基于面波模拟和曲波变换的去噪技术  

Seismic Denoising Technique Based on Surface Wave Modeling and Curvelet Transform

作　　者：崔永福[1,2] 李国发[3] 吴国忱[1] 尚帅[2] 赵锐锐[2] 罗莉莉[2] 

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [2]中国石油塔里木油田公司勘探开发研究院,新疆库尔勒841000 [3]中国石油大学(北京)地球物理与信息工程学院,北京102249

出　　处：《吉林大学学报（地球科学版）》2016年第3期911-919,共9页Journal of Jilin University：Earth Science Edition

基　　金：国家重点基础研究发展计划(国家"973"计划)项目(2013CB228604);国家油气重大专项(2011ZX05014-001-010HZ)~~

摘　　要：面波是陆上地震资料的主要干扰噪声,目前主要采用基于十字交叉排列的FKK(频率-波数-波数)面波压制技术;但其效果不理想,会损害部分有效信号的低频能量。针对此问题,提出一种面波模拟和曲波变换联合压制面波的技术。首先利用面波模拟逐级压制基阶、一阶和二阶面波;然后,再采用曲波变换方法压制残余面波。实际地震资料的处理结果表明:与三维FKK滤波相比,本文所述方法在压制面波的同时,能够保持反射波的低频信息,提高了信噪比。该技术是一种相对保幅的压制面波方法。Surface wave is the main noise inseismic land data. The conventional FKK method with crossing trace gather cannot protect useful information with low frequency. In this paper,we propose a method based on surface wave modeling and curvelet transform to suppress surface waves. The proposed method includes two steps. In the first step,we use surface wave modeling to suppress base order,first order and second order surface wave. In the second step,the curvelet transform is used for residual surface wave removal. Results from filed data examples how that the proposed method can protect useful signals in low-frequency range while removing surfacewaves,the signal to noise ratio can be improved,and the work flow provides a surface wave suppression method with relative amplitude preserving,especially in the study area.

关 键 词：面波模拟 曲波变换 面波压制 保幅去噪 

分 类 号：P631.4[天文地球—地质矿产勘探]