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A numerical study of the effects of temperature and injection velocity on oil-water relative permeability for enhanced oil recovery.

Iyi, Draco; Balogun, Yakubu; Oyeneyin, Babs; Faisal, Nadimul

Authors

Draco Iyi

Babs Oyeneyin



Abstract

The paper quantitatively explore the influence of injection rate and temperature on oil-water relative permeability curves during hot water flooding operations in a porous medium flow. ANSYS-CFD was used to construct a numerical model of hot-water injection into an oil saturated sandstone core sample. The modelling technique is based on the Eulerian-Mixture model, using a 3D cylindrical core sample with known inherent permeability and porosity. Injection water at 20° C was injected into a core sample that was kept at 63 °C and had 14-mD permeability and 26% porosity. For the investigation, three distinct injection rates of 2.9410 - 6 m/s, 4.41 × 10-6 m/s, and 5.88 × 10-6 m/s were utilised. Furthermore, same injection procedures were repeated under the same conditions, but the core temperature was changed to 90 °C, allowing us to quantify the influence of temperature on the relative permeability curves of oil-water immiscible flow. The results of this study show that the relative permeability of oil is strongly influenced by flow, while the effect of the relative permeability of water is negligible. In addition, the flow rate influences the residual oil and water saturation, as well as the associated effective permeability. From 20 ° C to 90 °C there is little sensitivity to relative permeability or temperature. This study does not provide proof that temperature effects do not exist with genuine reservoir fluids, rocks, and temperature ranges. However, this study has demonstrated the feasibility of utilising CFD approaches to estimate fluid relative permeability, as well as the combined influence of temperature change and flow rate on relative permeability, with the potential for considerable cost-time advantages.

Citation

IYI, D., BALOGUN, Y., OYENEYIN, B. and FAISAL, N. 2022. A numerical study of the effects of temperature and injection velocity on oil-water relative permeability for enhanced oil recovery. International journal of heat and mass transfer [online], 191, article number 122863. Available from: https://doi.org/10.1016/j.ijheatmasstransfer.2022.122863

Journal Article Type Article
Acceptance Date Mar 25, 2022
Online Publication Date Apr 7, 2022
Publication Date Aug 1, 2022
Deposit Date Apr 4, 2022
Publicly Available Date Mar 29, 2024
Journal International journal of heat and mass transfer
Print ISSN 0017-9310
Electronic ISSN 1879-2189
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 191
Article Number 122863
DOI https://doi.org/10.1016/j.ijheatmasstransfer.2022.122863
Keywords Enhanced oil recovery; Relative permeability; Temperature effect; Injection rate; Multiphase computational fluid dynamics
Public URL https://rgu-repository.worktribe.com/output/1634954

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