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

Lu Zhang; Lizhi Xiao; Wensheng Wu; Guangzhi Liao; Yan Zhang; Sihui Luo; Xinglong Lei

Magnetic Resonance Letters (Feb 2024)

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

Lu Zhang,
Lizhi Xiao,
Wensheng Wu,
Guangzhi Liao,
Yan Zhang,
Sihui Luo,
Xinglong Lei

Affiliations

Lu Zhang: National Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum, Beijing, 102249, China; College of Geophysics, China University of Petroleum, Beijing, 102249, China
Lizhi Xiao: National Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum, Beijing, 102249, China; College of Geophysics, China University of Petroleum, Beijing, 102249, China; Corresponding author. National Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum, Beijing, 102249, China.
Wensheng Wu: National Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum, Beijing, 102249, China; College of Geophysics, China University of Petroleum, Beijing, 102249, China
Guangzhi Liao: National Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum, Beijing, 102249, China; College of Geophysics, China University of Petroleum, Beijing, 102249, China
Yan Zhang: National Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum, Beijing, 102249, China; College of Geophysics, China University of Petroleum, Beijing, 102249, China
Sihui Luo: National Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum, Beijing, 102249, China; College of Geophysics, China University of Petroleum, Beijing, 102249, China
Xinglong Lei: PetroChina Huabei Oilfield Company, China National Petroleum Corporation, Renqiu, 062552, China

Journal volume & issue: Vol. 4, no. 1
p. 100085

Abstract

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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.

Published in Magnetic Resonance Letters

ISSN: 2097-0048 (Print); 2772-5162 (Online)
Publisher: KeAi Communications Co. Ltd.
Country of publisher: China
LCC subjects: Science: Chemistry: Physical and theoretical chemistry; Science: Chemistry: Analytical chemistry
Website: https://www.keaipublishing.com/en/journals/magnetic-resonance-letters/

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