Graphene-Ferrite Quantum Dots Nanohybrid Nanofluids: Stability, Density, and Application in Enhanced Oil Recovery
نویسندگان
1 Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Nigeria
2 Nanotechnology Research Group, Ladoke Akintola University of Technology, Nigeria
3 Department of Physics, School of Basic Sciences, Nigeria Maritime University, Nigeria
4 Department of Physical and Chemical Sciences, Federal University of Health Sciences, Ila-Orangun, Nigeria
5 Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Nigeria
6 Department of Physical and Chemical Sciences, Federal University of Health Sciences, Ila-Orangun, Nigeria
7 Department of Pure and Applied Physics, Ladoke Akintola University of Technology, Nigeria
8 Nanotechnology Research Group, Ladoke Akintola University of Technology, Nigeria
9 Department of Physical and Chemical Sciences, Federal University of Health Sciences, Ila-Orangun, Nigeria
10 Department of Mechanical Engineering, Usmanu Danfodiyo University of Sokoto, Nigeria
doi
10.48309/pcbr.2026.540797.1458چکیده
This study addresses the common challenges of nanoparticle agglomera-tion and low stability in nanofluids used for enhanced oil recovery (EOR). Graphene-ferrite quantum dots (G-FQDs) were synthesized and characterized using various techniques, and then dispersed in high-salinity brine at different concentrations. The G-FQDs nanofluids showed strong stability under harsh conditions and significantly re-duced oil-brine interfacial tension from 46.6 to 24.3 mN/m. More im-portantly, they caused a pronounced change in rock surface wettability from oil-wet to water-wet. This wettability alteration was found to be more crucial than interfacial tension reduction in improving oil recov-ery, even at very low G-FQDs concentrations. Overall, G-FQDs-based nanofluids appear to be a promising, and cost-effective method for en-hancing the mobility of residual oil in porous reservoirs.
