| 基于F-K和Radon变换的多次波衰减方法 |
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| 作者姓名： | 张亚伟 严加永 刘振东 张永谦 徐峣 |
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| 作者单位： | 1. 中国电建集团贵阳勘测设计研究院有限公司， 贵州 贵阳 550081;2. 中国地质科学院矿产资源研究所，国土资源部成矿作用与资源评价重点实验室， 北京 100037 |
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| 基金项目： | 中国地质调查“破碎蚀变岩型金矿深部找矿勘查技术集成(编号:12120114053301)”、中央级公益性科研院所基本科研业务费(编号:k1217)和国家自然科学基金(编号:41104061)项目联合资助。 |
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| 摘 要： | 多次波干扰是地震勘探中最重要的问题之一，其衰减技术也是地震数据处理的难题之一。本文主要介绍了多次波的形成、分类及其特征，并在ProMax系统上对合成地震记录的多次波进行了压制:首先采用合适的速度对时-空域的地震记录进行NMO校正;然后，分别用F-K变换和Radon变换方法将其变换到F-K域和Radon域，对多次波所占据的主要区域进行充零衰减;最后，通过对应的反变换将其变换到时-空域，从而达到多次波衰减的目的。通过在ProMax系统中的应用表明:不同方法对多次波的衰减效果各有优劣，组合滤波方法能达到更好的效果。
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| 关 键 词： | 多次波 NMO校正 F-K变换 Radon变换 地震勘探 |
| 收稿时间： | 2015-01-03 |
Multiples Attenuation Approach by F-K and Radon Transform |
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| Authors: | ZHANG Ya-wei YAN Jia-yong LIU Zhen-dong ZHANG Yong-qian XU Yao |
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| Institution: | 1. Guiyang Engineering Corporation Limited of Power China,Guiyang,Guizhou 550081, China;2. Institute of Mineral Resources, Chinese Academy of Geological Sciences, MLR Key Laboratory of Metallogeny and Mineral Assessment, Beijing 100037, China |
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| Abstract: | Multiples is one of common noises in seismic exploration, the techniques of multiples attenuation is a serious problem in seismic data processing. This paper introduced the formations, classifications, characteristics of multiples, and the multiples attenuation in synthetic seismic data in ProMax system. Firstly, NMO correction with the appropriate speed for CDP gathers in t-x domain; Secondly, used F-K transform and Radon transform respectively to convert it to different domains, then attenuated the area where multiples was in new domains; Finally, transformed it to t-x domian through the corresponding inverse transforms to achieve the purposes of the multiples attenuation. By the applying of multiples attenuation in ProMax system, it suggests that different methods of multiples attenuation have advantages and disadvantages, and multiples attenuation in combination with different methods will achieve better results. |
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| Keywords: | multiples attenuation NMO correction F-K transform Radon transform seismic exploration |
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