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A new approach in reverse time migration for properly imaging complex geological media

  • Research Article - Applied Geophysics
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Abstract

Reverse time migration (RTM) artifacts usually start to appear in large reflection angles which include a wide-angle range. On the other hand, the only proposed starting reflection angle for RTM artifacts is 60 degrees which is not based on a proven investigation and it seems to be just a suggestion based on trial and error. As an important issue, we determine a predominant starting reflection angle (PSRA) for RTM artifacts which enables us to suppress artifacts properly. Therefore, first we try to open and discuss some issues from a new fundamentally perspective about the number of cross-correlations (NOCC) and its relationship with RTM amplitude and artifacts at reflection and nonreflection points. Second, the cross-correlation and its related NOCC at each subsurface position form a new approach to determine PSRA for RTM artifacts. Using NOCC values, the reflection angle of 55 degrees was determined as PSAR at which the RTM artifacts often start to appear. Finally, a new imaging condition based on the down- and upgoing wave fields and a new weighting function were proposed to suppress RTM artifacts. The new imaging condition can maintain the desired information and suppress artifacts properly for the angle domain of 55° to 90°. A key point in the suppressing process is the direct relationship between reflection angle and artifact production where each reflection angle in the domain of 55° to 90° can produce a different amount of artifacts. Therefore, the proposed imaging condition is able to designate a suitable weight for each reflection angle to properly maintain the desired amplitude and suppress artifacts.

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References

  • Araujo ES, Pestana RP, dos Santos AWG (2014) Symplectic scheme and the poynting vector in reverse-time migration. Geophysics 79(5):1–10

    Article  Google Scholar 

  • Baysal E, Kosloff DD, Sherwood JWC (1983) Reverse-time migration. Geophysics 48:1514–1524

    Article  Google Scholar 

  • Billette FJ, Brandsberg-Dahl S (2005) The 2004 BP velocity benchmark: 67th annual EAGE meeting. EAGE, Expanded abstracts, p B305

    Google Scholar 

  • Claerbout, JF (1985), imaging the earth’s interior: Blackwell Scientific Publications.

  • Costa JC, Silva FA, Alcantara MR, Schleicher J, Novais A (2009) Obliquity-correction imaging condition for reverse time migration. Geophysics 74(3):57–66

    Article  Google Scholar 

  • Etgen J, Gray SH, and Zhang Y, (2009) An overview of depth imaging in exploration geophysics: Geophysics, 74(6):WCA5–WCA17.

  • Fernandez, AB, (2010), Subsalt seismic imaging illumination study, M.Sc. thesis. University of Houston.

  • Liu F, Zhang G, Morton SA, Leveille JP (2011) An effective imaging condition for reverse-time migration using wavefield decomposition. Geophysics 76:S29–S39

    Article  Google Scholar 

  • Liu S, Yan Z, Gu H, Tang Y, Liu C (2019) Imaging artefacts of artificial diving waves in reverse time migration: cause analysis in the angle domain and an effective removal strategy. Geophys Prospect 67:496–507

    Article  Google Scholar 

  • McMechan GA (1983) Migration by extrapolation of time-dependent boundary values. Geophys Prospect 31:413–420

    Article  Google Scholar 

  • Moradpouri F, Moradzadeh A, Pestana RC, Soleimani Monfared M (2017a) An improvement in RTM method to image steep dip petroleum bearing structures and its superiority to other methods. J Mining Environ 8(4):573–578

    Google Scholar 

  • Moradpouri F, Moradzadeh A, Pestana RC, Ghaedrahmati R, Soleimani Monfared M (2017b) An improvement in wavefield extrapolation and imaging condition to suppress reverse time migration artifacts. Geophysics 82:S403–S409

    Article  Google Scholar 

  • SMAART JV Consortium, (2001), Sigsbee2A model by Subsalt Multiple Attenuation And Reduction Technology Joint Venture.

  • Whitmore DN (1983) Iterative depth imaging by back time propagation: 53rd annual international meeting. SEG, Expanded abstracts, pp 382–385

    Google Scholar 

  • Yan, R, (2013), Acoustic and elastic reverse-time migration: novel angle-domain imaging conditions and applications. PhD thesis, University of California.

  • Yoon K, Marfurt K (2006) Reverse-time migration using the Poynting vector. Explor Geophys 37:102–107

    Article  Google Scholar 

  • Yoon K, Marfurt K, Starr EW (2004) Challenges in reverse-time migration: 74th Annual International Meeting. SEG, Expanded Abstracts, pp 1057–1060

    Google Scholar 

  • Zhang Y, Xu S, Tang B, Bai B, Huang Y, Huang T (2010) Angle gathers from reverse time migration. Lead Edge 29(11):1364–1371

    Article  Google Scholar 

  • Zhang D, Fei TW, Luo Y (2018) Improving reverse time migration angle gathers by efficient wavefield separation. Geophysics 83:S187–S195

    Article  Google Scholar 

  • Zheng Y, Wang Y, Chang X (2018) 3D forward modeling of upgoing and downgoing wavefields using Hilbert transform. Geophysics 83:F1–F8

    Article  Google Scholar 

Download references

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Authors and Affiliations

  1. Department of Mining Engineering, Faculty of Engineering, Lorestan University, Khoramabad, Iran

    Farzad Moradpouri

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  1. Farzad Moradpouri
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Correspondence to Farzad Moradpouri.

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Communicated by Michal Malinowski (CO-EDITOR-IN-CHIEF)/Sanyi Yuan (ASSOCIATE EDITOR).

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Moradpouri, F. A new approach in reverse time migration for properly imaging complex geological media. Acta Geophys. 69, 529–538 (2021). https://doi.org/10.1007/s11600-021-00565-x

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  • DOI: https://doi.org/10.1007/s11600-021-00565-x

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