A study on the temperature sensitivity of NMR porosity in porous media based on the intensity of magnetization

The measurement of nuclear magnetic resonance (NMR) porosity is affected by temperature. Without considering the impact of NMR logging tools, this phenomenon is mainly caused by variations in magnetization intensity of the measured system due to temperature fluctuations and difference between the te...

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Bibliographic Details
Published in:Magnetic resonance letters 2024-02, Vol.4 (1), p.100085, Article 100085
Main Authors: Zhang, Lu, Xiao, Lizhi, Wu, Wensheng, Liao, Guangzhi, Zhang, Yan, Luo, Sihui, Lei, Xinglong
Format: Article
Language:English
Subjects:
Intensity of magnetization
NMR porosity
Porous media
Temperature
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Summary:The measurement of nuclear magnetic resonance (NMR) porosity is affected by temperature. Without considering the impact of NMR logging tools, this phenomenon is mainly caused by variations in magnetization intensity of the measured system due to temperature fluctuations and difference between the temperature of the porous medium and calibration sample. In this study, the effect of temperature was explained based on the thermodynamic theory, and the rules of NMR porosity responses to temperature changes were identified through core physics experiments. In addition, a method for correcting the influence of temperature on NMR porosity measurement was proposed, and the possible factors that may affect its application were also discussed. Peer review under responsibility of Innovation Academy for Precision Measurement Science and Technology (APM), CAS. [Display omitted]
ISSN:2772-5162
2772-5162
DOI:10.1016/j.mrl.2023.06.002