Vitenskapelige publikasjoner (TN-IEP)
Recent Submissions
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Water density–pressure–temperature modeling for drilling fluids in real-time HPHT applications
(Peer reviewed; Journal article, 2024)Accurate equations for extrapolating the density of water to varying pressures and temperatures are important for the petroleum industry. Water is a key component in drilling fluids, and extrapolation models of water are ... -
Revealing Microstructure and Enduring Properties of Settled Barite Extracted from an Offshore Well Two Decades Later: Well Abandonment and Slot Recovery
(Peer reviewed; Journal article, 2024)Barite settling in the annulus behind the casing is an undesired yet common occurrence during the life of a well. Over time, the drilling fluid left in the annulus settles, leaving behind solidified barite that can hinder ... -
Recent progress in the synthesis and electrocatalyticapplication of MXene‐based metal phosphide composites
(Peer reviewed; Journal article, 2024)In the domain of novel catalyst design and application, metal phosphides have attracted widespread interest due to their unique electronic structure and potential catalytic activity. Various types of supports that can ... -
Oil company investment in offshore windfarms. A business case
(Peer reviewed; Journal article, 2024)European petroleum majors have moved into offshore windfarm projects, with large investments and ambitious capacity and production targets. In aggressive bidding for Contracts for Difference in the UK, where oil companies ... -
Deep Water Subsea Energy Storage, Lessons Learned from the Offshore Oil and Gas Industry
(Peer reviewed; Journal article, 2024)In a future where a large portion of power will be supplied by highly intermittent sources such as solar- and wind-power, energy storage will form a crucial part of the power mix ensuring that there is enough flexibility ... -
Techno-economic analysis and energy management strategies for micro gas turbines: A state-of-the-art review
(Peer reviewed; Journal article, 2024)With the increasing emphasis on decentralized smart grids, Micro Gas Turbines have gained prominence as a key energy generation system. This comprehensive review emphasizes the crucial role of integrating Techno-Economic ... -
Investigation of operational settings, environmental conditions, and faults on the gas turbine performance
(Peer reviewed; Journal article, 2024)Gas turbine engines are complex mechanical marvels widely employed in diverse applications such as marine vessels, aircraft, power generation, and pumping facilities. However, their intricate nature renders them susceptible ... -
Improving history matching performance in a 3D field-scale case study by combining tracer and production data
(Peer reviewed; Journal article, 2023)Reservoir models are often subject to uncertainties, which, if not properly taken into account, may introduce biases to the subsequent reservoir management process. To improve reliability and reduce uncertainties, it is ... -
Utilizing Wastewater Tunnels as Thermal Reservoirs for Heat Pumps in Smart Cities
(Peer reviewed; Journal article, 2024-09)The performance of heat pump systems for heating and cooling heavily relies on the thermal conditions of their reservoirs. This study introduces a novel thermal reservoir, detailing a 2017 project where the Municipality ... -
Building Performance Simulation of MyBox Energy Lab in Norway: Integrating the Human Dimension in Energy Use Analysis
(Conference object, 2024)The MyBox energy lab at the University of Stavanger presents an innovative integration of living and research spaces housed within six repurposed shipping containers, where energy consumption data has been logged hourly ... -
Application of machine learning modeling for the upstream oil and gas industry injury rate prediction
(Peer reviewed; Journal article, 2024-04)Introduction: Yearly, the International Labor Organization report indicates many workplace accident occurrences. The degree of the happenings depends on the workplace environment setting and the incident regulatory measures ... -
An Inductive Bias for Emergent Communication in a Continuous Setting
(Peer reviewed; Journal article, 2024)We study emergent communication in a multi-agent reinforcement learning setting, where the agents solve cooperative tasks and have access to a communication channel. The communication channel may consist of either discrete ... -
Gas Evolution in Li-ion Rechargeable Batteries: A Review on Operando Sensing Technologies, Gassing Mechanisms, and Emerging Trends
(Peer reviewed; Journal article, 2024-06)Gas evolution is fundamentally problematic in rechargeable batteries, and may lead to swelling, smoking, and device-level failure. In laboratories, monitoring gas evolution can help understand dynamic chemical events inside ... -
An Artificial Neural Network-Based Fault Diagnostics Approach for Hydrogen-Fueled Micro Gas Turbines †
(Peer reviewed; Journal article, 2024-02)The utilization of hydrogen fuel in gas turbines brings significant changes to the thermophysical properties of flue gas, including higher specific heat capacities and an enhanced steam content. Therefore, hydrogen-fueled ... -
Ripening of Capillary-Trapped CO2 Ganglia Surrounded by Oil and Water at the Pore Scale: Impact of Reservoir Pressure and Wettability
(Peer reviewed; Journal article, 2024-05)Mass transfer by Ostwald ripening can impact the life and volume of capillary-trapped CO2 in the subsurface. CO2 storage in depleted hydrocarbon reservoirs encounters various preferences for wetting of the porous rock, ... -
Cuttings Transport With Oil- and Water-Based Drilling Fluids
(Peer reviewed; Journal article, 2024-01)Deviated well sections are common in most modern offshore well construction designs. In the North Sea region, which is a good example of mature areas, practically all producer or injector wells have highly deviated well ... -
Learning control applied to a digital-to-analogue converter
(Chapter, 2023)Digital-to-analogue converters (DACs) exhibit several non-ideal effects that deteriorate performance. Methods in feedback control can reduce such effects. Due to implementation limitations, the feedback signal in existing ... -
Effect of Organic Retarders on Fluid-State and Strength Development of Rock-Based Geopolymer
(Chapter, 2023)Granite waste is rich in aluminum and silicate has the potential of turning to geopolymer material after mixing with an alkali solution. One of the challenges in developing a geopolymer is to select a suitable retarder to ... -
Criterion for sufficiently large dither amplitude to mitigate non-linear glitches
(Chapter, 2023)A model describing glitch disturbances is introduced and analysed. The model is used to find the response of glitch disturbances when adding a periodic dither to the input and applying low-pass filtering to the output. ... -
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 ...
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