| 弹性波Kirchhoff叠前深度偏移速度分析 |
| |
| 引用本文： | 韩建光,王赟,芦俊,胡莲莲,王彦嫱.弹性波Kirchhoff叠前深度偏移速度分析[J].石油地球物理勘探,2013,48(5):694-699. |
| |
| 作者姓名： | 韩建光 王赟 芦俊 胡莲莲 王彦嫱 |
| |
| 作者单位： | 1.中国科学院地质与地球物理研究所,中国科学院矿产资源研究重点实验室,北京 100029;2.中国科学院大学,北京 100049;3.中国利-学院地球化学研究所,贵州贵阳 550002;4.中国地质大学(北京),北京 100083 |
| |
| 基金项目： | 国家科技重大专项(2011ZX05035-001-006HZ,2011ZX05008-006-22,2011ZX05049-01-02,2011ZX05019-003)；国家自然科学基金项目(41104084)；中国石油科技创新基金项目(2011D-5006-0303)联合资助 |
| |
| 摘 要： | 本文提出的弹性波偏移速度分析方法是基于Kirchhoff叠前深度偏移形成纵波和转换波炮检距域共成像点道集拉平准则,分别对纵波和横波偏移速度进行更新。当两分量地震数据成像深度不-致时,通过调整横波偏移速度进行深度匹配,完成高精度的弹性波场偏移速度分析。文中分别给出速度更新及深度匹配方法。模型数据和实际资料试算结果表明了该方法的可行性和有效性。
|
| 关 键 词： | 弹性波偏移速度分析 炮检距域共成像点道集 Kirchhoff叠前深度偏移 深度匹配 |
| 收稿时间： | 2012-05-08 |
Elastic wave Kirchhoff pre-stack depth migration velocity analysis |
| |
| Han Jianguang,Wang Yun,Lu Jun,Hu Lianlian,Wang Yanqiang.Elastic wave Kirchhoff pre-stack depth migration velocity analysis[J].Oil Geophysical Prospecting,2013,48(5):694-699. |
| |
| Authors: | Han Jianguang Wang Yun Lu Jun Hu Lianlian Wang Yanqiang |
| |
| Affiliation: | 1. Key Laboratory of Mineral Resources, Institute of Ueology and Ueophysics, Chinese Academy of Sciences, Beijing 100029, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Institute of Ueochemistry, Chinese Academy of Sciences, Uuiyang, Uuizhou 550002, China;
4. China University of Ueosciences(Beijing), Bei-jing 100083, China |
| |
| Abstract: | Based on multi-component seismic data offsetdomain common-image gathers flattening principle,an elastic wave migration velocity analysis is proposed in this paper.According to the elastic Kirchhoff pre-stack depth migration equation,PPand PS-waves offset-domain common-image gathers are extracted respectively.Then,migration velocity fields of P-and S-waves are updated based on residual moveout equation.If target depths in the migration profiles between Z-and X-components are inconsistent,depth matching is performed with adjusting the shear wave velocity.So the high precision P-and S-wave velocities are obtained.The velocity update method and depth matching method are presented respectively in the paper.Tests of synthetic and field data illustrate that the method is an applicable and efficient elastic wave migration velocity analysis method. |
| |
| Keywords: | elastic wave migration velocity analysis offset-domain common image gather Kirchhoff pre-stack depth migration depth matching |
|
| 点击此处可从《石油地球物理勘探》浏览原始摘要信息 |
|
点击此处可从《石油地球物理勘探》下载全文 |
|
