复杂山地低信噪比地震资料处理方法

宜阳复杂山地地震资料的特点是静校正量大,信噪比低。针对该区的特点,在资料处理中采用建立全区统一浮动基准面与折射静校正方法解决静校正问题;运用叠前去噪技术、目标速度分析、DMO技术、优化迭代叠加技术、F-X域信号增强去噪技术,同时,优化处理流程,精选处理参数,取得了明显效果。

LOW SIGNAL-TO-NOISE RATIO SEISMIC DATA PROCESSING METHODS IN THE COMPLEX MOUNTAIN AREA

The signal-to-noise ratios of seismic data acquired in Yiyang complex mountain area are low and the amount of static correction is large. In accordance with the data characteristics, the following data processing techniques were used: For the purpose of solving the problem of static correction in the data processing, the uniform datum level for the whole area and the refraction static technique were adopted. Various means were employed such as pre-stack noise elimination, target velocity analysis, DM0, optimizing iteration and stacking, F-X domain signal enhancement, optimizing processing flow and careful selection of processing parameters. As a result, satisfactory outcomes have been obtained.