A High Order Optimized Traveltime Algorithm and Its Applications in Seismic Imaging
详细信息
- 责任者：Wang Jianli (China University of Geosciences (Beijing) ; Beijing 100083 ; China) ; Fang Zhengmao
- 刊名：Oil Geophysical Prospecting
- 出版年：2012
- 卷期：47(1)
- 关键词：走时残差 ; traveltime residuals ; 地震勘探 ; seismic exploration
- 页码：p.63-67
- 图表：7 illus., 11 refs.
- 分类号：1600
- issnNo：ISSN1000-7210
- isbnNo：CN13-1095/TE
摘要
Based on the Snell’s law,we propose in this paper a new algorithm to calculate the seismic traveltimes using the higher order optimum Taylor seires.A numerical example shows that this method has higher accuracy in calculating the traveltimes both in the positive and negative gradient velocity models than the conventional method.We use this method for prestack time migration of seismic data acquired in the complicated mountain area of the Northeast Sichuan and obtain the agreeable results.