostwald ripening of CO2 foams at reservoir pressure 

      Benali, Benyamine; Sæle, Aleksandra Magdalena; Liu, Na; Fernø, Martin; Alcorn, Zachary Paul (Journal article; Peer reviewed, 2023)
      The success of foam to reduce CO2 mobility in CO2 enhanced oil recovery and CO2 storage operations depends on foam stability in the reservoir. Foams are thermodynamically unstable, and factors such as surfactant adsorption, ...

    • Pore-scale bubble population dynamics of CO2-foam at reservoir pressure 

      Benali, Benyamine; Føyen, Tore Lyngås; Alcorn, Zachary Paul; Haugen, Malin; Gauteplass, Jarand; Kovscek, Anthony R.; Fernø, Martin (Journal article; Peer reviewed, 2022)
      The flow of CO2 foam for mobility control in porous media is dictated by the foam texture, or bubble density, which is commonly expressed as the number of bubbles per unit of flowing gas. In most high-pressure laboratory ...

    • Pore-scale dynamics for underground porous media hydrogen storage 

      Lysyy, Maksim; Ersland, Geir; Fernø, Martin (Journal article; Peer reviewed, 2022)
      Underground hydrogen storage (UHS) has been launched as a catalyst to the low-carbon energy transitions. The limited understanding of the subsurface processes is a major obstacle for rapid and widespread UHS implementation. ...

    • Pore-scale investigation of methane hydrate phase transitions and growth rates in synthetic porous media 

      Lysyy, Maksim (Master thesis, 2018-06-20)
      A growing demand for energy and natural gas in particular, makes methane gas hydrates a potential target to supplement natural gas production from conventional resources. Several pilot projects have proven the feasibility ...

    • Pore-scale kinetics of calcium dissolution and secondary precipitation during geological carbon storage 

      Liu, Na; Haugen, Malin; Benali, Benyamine; Landa-Marbán, David; Fernø, Martin (Journal article; Peer reviewed, 2023)
      Geological carbon storage (GCS) in deep underground formations presents a significant opportunity to mitigate anthropogenic emissions of carbon dioxide in the context of climate change. The injected carbon dioxide may ...

    • Pore-scale spatiotemporal dynamics of microbial-induced calcium carbonate growth and distribution in porous media 

      Liu, Na; Haugen, Malin; Benali, Benyamine; Landa-Marbán, David; Fernø, Martin (Journal article; Peer reviewed, 2023)
      The naturally occurring bio-geochemical microbial-induced calcium carbonate precipitation (MICP) process is an eco-friendly technology for rehabilitating construction materials, reinforcement of soils and sand, heavy metals ...

    • Pore-scale study of microbial hydrogen consumption and wettability alteration during underground hydrogen storage 

      Liu, Na; Kovscek, Anthony R.; Fernø, Martin Anders; Dopffel, Nicole (Journal article; Peer reviewed, 2023)
      Hydrogen can be a renewable energy carrier and is suggested to store renewable energy and mitigate carbon dioxide emissions. Subsurface storage of hydrogen in salt caverns, deep saline formations, and depleted oil/gas ...

    • Pore-to-Core Laboratory Upscaling and Visualization of Enhanced Oil Recovery and CO2 Storage 

      Gauteplass, Jarand (Doctoral thesis, 2015-01-09)
      The global energy demand increases, and the need for hydrocarbon reserve growth is evident. The maturation of hydrocarbon formations worldwide combined with declining rate of major oil and gas discoveries, have caused a ...

    • Positron bunching and electrostatic transport system for the production and emission of dense positronium clouds into vacuum 

      Aghion, Stefano; Amsler, C; Ariga, A; Ariga, T; Belov, AS; Bonomi, G; Bräunig, P; Bremer, J; Brusa, RS; Cabaret, L; Caccia, M; Caravita, R; Castelli, F; Cerchiari, G; Chlouba, K; Cialdi, S; Comparat, D; Consolati, G; Demetrio, A; Di Noto, L; Doser, M; Dudarev, A; Ereditato, A; Evans, C; Fesel, J; Fontana, A; Forslund, OK; Gerber, S; Giammarchi, M; Gligorova, Angela; Gninenko, S; Guatieri, F; Haider, S; Holmestad, Helga Margrete; Huse, Torkjell; Jernelv, IL; Jordan, E; Kaltenbacher, T; Kellerbauer, A; Kimura, M; Koetting, T; Krasnicky, D; Lagomarsino, V; Lebrun, P; Lansonneur, P; Lehner, S; Liberadzka, J; Malbrunot, C; Mariazzi, S; Marx, L; Matveev, V; Mazzotta, Z; Nebbia, G; Nedelec, P; Oberthaler, M; Pacifico, Nicola; Pagano, D; Penasa, L; Petracek, V; Pistillo, C; Prelz, F; Prevedelli, M; Ravelli, L; Rienäcker, B; Røhne, Ole Myren; Rosenberger, S; Rotondi, A; Sacerdoti, M; Sandaker, Heidi; Santoro, R; Scampoli, P; Sorrentino, F; Spacek, M; Storey, J; Strojek, IM; Testera, G; Tietje, I; Vamosi, S; Widmann, E; Yzombard, P; Zavatarelli, S; Zmeskal, J (Peer reviewed; Journal article, 2015-11)
      We describe a system designed to re-bunch positron pulses delivered by an accumulator supplied by a positron source and a Surko-trap. Positron pulses from the accumulator are magnetically guided in a 0.085 T field and are ...

    • Possibilities, limitations, and the way ahead for dust explosion modelling 

      Skjold, Trygve; Larsen, Ø.; Hansen, Olav R. (Journal article; Peer reviewed, 2006)
      The purpose of the present paper is threefold. First, a brief review of modelling, main results, and preliminary conclusions from the DESC project are presented; current capabilities and limitations of the DESC code are ...

    • Possibility of Measuring the CP of a Higgs Boson at the LHC 

      Myklevoll, Kari Ertresvåg (Master thesis, 2002)

    • Possible Ionospheric Influence on Substorm Onset Location 

      Elhawary, Reham Zakaria Ahmed Mohamed; Laundal, Karl Magnus; Reistad, Jone Peter; Hatch, Spencer Mark (Journal article; Peer reviewed, 2022)
      Auroral substorm onset locations are highly unpredictable. Previous studies have shown that the By component of the interplanetary magnetic field (IMF) explains ∼5% of the variation in onset magnetic local time (MLT), while ...

    • Power budget equations and calibration factors for fish abundance estimation using scientific echo sounders and sonar systems 

      Lunde, Per; Korneliussen, Rolf (Peer reviewed; Journal article, 2016-07-09)
      Acoustic methods used in fish abundance estimation constitute a key part of the analytic assessment that makes the basis for abundance estimation of marine resources. The methods rely on power-budget equations and calibrated ...

    • Precise description of medium-induced emissions 

      Isaksen, Johannes Hamre; Tywoniuk, Konrad (Journal article; Peer reviewed, 2023)
      We study jet fragmentation via final-state parton splittings in the medium. These processes are usually calculated theoretically by invoking the large-Nc limit. In this paper we perform the first computation of a 1 → 2 ...

    • Prediction of Soft Proton Intensities in the Near-Earth Space Using Machine Learning 

      Kronberg, Elena A.; Hannan, Tanveer; Huthmacher, Jens; Münzer, Marcus; Peste, Florian; Zhou, Ziyang; Berrendorf, Max; Faerman, Evgeniy; Gastaldello, Fabio; Ghizzardi, Simona; Escoubet, Philippe; Haaland, Stein; Smirnov, Artem; Sivadas, Nithin; Allen, Robert C.; Tiengo, Andrea; Ilie, Raluca (Journal article; Peer reviewed, 2021)
      The spatial distribution of energetic protons contributes to the understanding of magnetospheric dynamics. Based upon 17 yr of the Cluster/RAPID observations, we have derived machine-learning-based models to predict the ...

    • Prediction of Three-Phase Capillary Pressure using a Network Model Anchored to Two-Phase Data 

      Dale, Elisabeth Iren; Dijke, Marinus I. J. van; Skauge, Arne (Journal article, 2008-04-30)
      Three-phase capillary pressure is difficult to measure experimentally and therefore has to be estimated by other methods. In this work a network model was applied to generate a consistent set of two-phase and three-phase ...