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Crude Oil Analysis by Low-Field NMR Relaxometry
Salim Ok1, Marsel Fazlyyyakhmatov2,3
1Petroleum Research Center, Kuwait Institute for Scientific Research, Safat, Kuwait.
Magnetic Resonance in Chemistry : MRC
|March 15, 2026
Summary
Low-field nuclear magnetic resonance (LF-NMR) offers a rapid, non-destructive method for characterizing crude oil properties. This technique shows strong potential for improving petroleum analysis and flow assurance.
Area of Science:
- Petroleum Geochemistry
- Analytical Chemistry
- Materials Science
Background:
- Conventional ASTM methods for crude oil characterization are time-consuming and use toxic reagents.
- There is a need for faster, safer, and more efficient analytical techniques in the petroleum industry.
Purpose of the Study:
- To review recent advancements in applying Low-field Nuclear Magnetic Resonance (LF-NMR) relaxometry for crude oil analysis.
- To highlight the potential of LF-NMR in predicting crude oil properties and analyzing complex systems.
Main Methods:
- Summarizing recent literature on LF-NMR relaxometry applied to crude oils and their fractions.
- Discussing correlations between relaxation times, viscosity, density, and machine learning applications.
- Examining LF-NMR applications in crude oil emulsions and SARA analysis.
Main Results:
- LF-NMR relaxometry demonstrates strong correlations with viscosity and density.
- Machine learning enhances the predictive accuracy of crude oil properties using LF-NMR data.
- LF-NMR provides insights into droplet size, phase composition, and stability of crude oil emulsions.
- New LF-NMR approaches extend characterization to complex water-oil systems.
Conclusions:
- LF-NMR relaxometry is a versatile, rapid, and non-destructive tool for crude oil characterization.
- This technique has significant potential for both laboratory analysis and practical flow assurance in petroleum production.
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