Application of reverse time migration in HSX area

被引：0
作者：
机构：
[1] The Institute of Earth and Space Sciences, Peking University, Beijing
[2] Geophysical Research Institute of Shengli Oilfield Branch Company, SINOPEC, Dongying
来源：
Hou, Gui-Ting | 1600年 / Science Press卷 / 25期
关键词：
Characteristic layers; Complex structure; Laplacian filtering; Reverse time migration; Tomographic inversion modeling;
D O I：
10.11764/j.issn.1672-1926.2014.S1.0006
中图分类号：
学科分类号：
摘要：
Reverse time migration which is based on wave equation theory, is one of the most accurate migration techniques at present. It is more suitable for the complex structure imaging than Kirchhoff integral migration. HSX area is in the north edge piedmont of Junggar basin, with the big surface elevation differences and complicated sub-surface structure. In order to realize the application of RTM, the problem of velocity modeling must be solved. In this paper, by using the characteristic layers, it is easy to divide stratums with the same or similar wave field characteristics into formations. By constrainting with characteristic layers, the efficiency and the precision of tomographic inversion can be improved enormously. As basing on two-way wave equation wave field reverse-time extrapolation and using absorbing boundary condition to extract the picture. RTM will generate the low-frequency noise. Laplacian filtering technology can suppress the noise effectively and well keep the wave group characteristics. The actual data processing indicates that, the complex structure imaging effect of reverse time migration on the fault contact relation and high angle fracture system is superior to the Kirchhoff integral migration through comparing the results of same velocity model, produced by tomographic inversion modeling. 16721926 ©, 2014, Science Press. All right reserved.
引用
收藏
页码：6 / 10
页数：4
相关论文
共 28 条
  • [1] Chen K., Review of seismic reverse time migration methods, Progress in Exploration Geophysics, 22, 3, pp. 153-158, (2010)
  • [2] Gou L., Cai X., Liu X., Et al., Influence analysis of noise on precision of prestack depth migration interval velocity, Oil Geophysical Prospecting, 42, 2, pp. 156-163, (2007)
  • [3] Hu Y., Zhang Y., Chen L., Influencing factors and technical strategies for velocity modeling, Geophysical Prospecting for Petroleum, 45, 5, pp. 503-507, (2006)
  • [4] Pei Z., Mu Y., Di B., Et al., Study on method of wave multi-scale crosshole seismictomography incomplex media, Chinese Journal of Geophysics, 46, 1, pp. 113-117, (2003)
  • [5] Liu H., Yuan J., Chen J., Et al., Theory of large-step wavefield depth extrapolation, Chinese Journal of Geophysics, 49, 6, pp. 1779-1793, (2006)
  • [6] Ma Z., Seismic Migration Imaging, (1989)
  • [7] Yang C., Liu X., Li Y., Et al., The flow and application of seismic prestack depth migration method, Chinese Journal of Geophysics, 39, 3, pp. 409-415, (1996)
  • [8] Zhang W., Zhang G., Song H., High-accuracy hybrid prestack depth migration and its parallel implementation, Chinese Journal of Geophysics, 4, 4, pp. 542-551, (2001)
  • [9] Jing X., Tomography modeling for complex media and tests on models, Oil Geophysical Prospecting, 45, 1, pp. 66-71, (2010)
  • [10] Wang W., Xiong S., Xu H., Et al., Reverse time migration in tilt transversely isotropic (TTI) media, Oil Geophysical Prospecting, 47, 4, pp. 566-572, (2012)
123