Published February 2026, Pg. 32-37

Section: Technique and technology of oil-gas production

UOT: 622.276

DOI: 10.37474/0365-8554/2026-02-32-37

Increasing the efficiency of chemical formation stimulation

F.K. Kyazimov Cand. in Tech. Sc. - “Oil-Gas Scientific Research Project” Institute

To increase oil production at fields in the late stages of development, various artificial formation stimulation methods are used. Among these, chemical methods play a special role. The effectiveness of these methods depends on a number of factors, including the solubility of the reagents in sediment-free formation water, reducing the surface tension at the interface with the oil, increasing oil-washing capacity, increasing the pH of the solution, etc. Many years of experience show that, despite the development of numerous reagents and compositions aimed at enhancing oil recovery, the problem of their solubility in sediment-free formation water has not yet been resolved. In this article, based on laboratory and experimental studies, a composition soluble in formation water without sediment formation was developed. Its physicochemical properties and impact on oil displacement were studied. It was found that the developed composition is more effective in displacing residual oil from water-saturated formations than other reagents.

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