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Fluid phase behavior of heavy oil–multicomponent and multiphase fluid mixtures

Developments in Petroleum Science, ISSN: 0376-7361, Vol: 73, Page: 175-205
2021
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Book Chapter Description

This chapter addresses the phase behavior of heavy crude oil and multicomponent and multiphase fluid mixtures. First, for a hybrid thermal–noncondensable gas (NCG) process, the pressure–volume–temperature (PVT) behavior of a heavy oil-NCG mixture is experimentally studied. Correlations for the PVT behavior of the heavy oil-NCG mixture are discussed. Second, for a hybrid thermo-solvent process, the behavior and mechanisms of solvent extraction and asphaltene precipitation are discussed. A mathematical modeling method for the phase behavior of a heavy oil–solvent mixture is investigated. Third, for a hybrid thermochemical process, the mixture viscosity and interfacial tension between heavy oil and a chemical additive are studied and a systematic method is proposed to evaluate oil viscosity reduction. Moreover, emulsification between crude oil and chemical additives is discussed.

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