نوع مقاله : مقاله پژوهشی
نویسندگان
1 هیات علمی دانشگاه علم و صنعت ایران
2 دانشکده مهندسی شیمی، نفت و گاز. دانشگاه سمنان. ایران
3 دانشگاه سمنان
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
When the combination of salinity water, surfactants and Nanoparticles (NPs) are used simultaneously, the interfacial tension (IFT) could reach its lowest value and subsequently the oil recovery could be improved. In this paper, the method of modified metal oxide NPs with environmentally friendly surfactant dispersed in different base fluids was applied. Silica and gamma-alumina NPs and their hybrid nanofluids (HNFs) were used with mass ratios of 10:90, 30:70 and 50:50. Also, distilled water and various smart waters with salinities (41710, 20400, 8142, 4171) ppm were considered as basic fluids. The presence of Ca2+ and Mg2+ ions in salinity water creates amphoteric properties in HNFs, which greatly causes the instability of nanomaterials in the vicinity of saline water. Therefore, in order to be more stable, gum arabic was used as a green surfactant. After evaluating the duration of stability of HNFs, IFT was tested at temperatures (25 and 60) ℃ and viscosity at temperatures (25, 35, 45 and 55) ℃. On the other hand, the results showed that an increase at temperature could lead to a decrease at IFT and viscosity for nanofluids. The lowest IFT at 60℃ was obtained for the HNFs with a mass ratio of gamma-alumina and silica of 50:50 dispersed in smart water with a salinity of 4171 ppm. The lowest viscosity at 55℃ was reported for HNFs with a mass ratio of 50:50 dispersed in distilled water. Minimizing the IFT and improving the rheological behavior of optimal nanofluids towards a strong water wet system could be considered as a promising solution in EOR applications.
کلیدواژهها [English]
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