| 摘要: |
| 叠前深度偏移是理想的改善复杂地区和强横向速度变化的地震资料成像技术,对于复杂变速介质成像,常用 的时间域成像方法已不能满足实际需要,必须借助于深度域成像方法,特别是三维地震叠前深度偏移方法。推导了 三维叠前深度波场延拓算子公式,指出其实质含义,并通过模型测试进行了验证，介绍了一种三维叠前深度偏移的 实现方法,最后进行了偏移算子的误差分析。理论分析与实例计算表明，该计算方法是合理和有效的。 |
| 关键词: 地震资料处理 三维叠前深度偏移 外推算子 误差分析 |
| DOI： |
| 分类号: |
| 基金项目:中国石油天然气集团公司中青年创新基金(07E1024) |
|
| Realization of 3D prestack depth migration in frequency-wavenumber domain |
|
UANG Hong, HE Chao-guan, TONG Zhao-qi
|
|
(College of Computer and Communication Engineering in China University of Petroleum, Dongying 257061，China)
|
| Abstract: |
| Prestack depth migration is an imagir^ technique of seismic data which can adapt to lateral velocity variation in complex districts. For complex variable velocity mediums, time domain imaging method can not satisfy actual requirements, and prestack depth migration must be used. The calculation procedure for continuation operator of 3D prestack depth migration was derived and its actual meaning was given, ^diich were aiso proven by model test. Hie inapiementing method of 3D pr^tack depth migration was introduced. Lastly, migration operator^ error was analyzed. Tlie theory analysis and illustration calculation results verify rationality and validity of this method. |
| Key words: seismic data processing 3D prestack depth migration extrapolation operator error analysis |
