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Investigation of Electrical Parameters of Fresh Water and Produced Mixed Injection in High-Salinity Reservoirs

Jun Li1, Guofeng Cheng2, Hongwei Xiao3, Xiang Li4, Lizhi Wang4, Hui Xu5,*, Yu Wang6, Nannan Liu5, Shangping Chen5, Xing Shi5

1 PetroChina Research Institute of Petroleum Exploration & Development, Beijing, 100083, China
2 Changqing Oilfield No.5 Oil Production Plant, PetroChina, Xi’an, 710000, China
3 Exploration and Development Research Institute of Daqing Oilfield Co., Ltd., Daqing, 163712, China
4 Key Laboratory of Shallow Geothermal Energy, Ministry of Natural Resources of the People’s Republic of China, Beijing, 100195, China
5 Jiangsu Key Laboratory of Oil-Gas Storage and Transportation Technology, School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou, 213164, China
6 Sinopec International Petroleum Exploration and Production Corporation, Beijing, 100029, China

* Corresponding Author: Hui Xu. Email: email

Fluid Dynamics & Materials Processing 2023, 19(10), 2695-2706. https://doi.org/10.32604/fdmp.2023.028115

Abstract

Assuming a reservoir with a typical salt-lake background in the Qaidam Basin as a testbed, in this study the variation law of the rock electrical parameters has been determined through water displacement experiments with different salinities. As made evident by the results, the saturation index increases with the degree of water injection. When the salinity of the injected water is lower than 80000 ppm, the resistivity of the rock sample first decreases, then it remains almost constant in an intermediate stage, and finally it grows, thereby giving rise to a ‘U’ profile behavior. As the salinity decreases, the water saturation corresponding to the inflection point of the resistivity becomes lower, thereby leading to a wider ‘U’ type range and a higher terminal resistivity. For different samples, higher initial resistivity of the sample in the oil-bearing state, and higher resistivity after low-salinity water washing are obtained when a thicker lithology is considered.

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Investigation of Electrical Parameters of Fresh Water and Produced Mixed Injection in High-Salinity Reservoirs

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APA Style
Li, J., Cheng, G., Xiao, H., Li, X., Wang, L. et al. (2023). Investigation of electrical parameters of fresh water and produced mixed injection in high-salinity reservoirs. Fluid Dynamics & Materials Processing, 19(10), 2695-2706. https://doi.org/10.32604/fdmp.2023.028115
Vancouver Style
Li J, Cheng G, Xiao H, Li X, Wang L, Xu H, et al. Investigation of electrical parameters of fresh water and produced mixed injection in high-salinity reservoirs. Fluid Dyn Mater Proc. 2023;19(10):2695-2706 https://doi.org/10.32604/fdmp.2023.028115
IEEE Style
J. Li et al., "Investigation of Electrical Parameters of Fresh Water and Produced Mixed Injection in High-Salinity Reservoirs," Fluid Dyn. Mater. Proc., vol. 19, no. 10, pp. 2695-2706. 2023. https://doi.org/10.32604/fdmp.2023.028115



cc Copyright © 2023 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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