Browsing Bergen Open Research Archive by Title
Now showing items 24322-24341 of 34093
-
Pore- and Core-Scale Insights of Nanoparticle-Stabilized Foam for CO2-Enhanced Oil Recovery
(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
(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
(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
(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
(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
(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
(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
(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 ... -
A pore-scale model for permeable biofilm: Numerical simulations and laboratory experiments
(Peer reviewed; Journal article, 2019)In this paper, we derive a pore-scale model for permeable biofilm formation in a two-dimensional pore. The pore is divided into two phases: water and biofilm. The biofilm is assumed to consist of four components: water, ... -
Pore-scale spatiotemporal dynamics of microbial-induced calcium carbonate growth and distribution in porous media
(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 studies of CO2-hydrate sealing mechanisms - effect of salinity
(Master thesis, 2023-08-03) -
Pore-scale study of microbial hydrogen consumption and wettability alteration during underground hydrogen storage
(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
(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 ... -
PorePy: an open-source software for simulation of multiphysics processes in fractured porous media
(Journal article; Peer reviewed, 2021)Development of models and dedicated numerical methods for dynamics in fractured rocks is an active research field, with research moving towards increasingly advanced process couplings and complex fracture networks. The ... -
PoroTwin: A Digital Twin for a FluidFlower Rig
(Journal article; Peer reviewed, 2023)We present a framework for integrated experiments and simulations of tracer transport in heterogeneous porous media using digital twin technology. The physical asset in our setup is a meter-scale FluidFlower rig. The digital ... -
Porphyria cutanea tarda and patterns of long-term sick leave and disability pension: a 24-year nationwide matched-cohort study
(Journal article; Peer reviewed, 2022)Background Porphyria cutanea tarda (PCT) is a skin disorder caused by a defect in the liver enzyme uroporphyrinogen decarboxylase and is associated with hepatitis C virus infection, high alcohol intake, smoking and iron ... -
Porphyria cutanea tarda increases risk of hepatocellular carcinoma and premature death: A nationwide cohort study
(Peer reviewed; Journal article, 2019-04-03)Background Porphyria cutanea tarda (PCT) is a skin disorder originating from a deficit of the liver enzyme uroporphyrinogen decarboxylase. PCT may be a risk factor for hepatocellular carcinoma (HCC) and other cancers, but ... -
"Porque no se hace pueblo sin ellas" Kvinnelig spansk utvandring fra Sevilla 1575 - 1577
(Master thesis, 1995) -
Porta Di Ercolano-Pompeii
(Master thesis, 2023-11-20)This master thesis started as an investigation on the City gate Porta Di Ercolano in Pompeii, and the street inside and outside of this city gate. City gates was an important part of the Roman Cities, and in a lot of cases ... -
Porta Romana og Porta di Ercolano Et komparativt studie af to byporte i Ostia og Pompeji, 1-150 e.Kr.
(Master thesis, 2019-07-04)I denne masteropgave følges udviklingen ved byportene Porta di Ercolano i Pompeji, og Porta Romana i Ostia, i perioden 1 til 150 e.Kr. Det er særligt sammenspillet mellem byportene og de tilstødende områder, der er i fokus, ...