The Research of Reverse-Time Migration for Cross-Hole Seismic

LI Zhe, CAO Xia, LIN Songhui, WEI Guohua

Abstract


Cross-hole seismic is the leading technology of development seismology, which is still developing and improving. With the development of down-hole acquisition equipment, cross-hole seismic acquisition technology is getting mature, providing better data for imaging. According to the features of cross-hole survey and cross-hole data, we put forward a reverse-time migration method which is suitable for the wave equation for cross-hole seismic data. We propose finite difference scheme of higher order, and then derive its stability condition in cross-hole seismic. The frequency dispersion problem in cross-hole seismic wave field extrapolation is also discussed. Cross correlation imaging condition is used to realize migration, and Laplace filter is applied to remove low-frequency noise from migration section. Thus finite-difference reverse-time migration method for cross-hole seismic is established. Finally, we build geological models with anomalous ellipsoids, and apply cross-hole seismic wave field simulation and migration to them, thus our method proves its effectiveness. When dealing with real cross-hole seismic data with this method, high-resolution migration sections can be achieved.
Key words: Cross-hole seismic; Reverse-time migration; Model test

Keywords


Cross-hole seismic; Reverse-time migration; Model test

Full Text:

PDF

References


[1] Whitmore, N. D. (1983). Iterative Depth Migration by Backward Time Propagation. 1983 SEG Annual Meeting, September 11 - 15, Las Vegas, Nevada.

[2] Levin, S. A. (1984). Principles of Reverse Time Migration. Geophysics, 49(5), 581-583.

[3] Hildebrand, S. T. (1987). Reverse Time Depth Migration: Impedance Imaging Condition. Geophysics, 52(8), 1060-1064.

[4] Chang, W. F., & McMechan, G. A. (1989). 3D Acoustic Reverse-Time Migration. Geophysical Prospecting, 37(3), 243-256.

[5] Zhang, Y., & Sun, J. (2008). Practical Issues of Reverse Time Migration: True-Amplitude Gathers, Noise Removal and Harmonic-Source Encoding. EAGE Conference & Exhibition.

[6] Zhu, X. H., & Mcmechan, G. A. (1988). Acoustic Modeling and Migration of Stacked Cross-Hole Data. Geophysics, 4(53), 492-500.

[7] Balch, A. H., et al. (1991). Use of Forward and Bac-Scattered P and S Wave Converted Waves in Cross-Blrehole Imaging. Geophysical Prospecting, 7(39), 887-913.

[8] Xin, Z. (1996). Methods Research of Reflection Wave Prestack Depth Migration in Crosswell Seismic (Doctoral dissertation). China University of Petroleum.

[9] Yan, H. S. (2009). 3C Borehole Seismic Data Wavefield Separation and Application (Doctoral dissertation). China University of Petroleum (East China).

[10] Ping, Y. F. (2011). Crosswell P Wave and S Wave Imaging and Application (Doctoral dissertation). China University of Petroleum (East China).

[11] Soubaras, R., Zhang, Y., & Veritas, C. G. G. (2008). Two-Step Explicit Marching Method for Reverse Time Migration. 2008 SEG Annual Meeting, November 9 - 14, Las Vegas, Nevada.

[12] Liu, Y., & Wei, X. C. (2008). Finite-Difference Numerical Modeling with Even-Order Accuracy in Two-Phase Anisotropic Media. Applied Geophysics, 5(2), 107-114.

[13] Chattopadhyay S., & Mcmechan, A. G. (2008). Imaging Conditions for Prestack Reverse-Time Migration. Geophysics, 3(73), S57-S66.

[14] Yan, C. Z., Chun, Z. L., & Dong, X. S. (2010). Review of Reverse Time Migration. Progress in Exploration Geophysics, 5(33), 309-317.




DOI: http://dx.doi.org/10.3968%2Fj.aped.1925543820130601.1658

Refbacks

  • There are currently no refbacks.


Reminder

If you have already registered in Journal A and plan to submit article(s) to Journal B, please click the CATEGORIES, or JOURNALS A-Z on the right side of the "HOME".

We only use three mailboxes as follows to deal with issues about paper acceptance, payment and submission of electronic versions of our journals to databases:
caooc@hotmail.com; aped@cscanada.net; aped@cscanada.org

Copyright © 2010 Canadian Research & Development Centre of Sciences and Cultures
Address: 730, 77e AV, Laval, Quebec, H7V 4A8, Canada

Telephone: 1-514-558 6138
Http://www.cscanada.net
Http://www.cscanada.org
E-mail:office@cscanada.net  office@cscanada.org