Тип публикации: статья из журнала
Год издания: 2022
Идентификатор DOI: 10.3390/fluids7020059
Ключевые слова: nanofluids, oil recovery, oil recovery factor, particle size, vof method, water saturation
Аннотация: This article deals with the study of the initial water saturation effect of a porous medium on the oil recovery factor using a water-based nanosuspension. The initial water saturation of the porous medium in the computations varied within the range from 0 to 90%. The nanoparticle SiO2 concentration varied from 0 to 1 wt%. The partiПоказать полностьюcle sizes were equal to 5, 18, 22, and 50 nm. Experimentally measured wetting angles and the interfacial tension coefficient depending on the concentration and size of nanoparticles were used in computations. A mathematical model was developed, describing the transfer and diffusion of nanoparticles within the aqueous phase during immiscible displacement of oil by nanosuspension from a porous medium. Using the developed model, a systematic computational study of the effect of the initial water saturation of the core micromodel on the oil recovery factor using nanosuspension was carried out. It was revealed that with an increase in the initial water saturation, the oil recovery factor monotonically decreased in the case of displacement both by water and nanosuspension. It was shown that with an increase in the concentration of nanoparticles and a decrease in their size, the oil recovery factor increased. At that, the relative increase in the recovery factor had a maximum at an initial water saturation equal to 60%. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Журнал: Fluids
Выпуск журнала: Vol. 7, Is. 2
Номера страниц: 59
ISSN журнала: 23115521
Издатель: MDPI