Browsing Vitenskapelige publikasjoner (TN-IEP) by Title
Now showing items 157-176 of 222
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Pore-scale Ostwald ripening of gas bubbles in the presence of oil and water in porous media
(Peer reviewed; Journal article, 2023)Hypothesis Ostwald ripening of gas bubbles is a spontaneous mass transfer process that can impact the storage volume of trapped gas in the subsurface. In homogeneous porous media with identical pores, bubbles evolve toward ... -
Potential Assessment and Economic Analysis of Concentrated Solar Power against Solar Photovoltaic Technology
(Peer reviewed; Journal article, 2023)Competition between concentrated solar power and solar photovoltaic has been the subject of frequent debate in recent years based on their cost of fabrication, efficiency, storage, levelized cost of energy, reliability, ... -
Power Transmission and Control in Microturbines’ Electronics: A Review
(Peer reviewed; Journal article, 2023)When the shaft rotates in microturbines, the rotational movement is converted to electrical power. This is achieved through a permanent magnet synchronous machine (PMSM) housed on the shaft and the power electronics ... -
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 ... -
Pressure Build-Up in Closed Wells During Kick Migration and Fluid Compressibility Effects
(Chapter, 2022)If a kick is migrating in a closed well, this will lead to pressures building up in the well. It has earlier been shown that for Non-Newtonian fluids, suspension effects will make it impossible to deduce a unique gas ... -
Problem and models of multicriteria decision making and risk assessment of the arctic offshore oil and gas field development
(Peer reviewed; Journal article, 2019)The article is devoted to the systematic solution of problems of multi-criteria assessment and the possibility of implementing projects for the development of hydrocarbon deposits on the Arctic shelf under conditions of ... -
Promoting effect of Fe on supported Ni catalysts in CO2 methanation by in situ DRIFTS and DFT study
(Peer reviewed; Journal article, 2020-12)Bimetallic NiFe catalysts have emerged as a promising alternative to the traditional Ni catalysts for CO2 methanation. However, the promoting effect of Fe on the bimetallic catalysts remains ambiguous. In this study, a ... -
Rayleigh and Wood anomalies in the diffraction of acoustic waves from the periodically corrugated surface of an elastic medium
(Peer reviewed; Journal article, 2016)By the use of the Rayleigh method we have calculated the angular dependence of the reflectivity and the efficiencies of several other diffracted orders when the periodically corrugated surface of an isotropic elastic medium ... -
Real-Time Minimization of Mechanical Specific Energy with Multivariable Extremum Seeking
(Peer reviewed; Journal article, 2021)Drilling more efficiently and with less non-productive time (NPT) is one of the key enablers to reduce field development costs. In this work, we investigate the application of a data-driven optimization method called ... -
Recent Advances in Green Synthesis and Modification of Inorganic Nanomaterials by Ionizing and Non-Ionizing Radiations
(Peer reviewed; Journal article, 2020-08)Alternative to conventional Joule heating, radiation in the forms of electromagnetic waves and particle beams offers a promising route to energize the green synthesis and modification of nanomaterials with high time ... -
Recent Progress in Two-Dimensional Materials for Electrocatalytic CO2 Reduction
(Peer reviewed; Journal article, 2022)Electrocatalytic CO2 reduction (ECR) is an attractive approach to convert atmospheric CO2 to value-added chemicals and fuels. However, this process is still hindered by sluggish CO2 reaction kinetics and the lack of efficient ... -
Recent technology development in solvent-free electrode fabrication for lithium-ion batteries
(Peer reviewed; Journal article, 2023-07)Electrodes for commercial lithium-ion batteries (LiBs) are typically manufactured with slurry-casting (SC) procedure. The high cost and limited energy density caused by SC procedure impede new emerging application. Developing ... -
Reference Dataset for Rate of Penetration Benchmarking
(Peer reviewed; Journal article, 2020-10)In recent years, there were multiple papers published related to rate of penetration prediction using machine learning vastly outperforming analytical methods. There are models proposed reportedly achieving R2 values as ... -
Reproducing wettability in sandstone reservoir core material in laboratory core restorations
(Peer reviewed; Journal article, 2021-09)Replicating initial reservoir wettability conditions in core restoration by core cleaning and fluid restoration in the laboratory is of great importance. There are several core cleaning and restoration protocols used in ... -
Restoration of annular zonal isolation using localized casing expansion (LCE) technology: Treatment of near-horizontal test sections containing a free-water channel
(Peer reviewed; Journal article, 2021-11)Fluid migration behind casings is a well integrity problem that can result in sustained casing pressure, undetected leaks to the environment, and potentially very difficult remediation attempts. Traditional methods for ... -
Retarding mechanism of Zn2+ species in geopolymer material using Raman spectroscopy and DFT calculations
(Peer reviewed; Journal article, 2022)Geopolymers are the most promising alternative to Ordinary Portland Cement for oil-well cementing and well abandonment. To that end, the slurry needs a required pumping time ensured by the addition of retarders. Although ... -
Revealing Silicon’s Delithiation Behaviour through Empirical Analysis of Galvanostatic Charge–Discharge Curves
(Peer reviewed; Journal article, 2023-04)The galvanostatic charge–discharge (GCD) behaviour of silicon (Si) is known to depend strongly on morphology, cycling conditions and electrochemical environment. One common method for analysing GCD curves is through ... -
Revealing Silicon’s Delithiation Behaviour through Empirical Analysis of Galvanostatic Charge–Discharge Curves
(Peer reviewed; Journal article, 2023-04)The galvanostatic charge–discharge (GCD) behaviour of silicon (Si) is known to depend strongly on morphology, cycling conditions and electrochemical environment. One common method for analysing GCD curves is through ... -
Review and investigations on geothermal energy extraction from abandoned petroleum wells
(Journal article; Peer reviewed, 2018-08)Geothermal energy is a sustainable and renewable energy source, which can be used in electricity production, space heating/cooling, and other industrial applications. In the recent years, it has been gathering more and ... -
Review of Experimental Sorption Studies of CO2 and CH4 in Shales
(Journal article; Peer reviewed, 2019-10)In recent years CO2 injection in shale has been investigated with aim to enhance shale gas recovery (ESGR) and permanently sequester CO2. This paper reviews the state of research on CH4 and CO2 sorption in shale. We present ...