| 基于振幅拟合及信号匹配重构压制剩余多次波的方法 |
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| 引用本文： | 周东红,明君,林桂康.基于振幅拟合及信号匹配重构压制剩余多次波的方法[J].中国石油勘探,2013,18(2):45-49. |
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| 作者姓名： | 周东红 明君 林桂康 |
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| 作者单位： | 1. 中海石油(中国)有限公司天津分公司研究院,天津,300452
2. 英得赛斯科技(北京)有限公司,北京,100102 |
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| 摘 要： | 针对f—k、τ—p等滤波法不能有效衰减近偏移距多次波的问题,提出一种基于振幅拟合及信号匹配重构压制剩余多次波的方法,与滤波法组合使用,能有效衰减不同产生机制的多次波,计算效率高,能适应海量三维数据。对模型和实际资料应用后表明,该方法对剩余多次波压制后,能有效提高剖面的成像质量,降低解释难度;同时改善CRP道集的横向能量关系,为后续利用叠前道集进行AVO分析提供良好的基础资料。
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| 关 键 词： | 剩余多次波衰减 信号匹配重构 振幅拟合 近道多次波 叠前道集 |
Method for Reconstruction of Amplitude Fitting and Signal Matching to Suppress Residual Multiple |
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| Zhou Donghong
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Ming Jun
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Lin Guikang.Method for Reconstruction of Amplitude Fitting and Signal Matching to Suppress Residual Multiple[J].China Petroleum Exploration,2013,18(2):45-49. |
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| Authors: | Zhou Donghong Ming Jun Lin Guikang |
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| Affiliation: | 1 Research Institute of CNOOC Ltd Tianjin Company, Tianjin 300452; 2 Beijing lntSeis Solutions, Inc, Beijing 100102) |
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| Abstract: | To solve the problem that the filtering methods, such asf-k and r -p, cannot effectively attenuate near offset multiple, this paper comes up with a method for reconstruction of amplitude fitting and signal matching to suppress residual multiple. Combined with the filtering method, this method can effectively attenuate multiple from different generation mechanisms with high calculation efficiency and is suitable for huge magnitude of 3 D data. Application of the model and actual data shows that using this method for suppression of residual multiple can effectively improve imaging quality of profile and reduce the difficulty for interpretation. Meanwhile, it can also improve CRP gather transverse energy relation so as to provide good basic data for subsequent use of prestack gather for AVO analysis. |
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| Keywords: | residual multiple attenuation reconstruction of signal matching amplitude fitting near-offset multiple prestack gather |
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