Department of Energy and Petroleum Engineering (TN-IEP)
Samlinger i dette delarkivet
-
PhD theses (TN-lEP) [26]
-
Studentoppgaver (TN-IEP) [323]
Master- og bacheloroppgaver i energi- og petroleumsteknologi
Nye registreringer
-
Temperature-Dependent Classification of Geopolymers Derived from Granite Designed for Well Cementing Applications
(Peer reviewed; Journal article, 2023)Alternative materials such as geopolymers appear to have potential advantages compared to Portland cement. However, the application of geopolymers for all sections of the well is still a major challenge due to the difference ... -
Solving Nonlinear Conservation Laws of Partial Differential Equations Using Graph Neural Networks
(Peer reviewed; Journal article, 2023)Nonlinear Conservation Laws of Partial Differential Equations (PDEs) are widely used in different domains. Solving these types of equations is a significant and challenging task. Graph Neural Networks (GNNs) have recently ... -
Fixed type-oscillating water column front wall angle variation and impact on chamber performance: CFD numerical wave tank assessment
(Peer reviewed; Journal article, 2023)This study investigates optimizing the front wall geometry of an Oscillating Water Column (OWC) chamber to enhance turbine performance and output efficiency when harnessing energy from progressive waves with consistent ... -
Development of a surrogate model of a trans-critical CO2 heat pump for use in operations optimization using an artificial neural network
(Peer reviewed; Journal article, 2023)Conventional physics-based models can demand substantial computational resources when employed for operational optimization. To allow faster system simulations that can be employed for operational optimization, a surrogate ... -
Artificial neural network model for predicting CO2 heat pump behaviour in domestic hot water and space heating systems
(Peer reviewed; Journal article, 2023)The natural refrigerant, CO2, possesses thermophysical properties that make it highly suitable for domestic hot water (DHW) production using heat pump technology. In this study, the development and validation of an artificial ... -
Assessing Impact of Borehole Field Data’s Input Parameters on Hybrid Deep Learning Models for Heating and Cooling Forecasting: A Local and Global Explainable AI Analysis
(Peer reviewed; Journal article, 2023)Achieving accurate performance forecasting of borehole heat exchanger is essential for optimizing ground source heat pump systems, enabling optimal control, and facilitating energy-efficient operations with enhanced ... -
Machine learning for underground gas storage with cushion CO2 using data from reservoir simulation
(Peer reviewed; Journal article, 2023)Underground natural gas storage (UNGS) is a means to store energy temporarily for later recovery and use. In such storage operations, carbon dioxide (CO2) can be injected as cushion gas to improve the operating efficiency ... -
Ostwald ripening of trapped gas bubbles in porous media : A pore-scale perspective
(PhD thesis UiS;747, Doctoral thesis, 2024)Ostwald ripening of gas bubbles is a thermodynamic process for mass transfer, which is significant for both foam-enhanced oil recovery and underground gas storage. During recovery, it can impact the macroscopic efficiency. ... -
An approach for optimization of controllable drilling parameters for motorized bottom hole assembly in a specific formation
(Peer reviewed; Journal article, 2023)This study focuses on optimizing drilling parameters when using Positive Displacement Motors (PDMs). In drilling operations involving mud motors, weight-on-bit (WOB) alterations lead to variations in the system's parasitic ... -
Challenges associated with mercury occurrence on the Norwegian Continental Shelf
(Master thesis, 2023)The thesis includes a review of the heavy metal mercury, with focus on its origin, effect on the environment, and its role in the petroleum industry. Mercury emissions from the petroleum industry in Norway is looked into ... -
Breaking Scaling Relations for Highly Efficient Electroreduction of CO2 to CO on Atomically Dispersed Heteronuclear Dual-Atom Catalyst
(Peer reviewed; Journal article, 2023)Conversion of CO2 into value-added products by electrocatalysis provides a promising way to mitigate energy and environmental problems. However, it is greatly limited by the scaling relationship between the adsorption ... -
Hydrogen Safety Considerations: Mitigating Risks and Securing Operations in Enclosed Spaces
(Peer reviewed; Journal article, 2023)The increased interest in hydrogen as a versatile and environmentally friendly energy carrier has led to its recognition as a potential solution for addressing environmental concerns and challenges associated with transitioning ... -
Enabling long cycle life lithium-ion capacitors through electrode-electrolyte interface optimization
(PhD thesis UiS;749, Doctoral thesis, 2024)Electrode-electrolyte interfaces in electrochemical cells represent critical boundaries between the electrode and electrolyte where most charge transfer or storage processes are initiated. Accordingly, the interface ... -
Prediction of Optimal Production Time during Underground CH4 Storage with Cushion CO2 Using Reservoir Simulations and Artificial Neural Networks
(Peer reviewed; Journal article, 2023)Injection of carbon dioxide (CO2) in aquifers for underground natural gas storage (UNGS) can improve the operating efficiency of the storage facility during gas injection and production and later serve as a solution for ... -
Day-ahead optimal scheduling of micro gas turbine-based microgrid considering electricity and heating energy
(Peer reviewed; Journal article, 2023)Microgrids are considered as the crucial element in the integration of various distributed energy resources in buildings. They are capable of operating in both grid-connected and islanded mode and have shown immense potential ... -
Selection of Optimal Well Trajectory Using Multi-Objective Genetic Algorithm and TOPSIS Method
(Peer reviewed; Journal article, 2023)This study presents a novel approach for optimizing well paths in extended reach drilling (ERD) wells. Different trajectories can be used for ERD wells, each with its pros and cons. Previous research overlooked certain ... -
Experimental and theoretical investigation of the mechanisms of drying during CO2 injection into saline reservoirs
(Peer reviewed; Journal article, 2023)A viable CO2 storage resource must have sufficient storage capacity, reliable containment efficiency and adequate well injectivity. Deep saline formations stand out in terms of storage capacity and containment efficiency. ... -
Exploring the behaviour of Silicon by empirical analysis of galvanostatic charge-discharge curves
(PhD Theses;, Doctoral thesis, 2024)The capability of battery materials to deliver not only high lithium (Li) storage capacity, but also the ability to operate at high charge/discharge rates is an essential property for development of new batteries. First, ... -
Influence of fluid viscosity hierarchy on the reverse-circulation displacement efficiency
(Peer reviewed; Journal article, 2023)Reverse-circulation cementing is an alternative strategy for well cementing where the cementing fluids are injected directly into the annulus from the surface. This cementing strategy can reduce downhole circulation pressures ... -
The Effect of Lost Circulation Material on Herschel-Bulkley Parameters
(Peer reviewed; Journal article, 2023)To hinder loss of drilling fluids into downhole formations while drilling geothermal, CO2 injection or petroleum wells, Lost Circulation Material (LCM) is added to the drilling fluids. These materials consist of many ...