Browsing NTNU Open by Author "Bertheussen, Are"
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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 ... -
Isolation, Characterization and Prediction of Calcium Naphthenates in High Acid Crude Oils
Bertheussen, Are (Master thesis, 2015)Calcium naphthenates in crude oil causes operational problems in refineries and lowers the market price for oil production companies. This Master s thesis aims to study the naphthenic acids who form calcium naphthenates ... -
Microfluidic tools for studying coalescence of crude oil droplets in produced water
Dudek, Marcin; Bertheussen, Are; Dumaire, Thomas; Øye, Gisle (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 ... -
Naphthenic acid solubility in produced water and their interactions with divalent cations
Bertheussen, Are (Doctoral theses at NTNU;2018:259, Doctoral thesis, 2018)To keep up with the growing energy demands, the production of high acid crudes is increasing worldwide. This acidity is mainly caused by a subgroup of resins called naphthenic acids. With the increased production and ...