GeoEast噪声衰减模块的组合应用效果分析  

Joint application of noise removal modules of GeoEast

作　　者：宋雪娟[1] 徐基祥[1] 秦臻[1] 王春梅[1] 戴晓峰[1] 

机构地区：[1]中国石油勘探开发研究院物探技术研究所,北京100083

出　　处：《石油地球物理勘探》2014年第A01期27-34,2,共8页Oil Geophysical Prospecting

摘　　要：针对中国西部B区具有平原区、山区和砾石区特有的各种复杂噪声的单炮记录,利用GeoEast处理系统中线性干扰压制、自适应面波衰减和异常振幅衰减等三项干扰压制技术,分别对该地区地震资料进行了线性干扰、面波和异常振幅等的衰减处理,并取得了较好的处理效果。本文在分析三种噪声衰减效果的基础上,探讨了GeoEast处理系统中这几种噪声衰减技术的组合处理流程,并对此地震资料进行了重新处理。处理结果表明:组合应用GeoEast噪声衰减技术是衰减混合噪声的一种有效方法,具有一定的实用性。For seismic data processing in the area B of the West of China,the major challenge is low signal-to-noise ratio caused by mixed noises due to complex surface condition such as plain,mountains,and gravel areas.To attenuate this kind of mixed noises,we jointly use three noise attenuation modules provided by GeoEast:LinNiRemv,GrnRolAtten,and WildAmpAtten.This joint application to seismic data set in the area B attenuates linear noise,surface wave,and wild amplitudes,and improves significantly signals.Based on the pilot application,we design the new workflow and reprocess the seismic data.The reprocessing result demonstrates that combing noise attenuation approaches provided by GeoEast are robust and the workflow is practical.

关 键 词：GeoEast 线性干扰 面波 异常振幅 噪声衰减 

分 类 号：P631[天文地球—地质矿产勘探]