频率-空间域数据规则化压制采集脚印技术研究

Study of suppressing acquisition footprint by data regularization in frequency-space domain

（中国石油大学（北京）,北京102249）

China University of Petroleum(Beijing),Beijing 102249,China

针对以往常规道内插方法存在的缺陷,引入三维频率-空间域叠前数据规则化技术,采用对地震道进行加权处理的思路,利用自适应插值计算方法,实现相邻道补权压制采集“脚印”的目的。同时,利用偏移距、方位角和输出单元中心坐标信息,计算出炮点与检波点的位置及相关的道头属性。对道头属性值的插值计算提高了后续处理（如叠前偏移等）的稳定性,从而得到相对保幅的成果数据。

Aiming at the defect of conventional trace interpolation method,the 3D pre-stack data regulation in frequency-space domain was introduced,which adopted the thinking of weighted processing on seismic traces,by using self-adaptive interpolation computation method,to suppress the acquisition footprint by adjacent trace weighting.Meanwhile,the offset,azimuth,and the output unit center coordinates were used to compute the source and receiver positions and other relevant trace header attributes.Proper interpolation of trace header attributes enhanced the stability of subsequent process such as pre-stack migration,and then the data with relative amplitude preservation was achieved.