【摘要】 克拉玛依油田四2区大部分三维地震资料品质较差,浅、中、深层资料信噪比极低,面波、脉冲等干扰严重,在记录上几乎看不到有效反射信息,猝发脉冲噪声现象严重,三维地震资料束线多、变观现象严重。另外,地震资料多次波不发育,给处理带来了较大困难。采用FOCUS及GRISYS两套地震资料处理系统,进行叠前去噪、DMO叠加去噪、叠前F-X域预滤波、反褶积试验、三维RNA技术提高剖面信噪比以及PR分裂一步法偏移等处理方法,取得了很好的效果。更多还原

【Abstract】 The 3D seismic data from District No.4-(2) in Karamay oilfield is mostly characterized by such poor quality as extremely low signal/noise ratio,serious surface wave and pulse interference,few effective reflection information,distinct pulse noise and undeveloped round trip echo in shallow,middle and deep strata,etc.All these bring great difficulties for the data processing.This paper adopts FOCUS and GRISYS for seismic data processing to prestack noise removal,DMO stack noise removal,prestack F-X field pre-filtering,deconvolution test,3D RNA for improving signal/noise ratio and PR one-step migration technique,etc.,and very good results have been gained.更多还原