可控震源资料相干噪声消除方法分析  

Method Analysis on Coherent Noise Elimination of Vibroseis Data

作　　者：葛川庆[1] 夏洪瑞[2] 董江伟[2] 谢加坤[2] 

机构地区：[1]中国石化集团公司江汉石油管理局科技处,湖北潜江433124 [2]中国石化集团公司江汉石油管理局地球物理勘探公司,湖北潜江433100

出　　处：《江汉石油职工大学学报》2009年第4期78-81,共4页Journal of Jianghan Petroleum University of Staff and Workers

摘　　要：与炸药震源一样,相干噪声的消除一直是可控震源资料处理中的一个重点。根据可控震源资料与炸药震源资料在相干噪声产生的原因上并没有本质差异,在前人工作的基础上,进一步对生产中常用的消除相干噪声方法(F-K视速度滤波、道组合)以及高精度径向道扫描进行了对比性分析,得到高精度径向道扫描为最佳消除相干噪声方法的结论;同时,针对可控震源资料的特点进行了叠前、叠后相干噪声消除试验,进一步验证了叠前去噪优于叠后去噪的认识。从方法原理出发,简要分析了产生这种结果的根本原因。Coherent noise elimination as well as explosive energy source has been a key point for vibroseis data processing. This paper, according to the phenomenon that there is no essential difference in the causes of coherent noise between vibroseis data and explosive energy source data, furthers the comparison and analysis of the normal ways （F --K apparent velocity filtering, trace integration） to eliminate coherent noise and high--precision radial scan and concludes that high--precision radial scan is the best way to eliminate coherent noise. At the same time, it does some experiments on eliminating prestack and poststack coherent noise aiming at the features of vibroseis data. And the experiments show that prestaek noise elimination is better than poststack noise elimination. Also, this paper analyzes the fundamental reasons for this result, starting with methodological principle.

关 键 词：可控震源 资料 噪声 消除方法 

分 类 号：TE991.8[石油与天然气工程—石油机械设备]