Study of Viscosity-temperature Properties of Oil and Gas-condensate Mixtures in Critical Temperature Ranges of Phase Transitions

Transport of oil and gas-condensate mixtures of various compositions is found to be accompanied by a slight increase in viscosity in the coldest period when ground temperatures at depth of a condensate pipeline reach 0 – minus 4°С. Fall in temperature of oil fluids under study to minus 10 – minus 30...

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Bibliographic Details
Published in:Procedia chemistry 2014, Vol.10, p.343-348
Main Authors: Loskutov, V. Yu, Yadrevskaya, N.N., Yudina, N.V., Usheva, N.V.
Format: Article
Language:English
Subjects:
activation energy of viscous
gas-condensate
oil
oil and gas condensate mixture
viscosity-temperature properties
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Summary:Transport of oil and gas-condensate mixtures of various compositions is found to be accompanied by a slight increase in viscosity in the coldest period when ground temperatures at depth of a condensate pipeline reach 0 – minus 4°С. Fall in temperature of oil fluids under study to minus 10 – minus 30°С is accompanied by a sharp increase in all structural and rheological parameters of the mixture. Even a slight amount of oil added to a gas-condensate mixture causes a significant decrease in viscosity in the negative temperature range. As a result, cloud and pour point of a mixture falls, its amount decreases, the structure of paraffin deposits changes.
ISSN:1876-6196
1876-6196
DOI:10.1016/j.proche.2014.10.058