高密度细分面元处理资料的信噪比评价

The S/N evaluation of bin-divisible processing for high density seismic data

文章从模型研究和永新工区实际应用两个方面,对高密度勘探的细分面元处理效果进行了评价,得出了有一定借鉴意义的结论:1)在现有常规检波器接收条件下,太小的面元(5m×5m、10m×10m)对于提高资料的信噪比价值不大;2)在单道记录信噪比已较高的情况下,想通过提高覆盖次数来提高资料的分辨率,其提升空间非常有限;3)对于东部地区,从性价比上考虑,覆盖次数150～300已能满足要求,太高密度没有本质上改进资料的质量。

This paper based on model data and real data of Yongxin project,researches the bin-divisible processing of high-density seismic exploration and gets some useful conclusion.1)In existing conditions of general geophones,too small bin(like 5m×5m,10m×10m)is not available to increase the S/N ratio of seismic data;2)When the S/N of a single trace is high,it is very difficult to increase seismic resolution by enhancing fold.3)For east area,the most available fold is 150～300 considering cost performance ratio.Too high density doesn't improve seismic quality in essential.