摘要
地震偏移等效于横向反褶积,而反褶积也可视为某种类型的偏移。应用与f-k偏移相类似的方法,将地震记录沿射线路径向下延拓,可导出一种准确校正频散相移的反Q滤波算法。引入串联偏移的思想,可容易地将常数Q算法推广到深变Q模型;而将串联频散补偿算法与限幅补偿算法相结合,可形成一种新的常规反Q滤波方法。实际资料处理结果表明,新方法在频散补偿处理上优于现有方法,可更好地改善地震资料分辨率。
Seismic migration is equivalent to lateral deconvolution, and deconvolution can also be considered as a kind of migration. The inverse Q filtering algorithm which removes frequency-dispersive phase shift can be obtained by performing downward continuation of seismic data along ray path with the use of the method that is similar to f-k migration. Cascaded migration conception makes it easy to extend constant Q algoyithm to depth variable Q model. The combination of cascaded frequency dispersive compensation algorithm with restrainedamplitude compensation algorithm results in a new routine inverse Q filtering method. The real data proceessing says that the new method is superior to existing ones in frequency dispesive compensation processing and improves seismic data resolution obviously.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1992年第6期722-730,共9页
Oil Geophysical Prospecting
关键词
频散
反Q滤波
串联
反褶积
frequency dis lersion
Q filtering
inverse Q filtering
cascade
amplitude
compensation
