塔河地区检波器组合方式选择及效果分析  

Geophone array patterns for seismic acquisition in Tahe

作　　者：索重辉[1,2] 杨勤勇[1] 吕公河[1] 叶勇[1] 隋俊杰[1] 

机构地区：[1]中国石化石油物探技术研究院,江苏南京211103 [2]中国石油大学(北京)地球物理与信息工程学院,北京102249

出　　处：《石油地球物理勘探》2015年第3期393-398,1,共6页Oil Geophysical Prospecting

摘　　要：野外检波器组合可以对线性干扰波进行压制。塔河地区地震采集资料面波和线性干扰发育,能量强,严重降低了近—中道地震数据的信噪比。本文首先对研究区干扰波的特征进行了分析,然后依据检波器组合的压制效应,建立了本区的组合压制特性图谱,指出沿图谱对角线方向组合的压制效果最优。并且从理论上对三种不同检波器组合方法的压制效果进行分析对比,得出"品字形"组合方式在该区有较好的压制效果,并通过野外试验验证了结论的正确性。Geophone arrays can suppress linear noise.Middle and near offset seismic data in Tahe area is seriously contaminated by surface wave and linear noise,which causes low signal-to-noise ratio.In this paper,first we analyze noise characteristics in the area.And then we build a noise-suppressing map based on noise-suppressing effects of different geophone arrays,and notice that the best suppression is along the diagonal direction of the map.Finally theoretical comparisons among three array patterns have been made.It is proved that thethree-square shape'array patterns has the best suppressing effect based on comparison result,which is confirmed in the field seismic data acquisition.

关 键 词：塔河 地震采集 检波器 组合方式 信噪比 

分 类 号：P631[天文地球—地质矿产勘探]