The Inverse Time Depth Migration of Seismic Waves and Interval Velocity for Model Building about Their Method Analyses

The Inverse Time Depth Migration of Seismic Waves and Interval Velocity for Model Building about Their Method Analyses

Guangqian Du Changzhi Zhu Jing Yuan

Agricultural University of Hebei, Baoding, Hebei, 071001, China

Corresponding Author Email: 
duguangqian@outlook.com; 1346710159@qq.com
Page: 
928-941
|
DOI: 
https://doi.org/10.18280/mmc_b.860407
Received: 
15 March 2017
| |
Accepted: 
15 April 2017
| | Citation

OPEN ACCESS

Abstract: 

At present, in the process of depth-domain imaging, the inverse time depth migration of seismic wave is a frequently-used and high-precision method, in contrast to the simulation problem of seismic-wave forward number. The technology about inverse-time migration of seismic waves takes advantage of the exact boundary and discrete calculation to solve the two-way. During the progress of caculation. it’s no need to give up-and down-going wave decomposition. At the same time, it could perfectly handle the problem of multi-valued traveltime. This article maily focused on the basic principles of the inverse time migration of seismic waves and discuss the creation method and fixed way of the primative- velocity model in depth domain. And we used an empirical model to furtherly analysis it.

Keywords: 

Seismic waves, Inverse time migration, Wave equation, Pre-stack, Reverse-time migration, Velocity of depth domain, Imaging.

1. Introduction
2. The Inverse Time Migration of Seismic Waves
3. The Depth Domain Velocity of Seismic Waves for Model Building
4. Case Analysis
Conclusion
  References

1. W.J. Li, S.L. Qu, X.C. Li, Discussion on the technology of non- zero offset VSP elastic wave pre-stack reverse time depth migration, 2012, Chinese Journal of Geophysics, vol. 55, no. 1, pp. 238-251. 

2. X. Xiao, W.S. Leaney, Local vertical seismic profiling (VSP) elastic reverse-time migration and migration resolution: Salt-flank imaging with transmitted P-to-S waves, 2010, Geophysics: Journal of the Society of Exploration Geophysicists, vol. 75, no. 2, pp. S35-S49.

3. S.L. Liu, X.F. Li, Pre-stack reverse time depth migration research on high precision seismic wave, Proceedings of the twenty-eighth annual conference of the Chinese Geophysical Society, 2012, pp. 289-289.

4. J.L. Wu, P. Wu, Y. Gao, The application and research of inverse time pre-stack depth migration in the exploration of depressed buried-hill locating at the west area of LIAOHE, Proceedings of the Symposium on geophysical prospecting technology in 2012.

5. Y.F. Wang, Comparison of seismic wave interference migration and pre-conditioned regularized least square migration imaging, 2013, Chinese Journal of Geophysics, vol. 56, no. 1, pp. 230-238. 

6. K.Y. Chen, X.C. Fan, Analysis on the migration noise of the common imaging point gathers in the different regions of the seismic wave inverse time migration, 2014, vol. 26, no. 2, pp. 118-124. 

7. X.S. Bao, J.M. Zhang, C. Yin, The difference of average energy and the relationship between the change of reservoir velocity, 2008, Geophysical Prospecting for Petroleum, vol. 47, no. 1, pp. 24-29.

8. T. Chen, L.J. Huang, Imaging steeply-dipping fault zones using elastic reverse-time migration with a combined wave field-separation and pointing-vector imaging condition, 39th Workshop on Geothermal Reservoir Engineering 2014, Vol. 2, Stanford Geothermal Program Workshop Report SGP-TR-202.Stanford, California(US).24-26 February 2014.2014:891-901.