Effect of Temperature on Asphaltene Precipitation in Crude Oils from Xinjiang Oilfield.

ABSTRACT: During the production of crude oil, asphaltenes are prone to precipitate due to the changes of external conditions (temperature, pressure, etc.). Therefore, a series of research studies were designed to investigate the effect of temperature on asphaltene precipitation for two Xinjiang crude oils (S1, S2) so as to reveal the mechanism of asphaltene dissolution. First, the changes of asphaltene precipitation were intuitively observed by using a microscope. The results demonstrated that the asphaltene solubility increased with the increase of temperature and the dispersion rate of asphaltene particles increased with the decrease of particle size. Second, the variation of asphaltene precipitation with temperature was quantified by a gravimetric method. The results suggested that the different

SUBMITTER: Li M 

PROVIDER: S-EPMC9583088 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature