Neftyanaya Provintsiya
electronic peer-reviewed scholarly publication
Neftyanaya provintsiya No. 2(42), 2025

Residual oil saturation and peculiar aspects of its determination

R.R. Khasanov
DOI: https://doi.org/10.25689/NP.2025.2.47-63

Abstract


Residual oil saturation factor is particularly important for estimation of oil reserves and creation of project documentation for oil fields development. The paper considers the main differences between the terms “residual oil” and “residual oil saturation”. Russian and foreign literature review is performed to investigate the challenges associated with determination of residual oil saturation using various methods: laboratory core studies, well logging techniques, analogy methods. Of these, only laboratory studies present a direct method for determination of residual oil saturation, which, according to expert opinion, is the most reliable, but not free of disadvantages. The results of studies aimed at determination of residual oil saturation versus rock properties are also discussed.

Key words:

displacement efficiency, residual oil, residual oil saturation, core studies, recoverable oil reserves

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Authors

R.R. Khasanov, PhD Student, Chair for Development and Operation of Oil and Gas Fields, Almetyevsk State University of Technology – Higher Petroleum School
2, Lenin Str., Almetyevsk, 423462, Russian Federation
E-mail: Khasanov@tatneft.ru

For citation:

R.R. Khasanov Ostatochnaya neftenasyshchennost i osobennosti ee opredeleniya [Residual oil saturation and peculiar aspects of its determination]. Neftyanaya Provintsiya, No. 2(42), 2025. pp. 47-63. DOI https://doi.org/10.25689/NP.2025.2.47-63. EDN VYITHC (in Russian)

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