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Asphaltene Characterization: Sensitivity of Asphaltene Properties to Extration Techniques
Canadian International Petroleum Conference, 2001Abstract One step in asphaltene extraction is to wash the precipitated asphaltenes with the precipitant to remove trapped resinous material. To assess the effect of washing on asphaltene properties, asphaltenes were extracted with three different degrees of washing.
H. Alboudwarej +3 more
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The Role of Asphaltene Solubility and Chemical Composition on Asphaltene Aggregation
Petroleum Science and Technology, 2003Abstract Asphaltenes from four different crude oils (Arab Heavy, B6, Canadon Seco, and Hondo) were fractionated in mixtures of heptane and toluene and analyzed by small angle neutron scattering (SANS). Fractionation appeared to concentrate the most polar species into the least soluble sub-fraction as indicated by elemental analysis.
Keith L. Gawrys +2 more
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A Mesoscopic Model for an Asphaltene and Complex Mixtures of Asphaltenes
Petroleum Science and Technology, 2015A representation for an asphaltene system and asphaltene mixtures is proposed based on experimental data reported by Socrates et al. These were modeled at the mesoscopic level by applying dissipative particle dynamics (DPD), where DPD beads correspond to the main structure that constitutes the real asphaltene fraction.
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Organic Geochemistry, 1984
Abstract Asphaltenes derived from both oil and source-rocks have been studied by pyrolysis-gas chromatography. The pyrograms obtained at 450 and 550°C show that asphaltene structure is very close to the structure of the kerogen of the same sample. They can be interpreted as kerogen moieties, resulting from its early evolution.
F. Behar, R. Pelet, J. Roucache
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Abstract Asphaltenes derived from both oil and source-rocks have been studied by pyrolysis-gas chromatography. The pyrograms obtained at 450 and 550°C show that asphaltene structure is very close to the structure of the kerogen of the same sample. They can be interpreted as kerogen moieties, resulting from its early evolution.
F. Behar, R. Pelet, J. Roucache
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Asphaltene and asphaltene precipitation/deposition
2021Ali Ghamartale +3 more
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The luminescence of asphaltenes
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 19701. The luminescence spectra of chloroform solutions of resins and asphaltenes, isolated from mazut, as well as components extracted from asphaltenes with petroleum ether, heptane, and benzene, were measured. 2. The luminescence of solutions of asphaltenes is due to the asphaltenes themselves, and not to resins that might have been ...
V. I. Kazakova, A. F. Koretskii
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Petroleum Science and Technology, 1998
ABSTRACT We report x-ray scattering measurements on asphaltenes and bitumen solutions, with attention to the concentrated regimes. We characterize the data in terms of a correlation length which is indicative of proximity to phase separation in a mixture, rather than the radius-of-gyration more indicative of individual colloids.
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ABSTRACT We report x-ray scattering measurements on asphaltenes and bitumen solutions, with attention to the concentrated regimes. We characterize the data in terms of a correlation length which is indicative of proximity to phase separation in a mixture, rather than the radius-of-gyration more indicative of individual colloids.
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1998
Asphaltenes have been studied extensively over the past 50–60 years.1–2 A number of experimental techniques have been employed. The simplest and most widely used technique is the measurement of the solubilities of isolated asphaltenes in various organic liquids, both aromatic solvents and flocculants like pentane.3–4 These studies yield valuable ...
Per Fotland, Hilde Anfindsen
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Asphaltenes have been studied extensively over the past 50–60 years.1–2 A number of experimental techniques have been employed. The simplest and most widely used technique is the measurement of the solubilities of isolated asphaltenes in various organic liquids, both aromatic solvents and flocculants like pentane.3–4 These studies yield valuable ...
Per Fotland, Hilde Anfindsen
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Canadian International Petroleum Conference, 2000
Introduction Production of heavy oils and paraffinic crude reserves often results in the deposition of organic solids, typically waxes or asphaltenes. The organic deposits can reduce the productivity of the reservoir as well as foul piping and surface equipment.
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Introduction Production of heavy oils and paraffinic crude reserves often results in the deposition of organic solids, typically waxes or asphaltenes. The organic deposits can reduce the productivity of the reservoir as well as foul piping and surface equipment.
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