Blar i Department of Energy Resources (TN-IER) på tittel
Viser treff 27-46 av 271
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Causal Inference of Interwell Connectivity
(Master thesis, 2021)Interwell connectivity is a measure of the degree to which information is translated between wells in a reservoir. The translated information may include changes in pressure, fluid flow, or other physical properties. This ... -
cdem: A macOS program for discrete element modeling of tectonic structures
(Peer reviewed; Journal article, 2023-08)cdem is a macOS document-based application for two-dimensional discrete element modeling of tectonic structures and their associated deformation. Documents encapsulate simulations that can be run and explored simultaneously. ... -
Characteristic forced and spontaneous imbibition behavior in strongly water-wet sandstones based on experiments and simulation
(Peer reviewed; Journal article, 2022-05)Forced and spontaneous imbibition of water is performed to displace oil from strongly water-wet Gray Berea (~130 mD) and Bentheimer (~1900 mD) sandstone core plugs. Two nonpolar oils (n-heptane and Marcol-82) were used as ... -
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 ... -
Characterization based machine learning modeling for the prediction of the rheological properties of water‑based drilling mud
(Peer reviewed; Journal article, 2021)The successful drilling operation depends upon the achievement of target drilling attributes within the environmental and economic constraints but this is not possible only on the basis of laboratory testing due to the ... -
Characterization of Nannofacies in Upper Cretaceous Chalks used in IOR Research
(Masteroppgave/UIS-TN-IER/2018;, Master thesis, 2018-07)The aim of this thesis is to contribute to enhanced oil recovery (EOR) research by characterizing nannofacies in chalk samples used in increased oil recovery (IOR) flooding experiments with a MgCl2 brine at reservoir ... -
CO2 Convective Dissolution in Oil-Saturated Unconsolidated Porous Media at Reservoir Conditions
(Peer reviewed; Journal article, 2021)During CO2 storage, CO2 plume mixes with the water and oil present at the reservoir, initiated by diffusion followed by a density gradient that leads to a convective flow. Studies are available where CO2 convective mixing ... -
CO2 Dissolution and Convection in Oil at Realistic Reservoir Conditions: A Visualization Study.
(Peer reviewed; Journal article, 2021)CO2 convective mixing has been extensively studied for CO2 dissolution in saline water but very limited with the presence of oil. The objective of this work was to visually study the supercritical CO2 (sCO2) dissolution ... -
Comparing hydro- and wind electricity sources in Norway.
(Bachelor thesis, 2023)The motivation for this study was to get a better understanding of the two main power production methods, as more and more wind power plants are appearing in Norway, alongside a rise in the export of electricity overseas. This ... -
Comparing photogrammetric and iPad-Lidar models of exposed faces in the Rogfast tunnel.
(Bachelor thesis, 2022)Cameras have become progressively more advanced in the 21st century. They are a ubiquitous feature in electronic devices, which brings more opportunities for collecting data in the field and creating 3D geologic models. ... -
Comparison of facies models based on stochastic versus deterministic AVO inversion
(Masteroppgave/UIS-TN-IER/2020;, Master thesis, 2020)This thesis compares facies models based on deterministic AVO inversion – which is a standard approach in the industry, and stochastic AVO inversion – which is a newer, less popular approach, but according to literature, ... -
Comparison of intercept methods for correction of steady state relative permeability experiments for capillary end effects
(Peer reviewed; Journal article, 2022)Steady-state relative permeability experiments are performed by coinjection of two fluids through core plug samples. The relative permeabilities can be calculated using Darcy’s law from the stabilized pressure drop and ... -
Compositional variation of the Zechstein Group in the Norwegian North sea: Implications for underground storage in salt caverns
(Peer reviewed; Journal article, 2023)Halite beds in the upper Permian Zechstein Group represent an opportunity for the future development of underground storage caverns. However, geological factors such as lithological heterogeneities, cap rock characteristics ... -
Conditional data generation for an improved diagnosis in prostate cancer
(Master thesis, 2021)Prostate Cancer is the second most common cancer in men worldwide, the fourth most commonly occurring cancer overall and the sixth leading cause of cancer death among men worldwide. Early detection of prostate cancer is ... -
Constrained non-linear AVO inversion based on the adjoint-state optimization
(Peer reviewed; Journal article, 2022)Pre-stack AVO inversion of seismic data is a modeling tool for estimating subsurface elastic properties. Our focus is on the model-based inversion method where then unknown variables are estimated by minimizing the misfit ... -
Controls and Distributions Of Tertiary Sandstones in Southern Viking Graben
(Master thesis, 2022)The Tertiary succession in the Ve Sub-basin, Sleipner Terrace, Utsira High and Ling Depression is studied to understand the lateral and vertical distribution of Tertiary sandstones, to know if Tertiary tectonics had an ... -
Controls of basin margin tectonics on the Lower Cretaceous sedimentation in the Norwegian Barents Sea
(PhD thesis UiS;530, Doctoral thesis, 2020-06)Structural styles and stratigraphic patterns along North Atlantic margins display a large spectrum of complexity and variability. An extensive amount of subsurface data from the north-central and south-western Barents Sea ... -
Core wettability reproduction: A new solvent cleaning and core restoration strategy for chalk cores
(Peer reviewed; Journal article, 2020)Laboratory core restoration procedures include different core cleaning solvents, establishment of initial water saturation (Swi) by diverse techniques and processes of crude oil exposure that influence the final core wetting ... -
Core-scale sensitivity study of CO2 foam injection strategies for mobility control, enhanced oil recovery, and CO2 storage
(Peer reviewed; Journal article, 2020)This paper presents experimental and numerical sensitivity studies to assist injection strategy design for an ongoing CO2 foam field pilot. The aim is to increase the success of in-situ CO2 foam generation and propagation ... -
Data Assimilation Methods in Seismic Inversion
(Masteroppgave/UIS-TN-IER/2018;, Master thesis, 2018-06)Full-waverform inversion (FWI) is a powerful tool for getting high resolution images from seismic data to understand formations and the reservoir characteristics. But the inversion problems usually do not have unique ...