Results 201 to 210 of about 23,867 (262)
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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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Asphaltene-Based Porous Carbon Nanosheet as Electrode for Supercapacitor
ACS Sustainable Chemistry and Engineering, 2018Asphaltene with high aromaticity derived from coal direct liquefaction residue is a favorable precursor to prepare new carbon materials because it is easy to polymerize or cross link.
Fangfang Qin +3 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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Interfacial behavior of asphaltenes
Advances in Colloid and Interface Science, 2016We review the existing literature on asphaltenes at various types of interfaces: oil-water, air-water, gas-oil and solid-liquid, with more emphasis on the oil-water interfaces. We address the role of asphaltene aggregation, recently clarified for asphaltenes in bulk by the Yen-Mullins model.
Dominique Langevin +1 more
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, 2020
The interfacially active asphaltenes (IAA, 1.75 wt % of the total asphaltenes) from Indonesian asphalt rocks have been proven to be the major component in stabilizing the water-in-oil (W/O) emulsio...
Xingang Li +5 more
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The interfacially active asphaltenes (IAA, 1.75 wt % of the total asphaltenes) from Indonesian asphalt rocks have been proven to be the major component in stabilizing the water-in-oil (W/O) emulsio...
Xingang Li +5 more
semanticscholar +1 more source
, 2017
For decades, discussion of asphaltene structure focused primarily on molecular weight. Now that it is widely accepted that asphaltene monomers are between ∼250 and 1200 g/mol, disagreement has turned to asphaltene architecture.
M. Chacón-Patiño +2 more
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For decades, discussion of asphaltene structure focused primarily on molecular weight. Now that it is widely accepted that asphaltene monomers are between ∼250 and 1200 g/mol, disagreement has turned to asphaltene architecture.
M. Chacón-Patiño +2 more
semanticscholar +1 more source