空气枪震源子阵扩展间距变化影响分析  

A brief analysis on the influence of changes in sub-arrays separations of air gun sources

作　　者：赵亮[1] 李欣[1] 李慧龙[1] 陈磅 石孟常 吴超[1] ZHAO Liang;LI Xin;LI Huilong;CHEN Pang;SHI Mengchang;WU Chao(China Oilfield Services Limited Geophysical,Tianjin Tanggu 300450,China)

机构地区：[1]中海油田服务股份有限公司物探事业部,天津塘沽300450

出　　处：《物探化探计算技术》2018年第2期150-155,共6页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：在海上地震资料采集时,由于海流、潮汐、设备自身等因素的影响,空气枪子阵扩展间距会发生变化,而这种变化会引起空气枪震源实际性能的改变,给地震资料带来一定的影响。通过定量分析评价子阵扩展间距变化前、后震源子波的特征及影响,为地震资料采集质控提供借鉴,对保证地震资料的质量有着重要意义。In marine seismic exploration,the sub-arrays'separation of air gun source may change under the influence of ocean current,tide and the gears underwater etc.,which would consequently lead to some extent impact on the performance or the physical specifications of the whole air gun array.Moreover,this impact would affect the quality of the seismic data.Depending on typical analysis and study on series of far-field signature results of air gun source modeled.This article summarizes the variation of characteristic and effect of source wavelets derived from these situations around the change of sub-arrays'separation.Analysis on the sub-arrays separations of air gun sources can help to provide solid evidence for making seismic data quality control in the process of data acquisition and thus plays a significant role in the data quality assurance.

关 键 词：空气枪震源 子波模拟 子波频谱 正演模拟 子阵扩展间距 

分 类 号：P631.4[天文地球—地质矿产勘探]