Published September 2026, Pg. 42-52
Section: Technique and technology of oil-gas production
UOT: 622.276(479.24)
DOI: 10.37474/0365-8554/2026-09-42-52
Impact of magnetic water treatment on oil displacement efficiency in heterogeneous reservoir model
A.V. Sultanova - Azerbaijan State Oil and Industry UniversityIn conditions of depletion of easily recoverable oil reserves and transition to development of hard-to-recover resources, the need to develop effective methods of increasing oil recovery increases.
One of the most common methods of reservoir pressure maintenance and oil displacement is waterflooding, the effectiveness of which is limited by reservoir heterogeneity, high permeability of individual zones, early water breakthrough, and the formation of stagnant areas.
In this regard, technologies aimed at modifying the properties of injected water are of particular interest.
Magnetic treatment of water is considered a promising area, capable of changing its physicochemical characteristics, including structure, surface tension, wettability of rocks and interfacial interactions in the water-oil-rock system.
It is assumed that these changes contribute to reducing capillary forces, improving filtration properties and increasing the completeness of oil displacement from the pore space. Additionally, magnetic impact can reduce the formation of inorganic deposits and affect the behavior of dissolved salts, which has a positive effect on the injection and operation of equipment.
Despite a significant amount of research, the mechanisms of the influence of magnetic water treatment on reservoir systems remain poorly understood, and the results of laboratory and field tests are often controversial.
This is due to the complexity of filtration processes in porous media and the dependence of the effect on the mineralogical composition of rocks, the properties of formation fluids and the parameters of the magnetic field.
This paper examines existing approaches to the use of magnetic water treatment in waterflooding of oil reservoirs, analyzes the expected impact mechanisms and evaluates the prospects for using this technology in oil production.
To evaluate the effectiveness of the method, an integrated experimental and analytical approach was applied, including filtration studies of the core, physical and chemical analysis of water and interpretation of the results from the standpoint of modern methods of increasing oil recovery.
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