独立同步激发数据两步法邻炮干扰压制技术研究  

Two-step suppressing method for neighboring-shot interference by using vibroseis independent simultaneous shooting data

作　　者：黄明忠[1] 李培明[1] 王彦娟[1] 

机构地区：[1]中国石油天然气集团公司东方地球物理勘探公司采集技术支持部,河北涿州072751

出　　处：《石油物探》2012年第5期464-468,485,共6页Geophysical Prospecting For Petroleum

摘　　要：地震资料品质在很大程度上取决于覆盖次数的高低,而覆盖次数的提高必然会带来勘探成本的增加。为了解决这一难题,以可控震源独立同步激发(ISS)为代表的新一代高效采集技术得到了推广应用,极大地提高了生产效率。但ISS技术会产生很强的邻炮干扰,需要在资料处理中予以压制。较详细地分析了ISS资料邻炮干扰的特点和分布规律,发现邻炮干扰在不同道集中有不同的表现形式,因此需要进行多域分步压制。通过资料分析和处理试验,提出了两步法压制邻炮干扰的处理流程,即分别采用强振幅分频压制技术和中值滤波技术来实现ISS数据中邻炮干扰的压制,并在实际资料处理中得到了很好的应用效果。Quality of seismic data depends on the fold to some degree.Higher fold means higher cost.In order to solve this problem,vibroseis independently simultaneous shooting(ISS),as a representative of high-productivity acquisition techniques,has been widely used.However,ISS may cause strong neighboring-shot interference,which should be suppressed in data processing.We analyzed the characteristics of ISS neighboring-shot interference and its distribution in detail,and discovered that neighboring interference changes via the gathers.So multi-domain multi-step de-noising should be carried out.By data analysis and processing testing,a two-step suppressing method was proposed,that is by separately adopting strong-amplitude frequency-division suppressing and median-filtering technique to suppress the neighboring-shot interference.A good result has been achieved in actual application.

关 键 词：高效地震采集 独立同步激发 邻炮干扰 分频压制 中值滤波 

分 类 号：P631.4[天文地球—地质矿产勘探]