1887

Abstract

Summary

We implemented the pure shear wave reverse time migration algorithm, and adopted the compact difference scheme to suppress the numerical dispersion in order to adapt to the low-velocity characteristics of the shear wave. The depth domain pre-stack migration practice was performed for P-wave and SH shear wave seismic data in the Sanhu area of the Qaidam Basin in Qinghai Province of China. An eighth-order finite difference scheme was used for P-wave RTM on a variable grid, and a sixth-order CCD was used for SH shear wave RTM on a regular grid. The results showed that the SH shear wave results have obvious imaging advantages compared with the P-wave results in the gas-cloud region, which verified the accuracy of the SH shear wave RTM algorithm and demonstrated great potential in seismic imaging application.

© EAGE Publications BV
Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.202310722
2023-06-05
2026-02-12

  • From This Site

    /content/papers/10.3997/2214-4609.202310722
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. Dai, N.; Wu, W.; Zhang, W.; Wu, X.TTI RTM using variable grid in depth. Int. Petroleum Technology Conf.2011, v, 1–7.
     [Google Scholar]
  2. Du, Q.Z.; Zhu, Y.T.; Ba, J.Polarity reversal correction for elastic reverse time migration. Geophysics2012, 77, S31–S41.
     [Google Scholar]
  3. Deng, Z.; Li, C.; Chen, G. etc, The application of pure shear wave seismic data for gas reservoir delineation. 89th Annual International Meeting[C]. SEG, Expanded Abstracts, 2019
     [Google Scholar]
  4. Gou, L.; Zhang, S.; Li, X.Improving the Effectiveness of Shear-wave Seismic Exploration through Geophysical Technology Innovation. Pet. Sci. Technol. Forum2021, 40, 12–19.
     [Google Scholar]
  5. Li, X.; Zhang, S.Forty years of shear-wave splitting in seismic exploration: An overview. Geophys. Prospect. Pet.2021, 60, 190–209.
     [Google Scholar]
  6. Liu, H. F., Dai, N. X., et al, An explicit time evolution method for acoustic wave propagationGEOPHYSICS, VOL. 79, NO. 3; 117–124
     [Google Scholar]
  7. Shao, Z.; He, S.; Hou, L.; Wang, Y.; Tian, C.; Liu, X.; Zhou, Y.; Hao, M.; Lin, C.Dynamic Accumulation of the Quaternary Shale Biogas in Sanhu Area of the Qaidam Basin, China. Energies2022, 15, 4593
     [Google Scholar]
  8. Zhou, C.; Wu, W.; Sun, P.; Yin, W.; Li, X.The Combined Compact Difference Scheme Applied to Shear-Wave Reverse-Time Migration. Appl. Sci.2022, 12, 7047. https://doi.org/10.3390/app12147047
     [Google Scholar]
  9. Zhang, Q.; McMechan, G.A.2D and 3D elastic wavefield vector decomposition in the wavenumber domain for VTI media. Geophysics2010, 75, D13–D26.
     [Google Scholar]
  10. ZhangY, ZhangH. Z., Zhang, G. Q., A stable TTI reverse time migration and its implementation. 79th Annual International Meeting[C]. SEG, Expanded Abstracts, 2009: 2794–2798.
     [Google Scholar]
/content/papers/10.3997/2214-4609.202310722
Loading
Reverse Time Migration Imaging Using Pure Shear Wave Data
Conference Proceedings 2023, 1 (2023); https://doi.org/10.3997/2214-4609.202310722
/content/papers/10.3997/2214-4609.202310722
/content/papers/10.3997/2214-4609.202310722
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