Numerical study of the mechanisms of enhanced oil recovery using nanosuspensions

The results of the numerical study of oil recovery enhancement using nanosuspension are presented. The research was carried out using the volume of fluid method (VOF) for a 2D microporous core model. Experimentally measured values of interfacial tension (IFT) and the contact angle (CA) were used for...

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Bibliographic Details
Published in:Theoretical and computational fluid dynamics 2021-08, Vol.35 (4), p.477-493
Main Authors: Minakov, A. V., Pryazhnikov, M. I., Zhigarev, V. A., Rudyak, V. Y., Filimonov, S. A.
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Computational Science and Engineering
Contact angle
Displacement
Engineering
Engineering Fluid Dynamics
Enhanced oil recovery
Flooding
Mathematical analysis
Mathematical models
Nanofluids
Nanoparticles
Oil recovery
Original Article
Petroleum mining
Silicon oxides
Surface tension
Two dimensional models
Viscosity
Wettability
Wetting
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Summary:The results of the numerical study of oil recovery enhancement using nanosuspension are presented. The research was carried out using the volume of fluid method (VOF) for a 2D microporous core model. Experimentally measured values of interfacial tension (IFT) and the contact angle (CA) were used for numerical modeling. An aqueous suspension with silicon oxide nanoparticles (5 nm) is used. It was shown that when 1 wt% of nanoparticles are added to the displacing liquid, its density increases by about 1%, the viscosity increases by 10%, the IFT decreases by 10%, and the contact angle increases from 70 to 145 ∘ . The results of numerical study showed that the injection of nanoparticles has a significant effect on the displacement front movement in the microporous model. It has been shown that the nanosuspension can increase the oil recovery factor (ORF) almost twice as compared to water. To clarify the mechanisms of increasing the oil recovery during the reservoir flooding with nanofluid, a systematic study of factors affecting the displacement process efficiency was carried out. Viscosity, interfacial tension and the wetting angle of the displacing fluid were considered as such factors. As a result of systematic research, it has been shown that the main factor affecting the increase in the oil recovery flooding of nanosuspensions is a variation of wettability.
ISSN:0935-4964
1432-2250
DOI:10.1007/s00162-021-00569-9