Blar i Vitenskapelige publikasjoner (TN-IEP) på tittel
Viser treff 53-72 av 222
-
Data-Driven Approaches Tests on A Laboratory Drilling System
(Peer reviewed; Journal article, 2020)In recent years, considerable resources have been invested to exploit vast amounts of data that get collected during exploration, drilling and production of oil and gas. Data-related digital technologies potentially become ... -
Data-driven sensitivity analysis of complex machine learning models: A case study of directional drilling
(Peer reviewed; Journal article, 2020-12)Classical sensitivity analysis of machine learning regression models is a topic sparse in literature. Most of data-driven models are complex black boxes with limited potential of extracting mathematical understanding of ... -
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 ... -
Decarbonization of the Iron and Steel Industry With Direct Reduction of Iron Ore with Green Hydrogen
(Peer reviewed; Journal article, 2020)Production of iron and steel releases seven percent of the global greenhouse gas (GHG) emissions. Incremental changes in present primary steel production technologies would not be sufficient to meet the emission reduction ... -
Decarbonizing primary steel production : Techno-economic assessment of a hydrogen based green steel production plant in Norway
(Peer reviewed; Journal article, 2022)High electricity cost is the biggest challenge faced by the steel industry in transitioning to hydrogen based steelmaking. A steel plant in Norway could have access to cheap, emission free electricity, high-quality iron ... -
Design and Early Age Performance of Sustainable One-Part Geopolymers for Well Cementing
(Peer reviewed; Journal article, 2023-10)One-part geopolymers, known as “just add water” (JAW), alkali-activated formulation is presented in this work. This work reveals the design and development of short-term properties of JAW geopolymers for use in oilwell ... -
Determinants of oil and gas investments on the Norwegian Continental Shelf
(Journal article; Peer reviewed, 2018-02)This paper studies the investment decisions by oil and gas companies operating on the Norwegian Continental Shelf. We account for the heterogeneity across the fields by including field-specific variables, including geological ... -
Development of a novel experimental technique for the measurement of residual wall layer thickness in water-oil displacement flows
(Peer reviewed; Journal article, 2023)The effective removal and displacement of fluids is important in many industrial and environmental applications, such as for operation and cleaning of process equipment, fluid injection in porous media for oil recovery or ... -
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 ... -
Development of One-Part Rock-Based Geopolymers for Downhole Cementing Applications
(Peer reviewed; Journal article, 2023-10)The use of geopolymers as a full replacement for cement in oil well cementing applications requires the development of not only environmentally friendly but also user-friendly cementitious materials. This study aims to ... -
Digitalization and changes to work organization and management in the Norwegian petroleum industry
(Peer reviewed; Journal article, 2023)This article analyses how implementation and use of digital technologies involve changes in work content, organization, and management in the petroleum industry. This is important, given that the industry is in a phase ... -
Downhole Temperature Modeling for Non-Newtonian Fluids in ERD Wells
(Journal article; Peer reviewed, 2018)Having precise information of fluids' temperatures is a critical process during planning of drilling operations, especially for extended reach drilling (ERD). The objective of this paper is to develop an accurate temperature ... -
Drilling data quality improvement and information extraction with case studies
(Peer reviewed; Journal article, 2020)Data analytics is a process of data acquiring, transforming, interpreting, modelling, displaying and storing data with an aim of extracting useful information, so that decision-making, actions executing, events detecting ... -
Dynamic interfacial tension measurement method using axisymmetric drop shape analysis
(Journal article; Peer reviewed, 2018-06)The current method describes a simple modification to the dynamic and equilibrium interfacial tension (IFT) measurement in a multiphase system (gas-liquid/liquid-liquid) by the Axisymmetric Drop Shape Analysis (ADSA) pendant ... -
Dynamic Performance and Control Strategies of Micro Gas Turbines: State-of-the-Art Review, Methods, and Technologies
(Peer reviewed; Journal article, 2023)The stringent energy and climate change regulations have resulted in a growing share of non-dispatchable renewable energy sources (i.e., solar and wind) in the global energy mix. This has influenced the use of fast and ... -
Early- and Late-Time Prediction of Counter-Current Spontaneous Imbibition, Scaling Analysis and Estimation of the Capillary Diffusion Coefficient
(Peer reviewed; Journal article, 2023-03)Solutions are investigated for 1D linear counter-current spontaneous imbibition (COUSI). It is shown theoretically that all COUSI scaled solutions depend only on a normalized coefficient Λn (Sn) with mean 1 and no other ... -
Effect of buoyancy and inertia on viscoplastic fluid-fluid displacements in a regular and an irregular eccentric annulus
(Peer reviewed; Journal article, 2020-09)Casing strings and liners are important subsurface structural components in petroleum and in geothermal wells. After the casing string has been run in hole, it is cemented to the formation by pumping a sequence of spacer ... -
Effect of Calcium Expansive Additives on the Performance of Granite-Based Geopolymers for Zonal Isolation in Oil and Gas Wells
(Peer reviewed; Journal article, 2023)Geopolymers have emerged as a promising alternative to Portland cement for oil and gas wells. Achieving effective zonal isolation by use of geopolymers may require controlling their expansion. This study investigates the ... -
The Effect of Different Drilling Fluids on Mechanical Friction
(Peer reviewed; Journal article, 2017)A very important aspect in highly inclined wellbores is the mechanical friction. For extended reach drilling (ERD) and through tubing extended reach drilling (TTERD) this can be a limiting factor. Friction caused by the ... -
Effect of Iron Oxide Nanoparticles on the Properties of Water-Based Drilling Fluids
(Peer reviewed; Journal article, 2020-12)In recent years, several studies have indicated the impact of nanoparticles (NPs) on various properties (such as viscosity and fluid loss) of conventional drilling fluids. Our previous study with commercial iron oxide NPs ...