| 基于广义的炮偏移方法实现地表多次波和一次波联合成像 |
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| 引用本文： | 郭书娟,李振春,仝兆岐,马方正,叶月明.基于广义的炮偏移方法实现地表多次波和一次波联合成像[J].地球物理学报,2011,54(4):1098-1105. |
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| 作者姓名： | 郭书娟 李振春 仝兆岐 马方正 叶月明 |
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| 作者单位： | 1. 中国石油大学(华东)地球资源与信息学院,青岛 266555;
2. 中国石油化工股份有限公司胜利油田分公司物探研究院,东营 257061;
3. 中国石油杭州地质研究院,杭州 310023 |
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| 基金项目： | 国家重点基础研究计划(973项目)专题，国家高技术研究发展计划(863项目)，国家自然科学基金项目 |
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| 摘 要： | 多次波是地下反射层的多次波反射,也蕴含了地下反射界面的信息,因此并不是绝对地只能被当做噪音来处理.为实现对地下构造的准确成像,本文基于广义概念上的炮偏移成像算法,对常规一次波偏移方法从用于向下延拓的上、下行场以及成像条件方面进行了改进,将同时含有表层多次波的炮记录与脉冲震源之和作为下行延拓的震源波场,将同时含有表层多次...
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| 关 键 词： | 广义炮偏移 表层多次波 一次波 联合成像 |
| 收稿时间： | 2010-04-19 |
Joint imaging of primaries and surface-related multiples based on generalized shot-profile migration |
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| GUO Shu-Juan,LI Zhen-Chun,TONG Zhao-Qi,MA Fang-Zheng,YE Yue-Ming.Joint imaging of primaries and surface-related multiples based on generalized shot-profile migration[J].Chinese Journal of Geophysics,2011,54(4):1098-1105. |
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| Authors: | GUO Shu-Juan LI Zhen-Chun TONG Zhao-Qi MA Fang-Zheng YE Yue-Ming |
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| Institution: | 1. College of Geo-resources and Information, China University of Petroleum (East China),Qingdao 266555,China;
2. Geophysical Research Institute of SINOPEC Shengli Oilfield, Dongying 257061, China;
3. Petro China Research Institute of Geology, Hangzhou 310023, China |
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| Abstract: | In this paper, a generalized traditional shot-profile migration is presented to jointly image primaries and surface-related multiples. This method replaces the impulsive source with sum of impulsive source and recorded primaries and surface-related multiples, and the extrapolated wavefield at the receivers consists of recorded primaries and surface-related multiples. To achieve crosstalk suppression, the method introduces a 2D deconvolution imaging condition. A simple five-layers model and complex Sigsbee2b synthetic data are used to test the method. Results show that the method is effective to suppress the crosstalk artifacts generated by interference of upgoing and downgoing events not associated with the same subsurface reflection points. |
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| Keywords: | Generalized shot-profile migration Surface-related multiple Primary Joint imaging |
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