1887

Abstract

Summary

The accuracy of nuclear magnetic resonance (NMR) logging data inversion directly affects the reliability of reservoir evaluation. Aiming at the problem of low reliability of T2 spectrum inversion from NMR data with a low signal-to-noise ratio (SNR), a hybrid denoising method based on empirical mode decomposition-singular value decomposition (EMD-SVD) is proposed to process NMR data before inversion. This method can not only effectively extract the trend component and avoid removing the useful signal in the high frequency signal, but also adaptively select the singular value for signal reconstruction through the singular value difference spectrum, which contains the advantages of the EMD and SVD methods. Numerical simulation experiments were performed to verify the effectiveness of the EMD-SVD method. The results show that the inverted T2 spectrum with the EMD-SVD denoising method is closer to the T2 model than that with the EMD denoising method and the SVD denoising method.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.202310346
2023-06-05
2026-02-12

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References

  1. Coates, G.R., Xiao, L.Z., Prammer, M.G., (1998). NMR Logging Principles and Applications. Halliburton energy services Sea Gulf Press.
     [Google Scholar]
  2. Nie, N., Bian, C., Li, L., (2022). “Adap-EMD: Adaptive EMD for Aircraft Fine-Grained Classification in Remote Sensing.” IEEE Geoscience and Remote Sensing Letters19: 1–5.
     [Google Scholar]
  3. Eksioglu, E.M., Bayir, O., (2014). “K-SVD Meets Transform Learning: Transform K-SVD.” IEEE Signal Processing Letters21 (3): 347–351.
     [Google Scholar]
  4. Jin, G.W., and Xie, R.H., et al. (2019). “Petrophysical Parameter Calculation Based on NMR Echo Data in Tight Sandstone.” IEEE Transactions on Geoscience and Remote Sensing57 (8): 5618–5625.
     [Google Scholar]
  5. Zhu, M., Liu, N., (2020). “Research on NMR Noise Reduction Method Based on Improved CEEMD.” IEEE Access8: 122864–122873.
     [Google Scholar]
  6. Zhao, X.Z., Ye, B.Y., (2011). “Selection of Effective Singular Values Using Difference Spectrum and Its Application to Fault Diagnosis of Headstock.” Mechanical Systems and Signal Processing25 (5): 1617–1631.
     [Google Scholar]
/content/papers/10.3997/2214-4609.202310346
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Nuclear Magnetic Resonance Data Denoising Based on EMD-SVD method
Conference Proceedings 2023, 1 (2023); https://doi.org/10.3997/2214-4609.202310346
/content/papers/10.3997/2214-4609.202310346
/content/papers/10.3997/2214-4609.202310346
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