| VTI介质高斯束叠前深度偏移 |
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| 引用本文： | 韩建光,王赟,张晓波,刑占涛.VTI介质高斯束叠前深度偏移[J].石油地球物理勘探,2015,50(2):267-273. |
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| 作者姓名： | 韩建光 王赟 张晓波 刑占涛 |
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| 作者单位： | 1. 中国科学院地质与地球物理研究所, 北京 100029;
2. 中国科学院大学, 北京 100049;
3. 中国科学院地球化学研究所, 贵州贵阳 550002;
4. 中国地质科学院, 北京 100037;
5. 中国华电集团科学技术研究总院有限公司, 北京 100160 |
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| 基金项目： | 本项研究受国家自然科学基金项目(41425017、41104084)和科技部"863"课题"多分量地震裂缝检测与油气识别技术"(2013AA064201)联合资助。 |
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| 摘 要： | 本文基于各向异性运动学射线追踪和动力学射线追踪,在各向同性高斯束叠前深度偏移算法的基础上,给出了各向异性高斯束叠前偏移方法原理,提出了一种适用于VTI介质的P波高斯束叠前深度偏移方法。针对水平层状VTI介质模型,分析了各向异性参数ε和δ对高斯束叠前深度偏移的影响。对多层页岩模型和SEG/Hess模型偏移试算结果表明,本文方法是一种准确有效的VTI介质叠前深度偏移方法。
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| 关 键 词： | VTI介质 各向异性 射线追踪 高斯束叠前偏移 |
| 收稿时间： | 2013-10-12 |
Gaussian beam prestack depth migration in VTI media |
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| Han Jianguang,Wang Yun,Zhang Xiaobo,Xing Zhantao.Gaussian beam prestack depth migration in VTI media[J].Oil Geophysical Prospecting,2015,50(2):267-273. |
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| Authors: | Han Jianguang Wang Yun Zhang Xiaobo Xing Zhantao |
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| Affiliation: | 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, Guizhou 550002, China;
4. Chinese Academy of Geological Sciences, Beijing 100037, China;
5. China Huadian Science and Technology Institute, Beijing 100160, China |
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| Abstract: | Based on anisotropic kinematic and dynamic ray tracing systems, a P-wave Gaussian beam prestack depth migration method for VTI media is introduced in this paper. The imaging principle of anisotropic Gaussian beam prestack depth migration is presented on the basis of Gaussian beam prestack depth migration algorithm in isotropic media. For horizontally layered VTI media model, the influence of anisotropic parameters on Gaussian beam prestack depth migration is illustrated. Tests of multi-layer shale model and SEG/Hess model show that the proposed method is an accurate and efficient anisotropic prestack depth migration approach in VTI media. |
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| Keywords: | VTI media anisotropy ray tracing Gaussian beam prestack depth migration |
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