Neftyanaya Provintsiya
ISSN 2412-8910 (Online)
electronic peer-reviewed scholarly publication
No. 2(38), 2024
Neftyanaya provintsiya No. 2(38), 2024

Application of rheological relationships in studying oil phase transition processes

V.M. Khusainov, О.S. Sotnikov, А.Kh. Kabirova, А.А. Pimenov
DOI: https://doi.org/10.25689/NP.2024.2.272-282

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Abstract


The paper discusses application of heavy oil rheological relationships at various temperatures to define the temperature of structural phase transition. Oil phase transitions are attributed to abnormal viscous properties of oil from Tatarstan fields. Oil viscosity mainly depends on its composition and pressure-and-temperature conditions. Decrease in oil temperature can cause paraffin crystallization and asphaltene coagulation. Oil behavior is characterized as one of a non-Newtonian fluid. Rheological relationships, such as flow curves, indicate the point where phase transition starts, as significant change in rheological properties is observed in this point. Bingham model considering viscoplastic properties of oil was used to analyze rheology data and to determine phase transition temperature. A reservoir in the Bobrikovian horizon (Republic of Tatarstan) was selected as a target for research.

Key words:

rheology, oil viscosity, asphaltenes, resins, paraffins, phase transition, development, temperature, flow curves

References

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Authors

V.M. Khusainov, Dr.Sc, Lead Researcher, Formation Evaluation and Well Test Department, TatNIPIneft Institute – PJSC TATNEFT
186a, Sovetskaya Str., Almetyevsk, 423458, Russian Federation
E-mail: khusainov@tatnipi.ru

O.S. Sotnikov, PhD, Head of Formation Evaluation and Well Test Department, TatNIPIneft Institute – PJSC TATNEFT
186a, Sovetskaya Str., Almetyevsk, 423458, Russian Federation
E-mail: sotnikov@tatnipi.ru

A.Kh. Kabirova, PhD, Senior Researcher, Formation Evaluation and Well Test Department, TatNIPIneft Institute – PJSC TATNEFT
186a, Sovetskaya Str., Almetyevsk, 423458, Russian Federation
E-mail: ahkabirova@tatnipi.ru

A.A. Pimenov, Dr.Sc, Director of TatNIPIneft Institute – PJSC TATNEFT
186a, Sovetskaya Str., Almetyevsk, 423458, Russian Federation
E-mail: PimenovAndreyA@tatnipi.ru

For citation:

V.M. Khusainov, О.S. Sotnikov, А.Kh. Kabirova, А.А. Pimenov Primeneniye reologicheskikh zavisimostey v issledovanii protsessov fazovykh perekhodov nefti [Application of rheological relationships in studying oil phase transition processes]. Neftyanaya Provintsiya, No. 2(38), 2024. pp. 272-282. DOI https://doi.org/10.25689/NP.2024.2.272-282. EDN IXLOHJ (in Russian)

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