三维锥形滤波器压制面波的应用效果分析
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摘要
地滚波(面波)在地震记录上表现为一种很强的规则干扰波,具有振幅强、频率低的特点。地滚波在单炮记录的远排列端呈现出双曲型,利用三维锥体滤波技术能够压制地滚波,突出有效信号。将地震数据进行三维锥体滤波去噪后的叠加剖面中地滚波基本被完全压制,而有效信号得到保持,剖面的信噪比明显增强,同相轴的连续性得到提高。应用三维锥体滤波技术,能够做到高分辨率的相对保幅处理,保证地震数据的可靠性。
Ground roll (Ground surface wave)has the characteristics of being strong regular interference waves in the seismic record,the amplitude is high,and the frequency is low.The ground roll will present as hyperbolic in the far arranging of single shot record.Ground roll will be suppressed and effective signals will be outstanding by the application of 3-D conical filtering technique.After 3-D conical filtering,ground roll in stack sections will be removed,however,the effective signals will be remained.In the end,the signal-to-noise ratio of seismic record will be improved and the continuity of seismic event will be enhanced.3-D conical filtering corresponds to relative amplitude preserved processing,thus can improve the resolution and ensure that the seismic data is reliable.
Ground roll (Ground surface wave)has the characteristics of being strong regular interference waves in the seismic record,the amplitude is high,and the frequency is low.The ground roll will present as hyperbolic in the far arranging of single shot record.Ground roll will be suppressed and effective signals will be outstanding by the application of 3-D conical filtering technique.After 3-D conical filtering,ground roll in stack sections will be removed,however,the effective signals will be remained.In the end,the signal-to-noise ratio of seismic record will be improved and the continuity of seismic event will be enhanced.3-D conical filtering corresponds to relative amplitude preserved processing,thus can improve the resolution and ensure that the seismic data is reliable.
引文
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