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Features of Temperature-Field Distribution in a Porous Reservoir Containing Non-Newtonian (Abnormal) Oil
| Title | Features of Temperature-Field Distribution in a Porous Reservoir Containing Non-Newtonian (Abnormal) Oil |
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| Authors | N. D. Morozkin1, V. V. Gallyamov1, N. N. Morozkin1 1Ul’yanovsk State Technical University |
| Annotation | The paper investigates the time-dependent temperature behaviour in the near-wellbore zone of a reservoir producing oil whose viscosity strongly depends on the pressure gradient. Such crudes are referred to as non-Newtonian (abnormal) oils because their flow is governed not by Darcy’s law but by a certain nonlinear filtration law. A single-temperature model is adopted, i.e. the temperatures of the reservoir fluid and of the rock matrix are assumed identical. Only natural production regimes (no external thermal or hydraulic stimulation) are considered. It is shown that, unlike Newtonian oil whose temperature near the wellbore increases monotonically with time, the temperature of a high-viscosity oil first rises, then falls, and after a certain period rises again. It is also demonstrated that this non-standard thermal behaviour of high-viscosity oil related to the evolution of the reservoir-structure degradation zone. |
| Keywords | high-viscosity oil, Darcy’s law, temperature, pressure, pressure gradient, porosity, density, reservoir destructuration zone. |
| Citation | Morozkin N. D., Gallyamov V. V., Morozkin N. N. ''Features of Temperature-Field Distribution in a Porous Reservoir Containing Non-Newtonian (Abnormal) Oil'' [Electronic resource]. Proceedings of the International Scientific Youth School-Seminar "Mathematical Modeling, Numerical Methods and Software complexes" named after E.V. Voskresensky (Saransk, July 29-31, 2025). Saransk: SVMO Publ, 2025. - pp. 176-179. Available at: https://conf.svmo.ru/files/2025/papers/paper35.pdf. - Date of access: 30.08.2025. |
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