Browsing Department of Energy Resources (TN-IER) by Title
Now showing items 101-120 of 271
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IMPACT OF DATA PRE-PROCESSING TECHNIQUES ON MACHINE LEARNING MODELS
(Master thesis, 2022)The Volve dataset, which contains the time series values of different sensors that have been used at the Volve drilling site contains many flaws which make it hard for machine learning models to learn from the dataset and ... -
Impact of risk attitude on optimal IOR initiation time: A case study solved in a sequential decision-making framework powered by machine learning-based non-linear regression
(Master thesis, 2023)The least-squares Monte Carlo algorithm (LSM) is an efficient approximate dynamic programming algorithm for solving sequential decision-making problems, leveraging regression. Previous studies have showcased the LSM workflow ... -
The impact of salt tectonics on the Mesozoic sedimentation and petroleum systems of the Norwegian Barents Sea
(PhD thesis UiS;540, Doctoral thesis, 2020-09)In the Norwegian Barents Sea, Mesozoic and Cenozoic mobilization of Pennsylvanian-lower Permian layered evaporite sequences (LES) resulted in areas with salt tectonics (e.g. Nordkapp, Tromsø and Tiddlybanken basins), which ... -
The Impact of Salt Tectonics on the Thermal Evolution and the Petroleum System of Confined Rift Basins: Insights from Basin Modeling of the Nordkapp Basin, Norwegian Barents Sea
(Peer reviewed; Journal article, 2019-07)Although the thermal effect of large salt tongues and allochthonous salt sheets in passive margins is described in the literature, little is known about the thermal effect of salt structures in confined rift basins where ... -
The impact of seismic interpretation methods on the analysis of faults: a case study from the Snøhvit field, Barents Sea
(Peer reviewed; Journal article, 2021)Five seismic interpretation experiments were conducted on an area of interest containing a fault relay in the Snøhvit field, Barents Sea, Norway, to understand how the interpretation method impacts the analysis of fault ... -
Implementation of Adaptive Localization for Enhancing Ensemble-Based History Matching in Hydrocarbon Reservoir Management
(Master thesis, 2022)In reservoir management, the ensemble-based history matching is applied to quantify and update uncertainty in reservoir characterization with the main objective to support high quality decisions. However, the ensemble-based ... -
An Improved Approach in Estimating Gas Permeability for Tight Reservoir Rocks.
(Masteroppgave/UIS-TN-IEP/2020;, Master thesis, 2020-12-15)The impact of the permeability on ultra-tight porous media influences flow behaviour inside the media. The unconventional reservoir gas permeability significantly impacts rock property estimation crucial to unconventional ... -
The Influence of Adsorption Layer Thickness and Pore Geometry on Gas Production from Tight Compressible Shales
(Peer reviewed; Journal article, 2021-12)In tight shales, gas is stored in both free and adsorbed form. A one-dimensional model is derived for shale gas production by pressure depletion where the adsorbed layer thickness is of similar magnitude as the pore radius ... -
Influence of Hyperparameters of Neural Ordinary Differential Equations in Their Ability to Model Dynamic Systems Governed by ODEs
(Master thesis, 2022)In this thesis the Neural Ordinary Differential Equations (NODEs) are studied in their ability to model dynamic systems governed by ODEs. NODEs are a new type of artificial neural network that uses a feed-forward artificial ... -
Influence of Sandstone Mineralogy on the Adsorption of Polar Crude Oil Components and Its Effect on Wettability
(Peer reviewed; Journal article, 2022)The crude oil–brine–rock (COBR) system is a combination of contacting phases where polar organic molecules in crude oil, inorganic ions from the brine phase, and charged mineral surfaces participate in complex interactions. ... -
Influencing factors on petrography interpretations in provenance research – a case-study review
(Peer reviewed; Journal article, 2021)The use of framework petrography is a common initial step in provenance research of sand and sandstone. The data tend to be interpreted based on the three main components quartz, feldspar, and lithic fragments. Surprisingly ... -
Interaction between two calcite surfaces in aqueous solutions: Study of nano-scale interfacial forces using AFM and SFA
(Doctoral thesis, 2019-11)Carbonate-bearing rocks in the upper Earth’s crust are prone to continuous changes under influences of various physical and chemical processes. The macroscopic mechanical strength of carbonates is generally controlled by ... -
An interactive sequential-decision benchmark from geosteering
(Peer reviewed; Journal article, 2021)During drilling, to maximize future expected production of hydrocarbon resources, the experts commonly adjust the trajectory (geosteer) in response to new insights obtained through real-time measurements. Geosteering ... -
Interpretation of 1-D Counter-Current Spontaneous Imbibition Processes Using Microscopic Diffusion Theory and a Modified Buckley – Leverett Approach
(Peer reviewed; Journal article, 2020-04)This paper presents a new convenient and easy-to-use method to analyze and calculate measurable quantities in 1-D counter-current (COUC) spontaneous imbibition (SI) processes. Cumulative water imbibed vs time can be ... -
Investigating the Effect of Injection Rate and Oil Viscosity on Oil Recovery during Waterflooding
(Master thesis, 2021)For over a century, waterflooding of oil reservoirs have been performed to improve oil recovery for two reasons: to provide pressure support to the reservoir and to displace the oil entrapped in the pores of the rock. ... -
Investigating the PS seismic imaging of faults using seismic modelling and data from the Snøhvit field, Barents Sea
(Peer reviewed; Journal article, 2021)PS seismic data from the Snøhvit field are compared with seismic modelling to understand the effect of azimuthal separation and incidence angle on the imaging of faults and associated horizon discontinuities. In addition, ... -
Investigation of a new application for cellulose nanocrystals: a study of the enhanced oil recovery potential by use of a green additive
(Journal article; Peer reviewed, 2018-02)Cellulose nanocrystals (CNC) were investigated for use in a potential new application, enhanced oil recovery. Core flooding experiments were performed on outcrop sandstone cores using CNC particles dispersed in low salinity ... -
Investigation of torsional drillstring motion using finite element model
(Master thesis, 2021)In the thesis , a four degree of freedom dynamic drill string model suitable for prediction of self-excited torsional vibrations is modeled using the finite element method. The drill string equation of motion subjected to ... -
Investigation of vibration assisted cementing - a CFD study
(Master thesis, 2021)Abstract Primary cementing operations in the oil and gas industry are considered critical and complicated. For cementing operations to be successful, the fluid displacement in the annular volume has to be close to perfect. ... -
Joint Bayesian AVO and RMO inversion
(Masteroppgave/UIS-TN-IER/2019;, Master thesis, 2019-06-15)Seismic amplitude variation with offset (AVO) has proved to be a useful technique in oil exploration. However, the sensitivity of AVO to residual move-out (RMO) is considered a severe limitation. Small misalignments between ...