地震资料分频处理

在地震资料信噪比较低、叠加次数较低的情况下,常规处理效果不好,可以采用分频处理。根据频谱分析及能量扫描,把地震记录分成几个频带,分别进行自动剩余静校正、互相关静校正、地表一致性振幅补偿、反Q滤波、消除噪音、自适应倾斜面元等处理。然后再将各频带的地震反射波能量加起来做最终修饰,获得最终叠加剖面。这样可以充分利用各个频带的反射波能量,提高处理质量。 

FREQUENCY SPLITTING PROCESSING OF SEISMIC DATA

In the case of lower signalto-noise ratio and smaller stack fold,the result of conventional dataprocessing is not satisfactory.So the frequency splitting processing should be used to improve data quality.Wedivide seismic data into several bands according to the spectral analysis and energy scanning.Respectively,weapply automatic residual statics,crosscorrelation statics,surface consistent amplitude compensation,inverse Qfilter,noise elimination and adaptive dip area method to the data.Finally,we get stack section by adding upseismic reflection wave energy of each band.