<p>Converted-wave static correction is a critical step in multicomponent seismic exploration, and its accuracy directly impacts the reliability of subsequent data processing and interpretation. The static correction for converted waves comprises the P-wave static correction at the source point and the S-wave static correction at the receiver point. The former can be derived from conventional P-wave static correction methods during P-wave processing. Consequently, the primary challenge in converted-wave static correction lies in determining the S-wave static correction at the receiver points. Currently, single static correction methods Iexhibit inherent limitations and specific applicability conditions, failing to completely resolve the converted-wave statics problem. To address this, this study proposes an integrated converted-wave static correction method that seamlessly combines multiple techniques to progressively estimate both the long-wavelength and Ishort-wavelength S-wave static corrections at the receiver points. Specifically targeting the “cycle-skipping” phenomenon observed in the conventional common-receiver-point stacked-trace correlation method, we introduce a non-equal-weight stacking technique to enhance the model trace, thereby improving the method’s effectiveness when applied to low signal-to-noise ratio (SNR) data. Processing results from real seismic datasets demonstrate that the integrated method effectively addresses the converted-wave static correction problem and holds significant practical value.</p>

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Integrated Converted-Wave Statics Correction Method Using Enhanced Model Traces with Applications

  • Hang Yuan,
  • Bolin Li

摘要

Converted-wave static correction is a critical step in multicomponent seismic exploration, and its accuracy directly impacts the reliability of subsequent data processing and interpretation. The static correction for converted waves comprises the P-wave static correction at the source point and the S-wave static correction at the receiver point. The former can be derived from conventional P-wave static correction methods during P-wave processing. Consequently, the primary challenge in converted-wave static correction lies in determining the S-wave static correction at the receiver points. Currently, single static correction methods Iexhibit inherent limitations and specific applicability conditions, failing to completely resolve the converted-wave statics problem. To address this, this study proposes an integrated converted-wave static correction method that seamlessly combines multiple techniques to progressively estimate both the long-wavelength and Ishort-wavelength S-wave static corrections at the receiver points. Specifically targeting the “cycle-skipping” phenomenon observed in the conventional common-receiver-point stacked-trace correlation method, we introduce a non-equal-weight stacking technique to enhance the model trace, thereby improving the method’s effectiveness when applied to low signal-to-noise ratio (SNR) data. Processing results from real seismic datasets demonstrate that the integrated method effectively addresses the converted-wave static correction problem and holds significant practical value.