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.
出处
《石油物探》
EI
CSCD
北大核心
2012年第5期464-468,485,共6页
Geophysical Prospecting For Petroleum
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
high-efficiency acquisition
independent simultaneous shooting
neighboring-shot interference
frequency-division suppressing
median filtering
