Browsing NTNU Open by Author "Øye, Gisle"
Now showing items 1-20 of 58
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Adsorption of crude oil components at mineral surfaces followed by quartz crystal micro-balance and contact angle measurements: The effect of oil composition, simulated weathering and dispersants
Farooq, Umer; Nourani, Meysam; Ivol, Flavien; Årrestad, Anne Bjerke; Øye, Gisle (Journal article; Peer reviewed, 2019)Improved knowledge of interactions between crude oil and solid surfaces is of great importance for understanding oil spill responses as well as oil spill behavior on land and in the near-shore environment. Here, the goal ... -
Alterations in paraffin wax crystal networks induced by asphaltenes and pour point depressants, investigated by atomic force microscopy
Savulescu, George-Claudiu; Rücker, Maja; Simon, Sebastien Charles Roger; Øye, Gisle (Peer reviewed; Journal article, 2024)Wax crystallization in pipelines in cold environments is a key factor affecting flow assurance during crude oil production. Polar crude oil components, such as asphaltenes, and polymeric pour point depressants (PPDs) have ... -
Amino-functionalized iron oxide nanoparticles designed for adsorption of naphthenic acids
Simonsen, Galina; Strand, Mikael; Norrman, Jens; Øye, Gisle (Journal article; Peer reviewed, 2019)Amino-functionalized silica-coated iron oxide (Fe3O4/SiO2 NH2/C18) magnetic nanoparticles were synthesized, and amino-surface modification was performed with a high-pressure autoclave experiment and newly developed reflux ... -
Characterization and assessment of wax and wax inhibitors systems in microfluidic oil-in-water coalescence experiments
Dudek, Marcin Jan; Ruwoldt, Jost; Øye, Gisle (Journal article; Peer reviewed, 2022)During produced water treatment, one of the key underlying phenomena affecting separation performance is coalescence between oil droplets. These processes can be affected by several factors, including chemical composition ... -
Colloid chemistry and experimental techniques for understanding fundamental behaviour of produced water in oil and gas production
Dudek, Marcin; Vik, Eilen Arctander; Aanesen, Svein Viggo; Øye, Gisle (Journal article; Peer reviewed, 2020)Due to increasing volumes of produced water and environmental concerns related to its discharge, water treatment has become a major challenge during the production of crude oil and natural gas. With continuously stricter ... -
Combined Influence of High Pressure and High Temperature on the Removal of Crude Oil from Water during Laboratory-Scale Gas Flotation
Piccioli, Martina; Gjelsten Larsen, Robert André; Dudek, Marcin Jan; Aanesen, Svein Viggo; Øye, Gisle (Journal article; Peer reviewed, 2023)Produced water (PW) is the major byproduct and the largest waste stream in petroleum production. Handling this water is a major issue in the oil industry. Gas flotation has proven to be an effective topside separation ... -
Development and Assessment of a Multi-Pipe Oil-Water Bulk Separator Concept for Subsea Applications
Skjefstad, Håvard Slettahjell (Doctoral theses at NTNU;2019:306, Doctoral thesis, 2019)Subsea produced water separation has emerged as a viable technology for tackling challenges arising from increased water production rates. Removing produced water at the seabed will free up topside capacity constrained ... -
Development of a microfluidic method to study enhanced oil recovery by low salinity water flooding
Saadat, Marzieh; Tsai, Peichun Amy; Ho, Tsai-Hsing; Øye, Gisle; Dudek, Marcin (Journal article; Peer reviewed, 2020)Microfluidics is an appealing method to study processes at rock pore scale such as oil recovery due to the similar size range. It also offers several advantages over the conventional core flooding methodology, for example, ... -
Dynamic wettability alteration for combined low salinity brine injection and surfactant flooding on silica surface
Nourani, Meysam; Tichelkamp, Thomas; Hosseinzade Khanamiri, Hamid; Johansen, Trine; Hov, Ingrid Karlsen; Gawel, Bartlomiej; Torsæter, Ole; Øye, Gisle (Peer reviewed; Journal article, 2020)Experimental results of dynamic contact angle measurements of low salinity brine and combined low salinity water and surfactant flooding (LSW–SF) on silica surface are presented in this study. Dynamic contact angle experiments ... -
Effect of Low-Molecular-Weight Alcohols on Emulsion Stabilization with Lignosulfonates
Ruwoldt, Jost; Øye, Gisle (Peer reviewed; Journal article, 2020)Lignosulfonates are biobased surfactants and specialty chemicals, which are described as water-soluble polyelectrolyte macromolecules that are generated during the sulfite pulping of lignocellulose biomass. Due to their ... -
Effect of Mechanical Recycling on the Hydrolytic Degradation of PLA used in Food Packaging
Solvoll, Anne Marthe (Master thesis, 2016)The demand for plastic continues to increase, and the search for sustainable solutions has become crucial for the large demand the world is facing today. The biopolymer polylactic acid (PLA) has generated special interest, ... -
The effect of upstream inlet choking and surfactant addition on the performance of a novel parallel pipe oil-water separator
Skjefstad, Håvard Slettahjell; Dudek, Marcin; Øye, Gisle; Stanko, Milan (Peer reviewed; Journal article, 2020)This paper reports the effect of inlet choking and addition of surfactant on the performance of a parallel pipe oil-water separator. These two issues can have a strong effect on oil-water separation in real hydrocarbon ... -
Emulsions in porous media from the perspective of produced water re-injection – A review
Azizov, Ilgar; Dudek, Marcin; Øye, Gisle (Peer reviewed; Journal article, 2021)During offshore production, it is typical to discharge produced water into the sea after treating it to a level that meets environmental regulations. A growth in the volumes of produced water and increasingly stringent ... -
Experimental investigation of droplet breakage in the oil-in-water emulsion in a stirred tank
Moon, Seok Ki (Master thesis, 2018)In the modern oil and gas industry, the amount of produced water becomes major issues as its production is increased, especially in the matured field. To dispose produced water to the sea or utilize it for re-injection ... -
Flocculation-on-a-chip: produced water studied by advanced microfluidic methods
Ullaland, Hanne Skudal (Master thesis, 2020)Produsert vann, bestående av dispergert olje, er et betydelig biprodukt fra oljeproduksjonen. Det er viktig å fjerne den dispergerte oljen fra det produserte vannet før det kan tømmes ut eller reinjiseres, og det produserte ... -
Gas Flotation for Subsea Produced Water Treatment - Development of a Method
Larsen, Robert André Gjelsten (Master thesis, 2022)I oljeutvinningsindustrien er produsert vann den største avfallsstrømmen målt i volum, og fraksjonene av vann til hydrokarboner som utvinnes fra oljebrønner har en tendens til å øke over tid. For å sikre riktig håndtering ... -
The influence of asphaltenes and pour point depressants on the paraffin wax crystallization investigated by nuclear magnetic resonance and atomic force microscopy
Savulescu, George-Claudiu (Doctoral theses at NTNU, 2024:67, Doctoral thesis, 2024)Wax crystallization in pipelines in cold environments is a key challenge for flow assurance during oil production. Pour point depressants have been used to delay wax crystallization and gelling, by modifying rheological ... -
The influence of divalent cations on the dynamic surface tension of sodium dodecylbenzenesulfonate solutions
Dudek, Marcin Jan; Jektvik Olsen, Arnt Ove; Øye, Gisle (Peer reviewed; Journal article, 2023)The kinetics of surfactant adsorption at interfaces is crucial in many industrial settings. Maximum bubble pressure tensiometry allows accessing the adsorption at time scales of tens of ms to uncover the initial stages of ... -
Influence of the Crude Oil and Water Compositions on the Quality of Synthetic Produced Water
Dudek, Marcin; Kancir, Eugènie; Øye, Gisle (Journal article; Peer reviewed, 2017)Produced water originates from crude oil production. It is a mixture of organic and inorganic compounds, and its composition is highly oilfield-dependent. The present study was carried out to increase the understanding of ... -
INJECTION OF SYNTHETIC PRODUCED WATER INTO POROUS MEDIA - A study of transport of dispersed components through simulated reservoir packs
Joseph, Prajin (Master thesis, 2018)Produced water(PW) contributes to the largest volume byproduct from the oil production industry. The presence of hazardous chemicals makes the handling of PW an important and costly operation. Methods such as discharge ...