Published February 2024, Pg. 49-55

Section: Green energy

UOT: 620.93

DOI: 10.37474/0365-8554/2024-02-49-55

Van der Waals interaction of nanonized oil particles in a porous medium

E.Q. Shahbazov Dr. in Tech. Sc. - “Azerbaijan Oil Industry Journal”

S.A. Farzalizada - Baku Higher Oil School

T.E. Zeynalzada - Baku Higher Oil School

The article presents an analytical calculation of the van der Waals forces acting on oil by nanoparticles, which suggests their role in changing the rheological properties of oil and the subsequent transition to a new regime. The significance of accounting for intermolecular van der Waals forces is emphasized in the realm of shale oil production, elucidating the foundational principles of nanotechnological phenomena arising from the treatment of formations with metallic nanosystems, characterized by low concentrations and the perturbance effect. The results demonstrate a plane and sphere model for nanofluid behavior in porous media, especially between oil, reservoir particles and nanoparticles. The free energy associated with the non-retarded interactions of van der Waals forces is expressed through equations that exhibit a proportional relationship with the Hamaker number. Using addition rules for multicomponent systems, the study calculates Hamaker constants for the nano-oil model under consideration, demonstrating the superiority of nano-induced van der Waals forces compared to forces in porous media without the influence of nanosystems. In addition, based on experimental data from a study of the injection of a nanosolution into a formation, 5 models illustrating the relationships among surface tension, van der Waals pull-off force, and nanoparticle concentration to ensure the pragmatic essence of the tension minimization process.

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