| 三维Born近似波动方程炮域叠前深度偏移 |
| |
| 引用本文： | 石建新,王华忠,徐兆涛,王常波.三维Born近似波动方程炮域叠前深度偏移[J].勘探地球物理进展,2002,25(3):32-36. |
| |
| 作者姓名： | 石建新 王华忠 徐兆涛 王常波 |
| |
| 作者单位： | 1. 中国石化胜利油田有限公司物探研究院,山东东营,257021
2. 同济大学教育部海洋地质重点实验室,上海,200092 |
| |
| 基金项目： | 国家自然科学基金项目 (4 9894190 )，上海市重点学科资助项目。 |
| |
| 摘 要： | 基于射线理论的Kirchoff三维偏移方法，在解决复杂构造的成像时遇到了困难。基于波动方程的三维叠前深度偏移对横向剧烈变速具有较强的适应性，且成像精度较高。Born近似傅里叶偏移方法，是基于小扰动假设，引入参考慢度，可以适应横向变速。利用频率波数域与空间频率域混合域偏移算子，构造出炮域波动方程三维叠前深度偏移算法，形成相应的处理流程。对SEG/EAGE盐丘模型数据集C的宽方位角三维数据进行了测试，实现真正全三维波动方程叠前深度偏移处理；对胜利油田CB地区部分海上实际资料进行了试处理。
|
| 关 键 词： | 波动方程 混合域偏移算子 Born近似 傅里叶变换 |
| 收稿时间： | 2002-1-30 |
| 修稿时间： | 2002年1月30日 |
Wave equation pre-stack depth migration with 3D Born approximation in shot gathers |
| |
| Shi Jianxin ,Wang Huazhong ,Xu Zhaotao ,Wang Changbo.Wave equation pre-stack depth migration with 3D Born approximation in shot gathers[J].Progress in Exploration Geophysics,2002,25(3):32-36. |
| |
| Authors: | Shi Jianxin Wang Huazhong Xu Zhaotao Wang Changbo |
| |
| Affiliation: | Shi Jianxin 1,Wang Huazhong 2,Xu Zhaotao 1,Wang Changbo 1 |
| |
| Abstract: | The common 3 D Kirchhoff migration that is based on ray theory encounters difficulties in imaging complex structures. Born approximated Fourier pre stack depth migration method which is on the hypothesis of small slowness perturbation can accommodate severe lateral velocity variations. In this paper we discuss details about the construction of 3 D wave equation pre stack depth migration algorithm in shot gathers by combining migration operators of frequency wavenumber domain and spatial frequency domain, and its corresponding processing flow. The method has been successfully applied to the data set C of SEG/EADE salt model and the real marine data from CB area of Shengli Oilfield. |
| |
| Keywords: | wave equation migration operator in hybrid domain Born approximation Fourier transform |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《勘探地球物理进展》浏览原始摘要信息 |
|
点击此处可从《勘探地球物理进展》下载全文 |
