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Strong Interference Elimination in Seismic Data Using Multivariate Variational Mode Extraction.

Zhichao Yu1, Yuyang Tan2, Yiran Lv1

  • 1Key Laboratory of Deep Petroleum Intelligent Exploration and Development, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China.

Sensors (Basel, Switzerland)
|November 27, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces multivariate variational mode extraction (MVME) to remove mechanical vibration interference from seismic data. The new method effectively suppresses noise, improving signal quality and analysis capabilities.

Keywords:
interference eliminationmechanical vibrationmultivariate variational mode extractionseismic data

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Area of Science:

  • Geophysics
  • Signal Processing

Background:

  • Seismic data often suffers from mechanical vibration and power facility interference, reducing signal-to-noise ratio (S/N).
  • Conventional noise suppression methods like notch filters and time-frequency transforms struggle with non-stationary interferences and can distort effective signals.

Purpose of the Study:

  • To develop an effective method for eliminating mechanical vibration interferences in seismic data.
  • To enhance the signal-to-noise ratio (S/N) and improve seismic signal analysis.

Main Methods:

  • Extended variational mode extraction (VME) to a multivariate form (MVME) for simultaneous analysis of multiple seismic traces.
  • Utilized synchrosqueezing-based time-frequency analysis to identify interference frequencies.
  • Applied MVME to extract and remove identified interference modes from seismic data using optimal balancing factors.

Main Results:

  • Demonstrated effectiveness using synthetic data, analyzing parameter influences.
  • Successfully applied the MVME method to field seismic datasets.
  • Achieved superior suppression of mechanical vibration interferences compared to conventional techniques.

Conclusions:

  • The proposed MVME method significantly improves S/Ns in seismic data.
  • MVME enhances the polarization analysis of seismic signals.
  • This technique offers a robust solution for processing seismically contaminated data.