1887
  1. Home
  2. Conferences
  3. Conference Proceedings
  4. 76th EAGE Conference and Exhibition 2014
  5. Conference paper

Abstract

Summary

In this paper, an efficient amplitude encoding scheme for time domain reverse time migration is presented. This scheme uses the orthogonal cosine basis as coding function. Similar to plane wave encoding, the physical meaning of this method is straightforward. This scheme can generate quality imaging result as common shot RTM but is more efficient and flexible than common shot RTM. Comparing to phase encoding based schemes, this scheme is easier to form super-shot in time domain. And phase encoding schemes is related to time shift, therefore RTM based on phase encoding scheme need time padding to avoid information loss which degrades efficiency. The proposed scheme does not need time padding.

Therefore it is more efficient than phase encoding based method, such as plane wave encoding and random phase encoding. Numerical examples demonstrate the feasibility of this method.

© EAGE Publications BV
Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.20141230
2014-06-16
2024-04-28

  • From This Site

    /content/papers/10.3997/2214-4609.20141230
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. GodwinJ. and SavaP.
    2010. Blended source imaging by amplitude encoding. SEG Technical Program Expanded Abstracts, 3125–3129.
     [Google Scholar]
  2. GodwinJ.
    2011. Blended source imaging by amplitude encoding. CWP-704.
     [Google Scholar]
  3. LiuF., HansonD.W., WhitmoreN.D., DayR.S. and StoltR.H.
    2006. Toward a unified analysis for source plane-wave migration. Geophysics71, S129–S139.
     [Google Scholar]
  4. RomeroL.A., GhigliaD.C., OberC.C. and MortonS.A.
    2000. Phase encoding of shot records in prestack migration. Geophysics65, 426–436.
     [Google Scholar]
  5. Soubaras. R.
    2006. Modulated-shot migration. SEG Technical Program Expanded Abstracts2430–2434.
     [Google Scholar]
  6. HuJ.T., WangX.W. and WangH.Z.
    2011. Frequency grouping coding scheme for blended source imaging. CPS/SEG Shenzhen 2011, International Geophysical Conference, Expanded Abstracts, ID:79.
     [Google Scholar]
  7. TangB. XuS. and ZhangY.
    2013. 3D angle gathers with plane-wave reverse-time migration. Geophysics78, S117–S123.
     [Google Scholar]
  8. WuB. Y, WuR. S. and GaoJ.H.
    2012. Time-space localized seismic wave propagation: Dreamlet prestack depth migration. Chinese J. Geophys.(in Chinese) 55, 3105–3114.
     [Google Scholar]
  9. ZhangY., SunJ. and GrayS.
    2007. Reverse time migration: amplitude and implementation issues. SEG Technical Program Expanded Abstracts2145–2149.
     [Google Scholar]
  10. ZhangY., SunJ., NotforsC., GrayS.H., ChernisL. and YoungJ.
    2005. Delayed-shot 3D depth migration. Geophysics70, E21–E28.
     [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20141230
Loading
An Efficient Amplitude Encoding Scheme for Reverse Time Migration
Conference Proceedings 2014, 1 (2014); https://doi.org/10.3997/2214-4609.20141230
/content/papers/10.3997/2214-4609.20141230
/content/papers/10.3997/2214-4609.20141230
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