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Effect of Asphaltenes on the Structure and Surface Properties of Wax Crystals in Waxy Oils
Energy & Fuels, 2019Asphaltenes, as the most polar component of crude oils, may interact with wax molecules during the wax crystallization, thus changing wax precipitation characteristics and wax crystal structure and affecting the gelation behavior of crude oils.
Huiyong Xue +5 more
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Solution Properties of Asphaltenes
Langmuir, 2008Ultracentrifugation has been used to produce asphaltene fractions of reduced polydispersity. The structure of these asphaltene fraction solutions has been investigated using viscosity and X-ray scattering (SAXS) measurements as a function of concentration.
Sébastien Simon +2 more
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Molecular-Level Characterization of Asphaltenes Isolated from Distillation Cuts
Energy & Fuels, 2019Asphaltenes challenge nearly all analytical techniques because of their immense polydispersity in molecular composition and structure. This operationally defined fraction of crude oil, insoluble in n-alkanes but soluble in aromatic solvents, is known to ...
A. McKenna +4 more
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Annual Review of Analytical Chemistry, 2011
Asphaltenes, the most aromatic of the heaviest components of crude oil, are critical to all aspects of petroleum utilization, including reservoir characterization, production, transportation, refining, upgrading, paving, and coating materials. The asphaltenes, which are solid, have or impart crucial and often deleterious attributes in fluids such as ...
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Asphaltenes, the most aromatic of the heaviest components of crude oil, are critical to all aspects of petroleum utilization, including reservoir characterization, production, transportation, refining, upgrading, paving, and coating materials. The asphaltenes, which are solid, have or impart crucial and often deleterious attributes in fluids such as ...
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Asphaltene Deposition: Development and Application of Polymeric Asphaltene Dispersants
Proceedings of SPE Annual Technical Conference and Exhibition, 1991ABSTRACT Asphaltene deposition has a significant detrimental effect on oilfield production. The key to effective treatment of asphaltene deposition is recognition of the problem. Asphaltenes can be identified and quantified using laboratory methods.
S.S. Schantz, W.K. Stephenson
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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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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.
J. Roucache, R. Pelet, Françoise Behar
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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.
J. Roucache, R. Pelet, Françoise Behar
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Study on inhibition behaviors of asphaltene inhibitor to asphaltene aggregations
Journal of Dispersion Science and Technology, 2021The changes in the stability of asphaltene in crude oil will give rise to its aggregation, coalescence and deposition from crude oil.
Pujiang Yang +5 more
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Proceedings of SPE Permian Basin Oil and Gas Recovery Conference, 2000
Abstract The work described in this paper has been conducted over several years under both laboratory and field conditions. Several field case histories and supporting laboratory observations are presented to substantiate the conclusions expressed.
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Abstract The work described in this paper has been conducted over several years under both laboratory and field conditions. Several field case histories and supporting laboratory observations are presented to substantiate the conclusions expressed.
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Asphaltenes: Definition, Properties, and Reactions of Model Compounds
Energy & Fuels, 2019The simple definition of asphaltenes—the material that dissolves in aromatic solvents and precipitates in normal alkanes—proved to be not very defining at all.
Ali H. Alshareef
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