1887

Abstract

Summary

Common-image gathers (CIGs) are an essential and practical tool for migration velocity analysis. The extended-domain CIGs usually cost significant computational and memory resources since they require computing higher dimensional images. Plane-wave CIGs require less computational cost and memory storage as they are directly calculated from the pre-stack plane-wave migration, but they usually suffer from the aliasing and crosstalk artifacts. We propose a new dip-constrained pseudo angle common-image gather. These new CIGs almost have the equivalent computational cost to the plane-wave CIGs, because they do not require extended images computation. Meanwhile, it dramatically enhances the quality of the plane-wave CIGs via three techniques including structure-oriented smoothing, vector median filter and pseudo angle. Our numerical tests validate that this method can provide more robust and high-quality residual moveouts compared with the plane-wave CIGs.

© EAGE Publications BV
Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.202510504
2025-06-02
2026-02-09

  • From This Site

    /content/papers/10.3997/2214-4609.202510504
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. Guo, B. and Schuster, G.T. [2017]. Wave-equation migration velocity analysis using plane-wave common-image gathers. Geophysics, 82(5), S327–40.
     [Google Scholar]
  2. Li, Y., and Chauris, H. [2018]. Coupling direct inversion to common-shot image-domain velocity analysis. Geophysics, 83(5), R497–R514.
     [Google Scholar]
  3. Xu, S., Zhang, Y., and Tang, B. [2011]. 3D angle gathers from reverse time migration. Geophysics, 76(2), S77–92.
     [Google Scholar]
  4. Rickett, J. E. and Sava, P. [2002]. Offset and angle-domain common image-point gathers for shot-profile migration. Geophysics, 67, 883–889.
     [Google Scholar]
  5. Sava, P. and Fomel, S. [2006]. Time-shift imaging condition in seismic migration. Geophysics, 71(6), S209–S217.
     [Google Scholar]
  6. Liu, L. [2019]. Improving seismic image using common-horizon panel. Geophysics, 84(5), S449–S458.
     [Google Scholar]
  7. Hale, D. [2009] Structure-oriented smoothing and semblance. CWP report, 635, 261–270.
     [Google Scholar]
  8. Liu, Y., Luo, Y., Wang, Y. [2009]. Vector median filter and its applications in geophysics. 79th SEG Annual International Meeting, Expanded Abstracts, 3342–3346.
     [Google Scholar]
  9. Sun, H., [2016]. Residual moveout estimation through least squares inversion. United States patent, 9,482,770.
     [Google Scholar]
/content/papers/10.3997/2214-4609.202510504
Loading
Dip-Constrained Pseudo Angle Common-Image Gather
Conference Proceedings 2025, 1 (2025); https://doi.org/10.3997/2214-4609.202510504
/content/papers/10.3997/2214-4609.202510504
/content/papers/10.3997/2214-4609.202510504
Loading

Data & Media loading...

Most Cited This Month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error