消除叠后地震记录相干噪声的时-空变倾角KL变换
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摘要
对常规KL变换和倾角扫描叠加KL变换用于去除地震剖面中相干噪声的情况进行了探讨 ,指出了它们的适用情况及局限性 ,并在此基础上提出了去除叠后地震记录中相干噪声的新方法———时 空变倾角KL变换。使用该方法既能有效去除强相干噪声 ,又能较好保持有效信号同相轴的连续性。最后用合成剖面和实际剖面证明了该方法的有效性
In this paper, the effects of using conventional KL transform and dip scanning stack KL transform to remove coherent noises in seismic record are discussed, with their scopes of application and limitations pointed out. Based on these two methods, the authors suggest a new technique for removing coherent noises, which is called space-time variety and dip angle KL transform. With this technique, we can not only remove the strong coherent noises effectively but also maintain the continuity of effective events. The validity of this technique has been proved by applying it to the synthetic data and the real data.
In this paper, the effects of using conventional KL transform and dip scanning stack KL transform to remove coherent noises in seismic record are discussed, with their scopes of application and limitations pointed out. Based on these two methods, the authors suggest a new technique for removing coherent noises, which is called space-time variety and dip angle KL transform. With this technique, we can not only remove the strong coherent noises effectively but also maintain the continuity of effective events. The validity of this technique has been proved by applying it to the synthetic data and the real data.
引文
[1] 岳承祺,唐权钧.用K L变换提高多道地震记录的信噪比[J].石油地球物理勘探,1988,23(5):560-568.
[2] 蔡仲华,国建凤.应用时空变KL滤波消除叠后地震记录相干噪声[J].石油地球物理勘探,1999,34(增刊):53-58.
[2] 蔡仲华,国建凤.应用时空变KL滤波消除叠后地震记录相干噪声[J].石油地球物理勘探,1999,34(增刊):53-58.
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