Department of Energy Resources (TN-IER): Recent submissions
Now showing items 1-20 of 283
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In Silico Evaluation of a Self-powered Venous Ejector Pump for Fontan Patients
(Peer reviewed; Journal article, 2023)Purpose The Fontan circulation carries a dismal prognosis in the long term due to its peculiar physiology and lack of a subpulmonic ventricle. Although it is multifactorial, elevated IVC pressure is accepted to be the ... -
IORSim: A Mathematical Workflow for Field‑Scale Geochemistry Simulations in Porous Media
(Peer reviewed; Journal article, 2024-06)Reservoir modeling consists of two key components: the reproduction of the historical performance and the prediction of the future reservoir performance. Industry-standard reservoir simulators must run fast on enormous and ... -
Maximum column height and optimum storage depth for geological storage of hydrogen
(Peer reviewed; Journal article, 2023-12)We formulated the maximum hydrogen column height that avoids capillary breakthrough into the caprock above saline aquifers and depleted gas reservoirs. The effects of potential cushion gases such as methane, carbon dioxide, ... -
Surface charge change in carbonates during low-salinity imbibition
(Peer reviewed; Journal article, 2024-06)Optimizing the injection water salinity could present a cost-effective strategy for improving oil recovery. Although the literature generally acknowledges that low-salinity improves oil recovery in laboratory-scale ... -
Underground hydrogen storage (UHS) in natural storage sites: A perspective of subsurface characterization and monitoring
(Peer reviewed; Journal article, 2024-05)With the long-standing efforts of green transition in our society, underground hydrogen storage (UHS) has emerged as a viable solution to buffering seasonal fluctuations of renewable energy supplies and demands. Like ... -
Mixing dynamics and recovery factor during hydrogen storage in depleted gas reservoirs
(Peer reviewed; Journal article, 2024-06)Large-scale hydrogen storage is strategically important for society and depleted gas reservoirs have been proposed as a potential solution. However, the mixing with remaining hydrocarbon gas during injection/production ... -
Tektonisk-sedimentære egenskaper av øvre jura sedimentære bergarter i Fenja-området, Norskehavet
(Bachelor thesis, 2024)This study focuses on enhancing the understanding of the relationship of normal fault and Upper Jurassic sandstone deposits in the Fenja area, situated within the Norwegian Sea. Utilizing data from three wells (6406/11-1 ... -
Geotermisk energipotensiale i Norskehavet: En casestudie fra Draugen-området på Trøndelag-plattformen.
(Bachelor thesis, 2024)Geothermal energy, originating from Earth's crust, represents a promising renewable energy source that could prove vital for a sustainable future. This case study investigates the Draugen field area on the Trøndelag Platform, ... -
Ostwald ripening of gas bubbles in porous media: Impact of pore geometry and spatial bubble distribution
(Peer reviewed; Journal article, 2024)We study pore-scale gas bubble ripening in porous media by combining a mass transfer method based on chemical potential differences with a level-set method for updating the gas/liquid configurations. We examine the impact ... -
Contribution of Geosciences in the Study of Anthropogenic Activities in Different Temporal and Spatial Contexts
(PhD thesis UiS;, Doctoral thesis, 2024)From Homo sapiens, anthropogenic activities have impacted Earth systems at different spatial and time scales, particularly since the mid-twentieth century as the geological record confirms. Such impact has triggered Earth ... -
How diagenetic rock composition and mineralogical changes associated with water injection affect geomechanics and fluid behaviour in chalk i.e. producibility (IOR)
(PhD thesis UiS; 774, Doctoral thesis, 2024)Geo-mechanical responses associated with seawater injection for improved oil recovery (IOR) processes have been thoroughly investigated during the last few decades. It has been suggested that the presence of non-carbonate ... -
Low Carbon Enhanced Oil Recovery Solution for Carbonates
(PhD thesis UiS;, Doctoral thesis, 2024)Oil production from mature fields causes significant CO2 emissions, primarily linked to the management and processing of injected and produced water. As fields age, the demand for injected water increases, increasing both ... -
Hyper-parameter optimization for improving the performance of localization in an iterative ensemble smoother
(Peer reviewed; Journal article, 2023)This work aims to help improve the performance of an iterative ensemble smoother (IES) in reservoir data assimilation problems, by introducing a data-driven procedure to optimize the choice of certain algorithmic ... -
Geothermal gradient from well log data in the Froan and Gimsan basins, Norwegian Sea
(Bachelor thesis, 2023)This thesis reconstructs geothermal gradients in the Froan and Gimsan basins of the Norwegian Sea, utilizing well log data to derive a more accurate representation of the thermal regime of these basins. The study challenges ... -
Characterization and capillary pressure curve estimation of clayey-silt sediment in gas hydrate reservoirs of the South China Sea
(Peer reviewed; Journal article, 2023)The capillary pressure curve is a crucial basis for studying the pore structure and multiphase flow characteristics in oil and gas reservoirs. Due to the loose and unconsolidated nature of the clayey-silt sediment of natural ... -
Evaluation of Surface-Active Ionic Liquids in Smart Water for Enhanced Oil Recovery in Carbonate Rocks
(Peer reviewed; Journal article, 2023)Ionic modification of injected brines (Smart Water EOR) has previously demonstrated great potential for wettability alteration in carbonates from initially mixed-wet toward more water-wet conditions. However, the efficiency ... -
Bayesian interactive decision support for multi-attribute problems with even swaps
(Master thesis, 2022)Even swaps (ES) is a multi-criteria decision-making method introduced by Hammond et al. (1998) that makes it easier for decision makers (DMs) to make trade-offs between the decision criteria. The ES method can be further ... -
Numerical modelling of a high temperature borehole thermal energy storage system: Norway case study
(Peer reviewed; Journal article, 2023)Global warming is threatening life on earth. Utilising renewable energy is considered as the most effective measure to minimise anthropogenic CO2 emissions. High-temperature borehole thermal energy storage (BTES) systems ... -
Review of Different Methods for Identification of Transients in Pressure Measurements by Permanent Downhole Gauges Installed in Wells
(Peer reviewed; Journal article, 2023)Permanent downhole gauges (PDG) are massively installed in injection and production wells operated in different industries such as oil and gas, geological CO2 storage, and the geothermal industry. These gauges provide a ...