Influences of asphaltene subfractions with different polarities on hydrate growth at water/oil interface

Zhang, Jie; Li, Chuanxian; Yang, Fei; Shi, Lei; Yao, Bo; Sun, Guangyu

doi:10.1016/j.fuel.2022.125546

Cited by 9 publications

(2 citation statements)

References 35 publications

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“…In experiments, organic solvents such as 1-methylnaphthalene, xylene, and toluene were commonly used to dissolve asphaltene. ,, Kerosene and n -alkanes were used as substitutes for saturated and aromatic hydrocarbons. ,, To prepare the base oil, kerosene and toluene were weighed at a mass ratio of 9:1. Then, the obtained asphaltene, resin, and wax, as detailed in Section 2.2 were added to the base oil to create three types of simulated oil.…”

Section: Methodsmentioning

confidence: 99%

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Synergistic Effect of Asphaltene, Resin, and Wax Improving the Emulsification and Interfacial Properties of a High-Phase-Inversion Thin Oil

He,

Pu,

Yang

et al. 2024

Langmuir

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Nowadays, high-phase-inversion in situ emulsification technology has shown great potential in enhancing oil recovery from high-water-cut thin-oil reservoirs. However, emulsification characteristics, interfacial properties, and the mechanism of high phase inversion have not been systematically described. In this study, an emulsification experiment was conducted to investigate the effects of shear time, shear rate, and temperature on the phase inversion of thin oil. Furthermore, the influence of resin and wax on the dispersion of asphaltene was studied through microscopic morphology analysis. Interfacial tension measurement and interfacial viscoelasticity analysis were carried out to determine the interaction characteristics of asphaltene, resin, and wax at the interface. The results showed that, at 50 °C, the phase-inversion point of thin oil reached as high as 75%, and even at 60 °C, it remained at 70%. The shear time and shear rate did not affect the phase-inversion point of thin oil, while an increase in temperature led to a decrease in the phaseinversion point. Moreover, compared to the 20% phase-inversion point of base oil, the phase-inversion point increased with different proportions of asphaltene, resin, and wax. Particularly, at the ratio of asphaltene/resin/wax = 1:5:9, the phase-inversion point reached as high as 80%, indicating the optimal state. In this proportion, asphaltene aggregates exhibited the smallest and most uniform size, best dispersion, lower interfacial tension, and higher interfacial modulus. These findings provide reference and guidance for further enhancing oil recovery in medium-to-high-water-cut thin-oil reservoirs.

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Section: Methodsmentioning

confidence: 99%

“…In experiments, organic solvents such as 1-methylnaphthalene, xylene, and toluene were commonly used to dissolve asphaltene. 78,80,81 Kerosene and n-alkanes were used as substitutes for saturated and aromatic hydrocarbons. 24,78,79 To prepare the base oil, kerosene and toluene were weighed at a mass ratio of 9:1.…”

Section: ■ Introductionmentioning

confidence: 99%

Synergistic Effect of Asphaltene, Resin, and Wax Improving the Emulsification and Interfacial Properties of a High-Phase-Inversion Thin Oil

He,

Pu,

Yang

et al. 2024

Langmuir

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show abstract

Research methods and devices for hydrate characteristics during oil and gas transportation: A review

Zhang,

Shi,

et al. 2024

Chinese Journal of Chemical Engineering

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Experimental study on the effect of high water cut on the emulsifying properties of crude oil

Yang³

2023

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Influences of asphaltene subfractions with different polarities on hydrate growth at water/oil interface

Cited by 9 publications

References 35 publications

Synergistic Effect of Asphaltene, Resin, and Wax Improving the Emulsification and Interfacial Properties of a High-Phase-Inversion Thin Oil

Synergistic Effect of Asphaltene, Resin, and Wax Improving the Emulsification and Interfacial Properties of a High-Phase-Inversion Thin Oil

Research methods and devices for hydrate characteristics during oil and gas transportation: A review

Experimental study on the effect of high water cut on the emulsifying properties of crude oil

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