Abstract
The key to understanding many asphaltene-related phenomena is a quantitative description of the solubility conditions at which the least-soluble asphaltenes begin to flocculate from a crude oil, often referred to as the onset of flocculation. Models that treat asphaltene flocculation as a liquid–liquid phase separation of large solute molecules dispersed in a solvent composed of much smaller molecules can successfully describe experimental observations in which solubility conditions vary due to changes in pressure and composition. Formation of small, well-dispersed asphaltene aggregates of colloidal dimensions (on the order of nanometers) does not invalidate the thermodynamic approach to modeling asphaltene phase behavior.
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Buckley, J.S., Wang, J., Creek, J.L. (2007). Solubility of the Least-Soluble Asphaltenes. In: Mullins, O.C., Sheu, E.Y., Hammami, A., Marshall, A.G. (eds) Asphaltenes, Heavy Oils, and Petroleomics. Springer, New York, NY. https://doi.org/10.1007/0-387-68903-6_16
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DOI: https://doi.org/10.1007/0-387-68903-6_16
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