【摘要】 目前的地震资料去噪方法多为对逐道的地震数据进行去噪处理,未考虑构造或层序方面的信息,方向性滤波去噪方法的不同之处在于它是沿着地震数据的同相轴方向进行滤波,可以更加有效地提高地震信号的信噪比,并增强地震同相轴的连续性。方向性滤波去噪方法是通过梯度结构张量估计地震同相轴的方向信息,根据这些方向信息进行方向性滤波器的设计,并将该滤波器应用于地震数据进行滤波。模型检验及实际应用表明,方向性滤波去噪方法不仅提高了原始地震数据的信噪比,还保持了原始信号的分辨率,方向性滤波去噪处理的地震资料仅在低频和高频部分的能量略有降低,并未降低原始信号的主频,为进一步的地震解释性处理提供高信噪比、高分辨率的地震数据,具有广阔的实际应用价值。更多还原

【Abstract】 The current seismic noising cancelling methods are mostly data processing by means of reading the seismic data trace by trace without considering the layer structure information.Orientation filtering method can filter data along seismic events.So,it can improve the SNR of seismic signal more effectively,enhance the continuity of seismic events and show sequence internal model clearly.Firstly,seismic events direction information is estimated by using the gradient structure tensor.Secondly,orientation filter is designed depending on the direction information.Finally,the proposed filter is applied in real seismic data processing.Model and real data application shows that this method can provide high quality seismic data for seismic data processing,and thus has a better practical application value.更多还原