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Methodology Development for the Characterization of Carbon Formed in the Direct Process
(Master thesis, 2019) -
A Methodology for Finding the Optimal Location of the Processing Facility in Offshore Oil and Gas Developments
(Master thesis, 2017)To ensure a sustained and economically feasible production of hydrocarbons in offshore oil and gas developments, it is essential that the oil recovery technique, location of the processing facility and the pipeline design ... -
Methodology to calculate interfacial tension under electric field using pendent drop profile analysis
(Journal article; Peer reviewed, 2019)In this paper, we present a methodology to calculate interfacial tension of a water–oil interface under an electric field. The Young–Laplace equation, conventionally used to estimate surface/interfacial tension in axisymmetric ... -
Methods for Paper Structure Characterisation by Means of Image Analysis
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:98, Doctoral thesis, 2004)Paper is a complex, disordered porous media. The complexity makes it difficult to obtain more than empirical knowledge of the relationship between papermaking variables and the resulting paper structural properties. It is ... -
Methyl Methacrylate Synthesis: Thermodynamic Analysis for Oxidative Esterification of Methacrolein and Aldol Condensation of Methyl Acetate
(Peer reviewed; Journal article, 2020)Methyl methacrylate (MMA) as a specialty monomer of polymers has motivated industry to develop clean and sustainable technologies for its production. Herein, a comprehensive thermodynamic analysis of MMA production from ... -
Microcalorimetry on Cu-MCM-22 Reveals Structure-Activity Relationships for the Methane-to-Methanol Reaction
(Peer reviewed; Journal article, 2023)With a stepwise mechanism for direct methane activation to methanol (MTM) over Cu-zeolites, it is possible to produce methanol with high selectivity. With this study, we apply adsorption/desorption experiments with ... -
Microcalorimetry Study of the Adsorption of Asphaltenes and Asphaltene Model Compounds at the Liquid–Solid Surface
(Journal article; Peer reviewed, 2016)The adsorption of an acidic polyaromatic asphaltene model compound (C5PeC11) and indigenous C6-asphaltenes onto the liquid–solid surface is studied. Model compound C5PeC11 exhibits a similar type of adsorption with a plateau ... -
Microchannel Membrane Reactor for production of pure Hydrogen - Inhibition effects on thin self-supported Pd/Ag membranes
(Master thesis, 2014)Hydrogen gas is one of the most produced gases in the world for industrial purposes, generally produced by methane steam reforming. The demand for clean hydrogen is rising as technology is advancing. Combining a hydrogen ... -
Microfluidic droplet detection via region-based and single-pass convolutional neural networks with comparison to conventional image analysis methodologies.
(Peer reviewed; Journal article, 2022)As the complexity of microfluidic experiments and the associated image data volumes scale, traditional feature extraction approaches begin to struggle at both detection and analysis pipeline throughput. Deep-neural networks ... -
Microfluidic Interfacial Tension
(Master thesis, 2022)En metode for å måle overflatespenning ved hjelp av microfluidics har blitt utviklet. Utviklingen av modellen følger metodikk publisert i litteraturen. En ikke-ionisk surfaktant ble brukt for å manipulere overflatespenning ... -
Microfluidic Investigation of Crude Oil Droplet Coalescence: Effect of Oil/Water Composition and Droplet Aging
(Journal article; Peer reviewed, 2020)The coalescence between crude oil droplets is a major factor influencing the efficiency of most produced water treatment processes. As the droplets grow bigger in size, it is easier to remove them from the continuous water ... -
Microfluidic investigation of enhanced oil recovery: The effect of aqueous floods and network wettability
(Peer reviewed; Journal article, 2021)Rock wettability significantly influences underground oil extraction efficiency during enhanced oil recovery (EOR) processes. We experimentally examine the effect of wettability on oil recovery at pore-scale using ... -
Microfluidic method for determining drop-drop coalescence and contact times in flow
(Peer reviewed; Journal article, 2020)Coalescence kinetics is an important parameter when describing the stability of dispersions. A number of methods to measure coalescence time are available, however they often take long time and do not allow working with ... -
Microfluidic methods for studying oil recovery by aqueous floods at different wettability, temperature and pressure conditions
(Doctoral theses at NTNU;2021:78, Doctoral thesis, 2021)To keep up with the energy consumption in the world and recover sustainably from the currently developed oil fields, enhanced oil recovery (EOR) methods have been proven important. To be able to test the processes and new ... -
A Microfluidic Study of Droplet And Particle Retention: A Path from the Rationale to Pore-Scale Experiments
(Doctoral theses at NTNU;2022:291, Doctoral thesis, 2022)Produced water is the major byproduct of oil and gas production, containing a number of components that can be harmful to the environment, e.g., dispersed particles, dispersed oil, dissolved organics. Re-injection is an ... -
A microfluidic study of oil displacement in porous media at elevated temperature and pressure
(Peer reviewed; Journal article, 2021)Microfluidics methods offer possibilities for visual observations of oil recovery processes. Good control over test parameters also provides the opportunity to conduct tests that simulate representative reservoir conditions. ... -
Microfluidic Study on the Attachment of Crude Oil Droplets to Gas Bubbles
(Journal article; Peer reviewed, 2018)Gas flotation is often used during treatment of the oilfield produced water. It relies on the generation of gas bubbles and their attachment to oil drops, for example, by forming an oil film on the surface of a gas bubble. ... -
Microfluidic Synthesis of Graphene Quantum Dots and the Subsequent Ultrafast Photophysics: Building Blocks Towards Autonomous Nanomaterial Synthesis Platforms
(Doctoral theses at NTNU;2022:60, Doctoral thesis, 2022)Autonomous synthesis of nanomaterials is a harmonious pursuit which assembles various building blocks from a toolbox consisting of microfluidics, robotics, artificial-intelligence, and spectroscopy, amongst a plethora of ... -
Microfluidic testing of flocculants for produced water treatment: Comparison with other methodologies
(Peer reviewed; Journal article, 2020)Flocculants are often added during produced water treatment to improve the crude oil droplet growth and separation from the water phase. Prior to use in the field, their performance is tested in laboratory conditions, ... -
Microfluidic tools for studying coalescence of crude oil droplets in produced water
(Journal article; Peer reviewed, 2018)The major contaminant targeted during the treatment of the oilfield produced water is dispersed oil. The efficiency of most separation processes highly relies on the size of the droplets, which can be increased through ...