约束法分解P—L变换压制多次波  

Multiple suppression by decomposed P-L transform and amplitude constraint

作　　者：曾友爱 许云[2] 

机构地区：[1]涿州石油物探局研究院,涿州072750 [2]中国地质大学,北京100083

出　　处：《石油物探》1999年第2期35-42,共8页Geophysical Prospecting For Petroleum

摘　　要：多次波严重干扰地震勘探成果。通常的多次波压制方法无法解决近道多次波问题。本文提出一种新的压制多次波的方法——约束法分解P—L变换压制多次波，该方法可以较好地压制整个排列上的多次波，且尽可能地保持振幅随炮检距的变化关系。通过理论模型和实际地震资料计算，证明该方法对压制多次波是行之有效的。Multiples are severe disturbance waves in seismic prospecting. The commonly usedmultiple suppression methods can not solve the near-trace multiple problem. This paper presents anew multiple suppression method-decomposed P-L transform with constraint. The method canwell suppress multiples along a whole array and preserve the amplitude variations with offset. Itseffectiveness is showed by the computation of theorectical models and real seismic data.

关 键 词：多次波 约束法 分解 P-L变换 地震勘探 

分 类 号：P631.443[天文地球—地质矿产勘探]