Browsing NTNU Open by Author "Simon, Sebastien Charles"
Now showing items 21-40 of 62
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Enhanced sedimentation and coalescence of petroleum crude oil emulsions by the new generation of environmentally friendly yellow chemicals
Barrabino, Albert; Kelesoglu, Serkan; Eftekhardadkhah, Mona; Simon, Sebastien Charles; Sjøblom, Johan (Journal article; Peer reviewed, 2017)This study compares by means of new and advanced destabilization protocols the efficiency of new chemistry environmentally friendly (yellow) demulsifiers with already commercially available red demulsifiers in destabilizing ... -
Equilibrium Partitioning of Naphthenic Acid Mixture Part 2: Crude Oil-Extracted Naphthenic Acids
Bertheussen, Are; Simon, Sebastien Charles; Sjøblom, Johan (Journal article; Peer reviewed, 2018)Crude oil naphthenic acids can partition into the water phase during oil production. Variations in production parameters such as temperature, pressure, pH, and water cut affect partitioning. In a previous article, a method ... -
Equilibrium Partitioning of Naphthenic Acid Mixture, Part 1: Commercial Naphthenic Acid Mixture
Bertheussen, Are; Simon, Sebastien Charles; Sjøblom, Johan (Journal article; Peer reviewed, 2018)Crude oil contains naphthenic acids that can partition into water. This phenomenon is a function of several parameters, such as the naphthenic acid composition, pH, and water phase salinity. This article is a continuation ... -
Equilibrium partitioning of naphthenic acids and bases and their consequences on interfacial properties
Bertheussen, Are; Simon, Sebastien Charles; Sjøblom, Johan (Journal article; Peer reviewed, 2017)This article aims to create a model to accurately predict the equilibrium partitioning of naphthenic acids and basic crude oil components between the oil and water phase. The model was tested on 2 acids and 2 bases. After ... -
Evaluation of anti-agglomerate hydrate inhibitor in water-in-crude oil emulsions of different water cut
Kolotova, Daria; Derkach, Svetlana; Simon, Sebastien Charles; Sjøblom, Johan; Donaldson, Tracy; Hase, Alfred (Peer reviewed; Journal article, 2020)A commercially available anti-agglomerant (AA) was evaluated in water-in crude oil (W/CO) emulsions at different water cut. The injection of an AA to an emulsion affects the induction time and rate of hydrate formation. ... -
Experimental evidence of enhanced adsorption dynamics at liquid-liquid interfaces under electric field
Mhatre, Sameer; Simon, Sebastien Charles; Sjøblom, Johan (Journal article; Peer reviewed, 2020)In this work we investigate adsorption of surface active compounds at water-oil interface subjected to an electric field. A fluid system comprising a pendent water drop surrounded by an asphaltene-rich organic phase is ... -
High-Temperature Core Flood Investigation of Nanocellulose as a Green Additive for Enhanced Oil Recovery
Aadland, Reidun Cecilie Grønfur; Jakobsen, Trygve Dagsloth; Heggset, Ellinor Bævre; Long-Sanouiller, Haili; Simon, Sebastien Charles; Paso, Kristofer Gunnar; Syverud, Kristin; Torsæter, Ole (Journal article; Peer reviewed, 2019)Recent studies have discovered a substantial viscosity increase of aqueous cellulose nanocrystal (CNC) dispersions upon heat aging at temperatures above 90 °C. This distinct change in material properties at very low ... -
Influence of Asphaltenes on Gelation of Tetrameric Acid with Calcium Ion at the Oil/Water Interface under Flow-Model Condition
Simon, Sebastien Charles; Gao, Bicheng; Tofte, Sondre; Sjøblom, Johan; Passade-Boupat, Nicolas; Palermo, Thierry; Rondon-Gonzalez, Marianna (Peer reviewed; Journal article, 2020)The first step in calcium naphthenate deposition is supposed to be the formation of an interfacial gel by cross-linking between ARN tetrameric acid and Ca2+. Several aspects of the inhibition of the interfacial gel formation ... -
Influence of Fatty-Alkylamine Amphiphile on the Asphaltene Adsorption/Deposition at the Solid/Liquid Interface under Precipitating Conditions
Subramanian, Sreedhar; Buscetti, Lola; Simon, Sebastien Charles; Sacré, Marion; Sjøblom, Johan (Journal article; Peer reviewed, 2018)The ability of a fatty-alkylamine amphiphile to inhibit asphaltene adsorption/deposition, as well as its ability to disperse the asphaltene layers on stainless steel, was studied using a quartz crystal microbalance with ... -
Influence of HPAM on W/O emulsion separation properties
Sjøblom, Johan; Dagsgård, Camilla Israelsen; Simon, Sebastien Charles; Sørland, Geir Humborstad; Hana, Morten (Journal article; Peer reviewed, 2017)The present study reports on the influence of partially hydrolyzed polyacrylamide (HPAM) on essential w/o emulsion properties. The characterization has been undertaken with low field NMR to follow droplet sizes and ... -
Influence of wax inhibitor molecular weight: Fractionation and effect on crystallization of polydisperse waxes
Ruwoldt, Jost; Kurniawan, Muh; Sørland, Geir; Simon, Sebastien Charles; Sjøblom, Johan (Journal article; Peer reviewed, 2019)The influence of wax inhibitor molecular weight on wax crystallization was investigated in three steps: (1) Wax inhibitor fractionation via stepwise precipitation or ultrasonic disintegration, (2) characterization of ... -
Inhibitor-wax interactions and PPD effect on wax crystallization: New approaches for GC/MS and NMR, and comparison with DSC, CPM, and rheometry
Ruwoldt, Jost; Sørland, Geir; Simon, Sebastien Charles; Oschmann, Hans-Jörg; Sjøblom, Johan (Journal article; Peer reviewed, 2019)Three pour point depressants (PPDs) with different chemistries, and extracted asphaltenes were studied in their influence on wax crystallization in a model system. A new procedure for nuclear magnetic resonance (NMR) was ... -
Interaction between asphaltenes and fatty-alkylamine inhibitor in bulk solution
Subramanian, Sreedhar; Simon, Sebastien Charles; Sjøblom, Johan (Journal article; Peer reviewed, 2018)In the present work, the mechanism of interaction between asphaltenes and a commercial fatty-alkylamine inhibitor was investigated by a combination of techniques. The “macro” properties, like the asphaltene precipitation ... -
Interactions between Asphaltenes and a Model Demulsifier in Bulk and at an Interface Studied by Small-Angle Neutron Scattering (SANS) and Neutron Reflectometry
Knudsen, Kenneth Dahl; Simon, Sebastien Charles; Geue, Thomas; Joshaniel F. K., Cooper; Sjøblom, Johan (Peer reviewed; Journal article, 2020)This article describes neutron reflectometry to probe the structure of the asphaltene layer adsorbed onto a hydrophilic silicon surface and the interactions between asphaltenes and a model demulsifier (pluronic). To start ... -
Interactions between Surfactants and Cellulose Nanofibrils for Enhanced Oil Recovery
Jakobsen, Trygve Dagsloth; Simon, Sebastien Charles; Heggset, Ellinor Bævre; Syverud, Kristin; Paso, Kristofer Gunnar (Journal article; Peer reviewed, 2018)Chemical enhanced oil recovery (EOR) represents a series of potential solutions for extracting more oil from resources with already known locations and magnitudes. Unfortunately, many of the chemical additives in use today ... -
Interactions of Polyaromatic Compounds. Part 1: Nanoaggregation Probed by Electrospray Ionization Mass Spectrometry and Molecular Dynamics Simulation
Liu, Lan; Zhang, Rongya; Wang, Xi; Simon, Sebastien Charles; Sjøblom, Johan; Xu, Zhenghe; Jiang, Bin (Journal article; Peer reviewed, 2017)Nanoaggregation of three synthetic polyaromatic compounds, N-(1-hexylhepyl)-N′-(5-carboxylicpentyl)-perylene-3,4,9,10-tetracarboxylicbisimide (C5Pe), N-(1-undecyldodecyl)-N′-(5-carboxylicpentyl)-perylene-3,4,9,10-tetraca ... -
Interactions of Polyaromatic Compounds. Part 2. Flocculation Probed by Dynamic Light Scattering and Molecular Dynamics Simulation
Wang, Xi; Zhang, Rongya; Liu, Lan; Qiao, Peiqi; Simon, Sebastien Charles; Sjøblom, Johan; Xu, Zhenghe; Jiang, Bin (Journal article; Peer reviewed, 2017)In part 1 of this series of papers, the results of electron spray ionization mass spectrometry (ESI-MS) and molecular dynamics (MD) simulation revealed a close relationship between nanoaggregation of polyaromatic (PA) ... -
Interfacial Dilational Rheology of Molecular Films in DC Electric Fields
Mhatre, Sameer; Simon, Sebastien Charles; Sjøblom, Johan (Journal article; Peer reviewed, 2022)We present a novel technique to measure the interfacial dilational rheology of a molecular film adsorbed at a water–oil interface in a direct-current (dc) electric field. A film of a highly polar subfraction of asphaltenes ... -
Interfacial dilational rheology properties of films formed at the oil/water interface by reaction between tetrameric acid and calcium ion
Subramanian, Sreedhar; Simon, Sebastien Charles; Sjøblom, Johan (Journal article; Peer reviewed, 2017)This article aims to determine the applicability of interfacial dilational rheology to study the formation of viscoelastic film at the oil/water interface by reaction between tetrameric acids ARN and calcium ions, and to ... -
Kinetics of Crystallization of Aqueous Droplets in Water-in-Crude Oil Emulsions at Low Temperatures
Derkash, S. R.; Kolotova, D.; Rodionova, Galina; Simon, Sebastien Charles; Sjøblom, Johan; Andrianov, A. V.; Malkin, A.Ya. (Journal article; Peer reviewed, 2018)This study focused on the examination of the isothermal crystallization of aqueous droplets in water-in-crude oil emulsions with water concentrations in the range of 5 to 20 wt %. Experiments were carried out using ...