十字排列去噪方法研究与应用

The study of Cross-spreading de-noise method and its application

在复杂地表和复杂地质情况下,地震资料中各种干扰尤其是面波非常发育,给常规地震勘探提出了挑战。传统地震资料处理方法主要是频率空间域的分频去噪法,对远排列面波压制效果欠佳,实际资料处理中较难取得理想的效果。基于十字排列的三维锥形滤波技术是有效的面波压制方法,该方法在去除面波的同时保留了丰富的低频信息,为双复杂地区的地震勘探提供了可靠的数据保障,从而在整体上大大地提高了地震资料处理的精度。

In the complex surface and complex subsurface geological conditions,a variety of interference in seismic data,especially ground roll is very developed,which is a challenge to conventional seismic exploration.The traditional seismic data processing method is mainly frequency de-noise method in frequency-space domain,the effect of ground roll suppression on far offset is poor,real data processing is difficult to achieve the desired result.The 3 D cone-shaped filtering technique based on the cross spreading is an effective method of ground roll suppression,which preserves the abundant low-frequency information while removing ground roll,which provides reliable data for the seismic exploration in double-complex areas,hereby greatly improving the accuracy of seismic data processing.