An Improved Bilinear Interpolation Travel-Time Ray-Tracing Method
详细信息
- 责任者：Li Peiming (Acquisition Technique Supports ; BGP Inc. ; PetroChina ; Zhuozhou 072751 ; China) ; Mei Quansheng
- 刊名：Oil Geophysical Prospecting
- 出版年：2013
- 卷期：48(4)
- 关键词：地震勘探 ; seismic exploration ; 射线追踪 ; ray tracing
- 页码：p.553-558
- 图表：7 illus., 12 refs.
- 分类号：1600
- issnNo：ISSN1000-7210
- isbnNo：CN13-1095/TE
摘要
Linear travel-time interpolation ray-tracing(LTI) is a kind of ray-tracing technology which has a global searching ability and a relatively high computational efficiency.However,for near offsets LTI’s linear hypothesis usually causes poor computational accuracy and the unreasonable ray-tracing path.In order to overcome these issues,we propose an improved bilinear travel-time interpolation algorithm.This algorithm optimizes the scanning method to determine the wave-front and propagation direction of seismic waves,traces the shortest ray-path,and uses the dynamic variable density mesh mode to improve the travel-time accuracy effectively especially in near offsets.At the same time,the rapid determinant conditions and the simplified formulas effectively reduce the computational complexity and improve the computational efficiency.Theoretical model tests show the effectiveness of the method.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |