频率域地表一致性反褶积方法的应用研究

Study on application of surface consistency deconvolution in frequency domain

由于地表条件的影响,野外采集得到的地震资料在不同位置特征差异较大,并且原始地震资料的分辨率一般不能满足地质目标解释的要求。为了消除地表条件变化对地震子波波形的影响以及提高原始地震资料的分辨率,在提高地震资料信噪比的前提下,可以进行频率域地表一致性反褶积处理。频率域地表一致性反褶积方法在应用中会受到一些因素以及关键处理参数的影响,对这些因素及参数进行了详细测试及分析,在此基础上优选处理参数对实际地震资料进行了地表一致性反褶积应用,取得了较好的处理效果,消除了地表条件变化带来的影响,地震子波得到压缩,资料频带明显展宽,分辨率明显提高。

Due to the effects of surface conditions,the seismic data acquired in the field are different quietly in characteristics among different acquisition positions.And the resolution of the source seismic data could not meet the requirements of geological target interpretation.To eliminate the effects of surface conditions on seismic wavelet waveform and improve the resolution of source seismic data,the surface consistency deconvolution could be carried out in frequency domain on the premise of improving the signal-to-noise ratio of seismic data.The surface consistent deconvolution in frequency domain is affected by some factors and key processing parameters in actual application,so these factors and parameters are tested and analyzed in details.On this basis,some parameters are optimized,the actual seismic data is processed by surface consistent deconvolution,and good results are obtained.The effects from the change of surface conditions are eliminated,the seismic wavelet are compressed,and the data band are widened significantly.The resolution is significantly improved.