Abstract

Aim of this work is increase accuracy of selection of formulations of acid compositions during acid treatments of bottom-hole zones of terrigenous reservoirs of producing wells by applying spectrophotometry method to assessing the quality of acid emulsions obtained.

Methodology for selecting necessary acid composition for processing bottom-hole zone of a producing well consists in an integrated approach and need for spectrophotometry. Before carrying out acid treatment, oil samples are taken from the candidate well. Further, in laboratory conditions, acid compositions of various concentrations are prepared, which form acid emulsions based on selected oil. A solution in toluene is prepared with initial oil and resulting acid compositions for further optical studies on a spectrophotometer with determination of optical density at various wavelengths. Mathematically, light absorption coefficient is calculated, graphical dependences on radiation wavelength are constructed, and a conclusion is drawn on possibility of using studied acid compositions.

Key words:

optical methods, spectrophotometry, acidic composition, acid emulsions, well stimulation, asphaltenes

References

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Authors

For citation:

A.A. Rybakov, V.D. Zimin, N.N. Sadykov Spektrofotometrija kak metod podbora kislotnyh sostavov dlja intensifikacii dobychi [Spectrophotometry as a method of selection of acidic compositions for well stimulation]. Neftyanaya Provintsiya, No. 2(22), 2020. pp.95-105. DOI https://doi.org/10.25689/NP.2020.2.95-105 (in Russian)