Method for estimating seismic quality factor

The invention discloses a method for estimating the seismic quality factor. The method comprises the following steps that S1, the seismic reflection data of the post-stack seismic record are acquired,and the smooth local time-frequency amplitude spectrum is obtained according to the seismic reflecti...

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Bibliographic Details
Main Authors DENG YONG, SUN WANYUAN, LIU SHIYOU, LI YANGSEN, ZHANG YINGCHAO
Format Patent
LanguageChinese
English
Published 12.10.2018
Subjects
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
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Summary:The invention discloses a method for estimating the seismic quality factor. The method comprises the following steps that S1, the seismic reflection data of the post-stack seismic record are acquired,and the smooth local time-frequency amplitude spectrum is obtained according to the seismic reflection data by using the shaping regularization and minimum square inversion technology; S2, the peak frequency based on ricker wavelet decomposition is calculated according to the local time-frequency amplitude spectrum; and S3, the seismic attenuation quality factor is estimated according to the relationship between the ricker wavelet peak frequency and the quality factor Q value. The beneficial effects of the method are that the influence of seismic noise and reflection coherence can be avoidedso that the stability, the reliability and the accuracy of the acquired quality factor can be enhanced. 本发明公开了种估计地震品质因子的方法，包括以下步骤：S1、获取叠后地震记录的地震反射数据，根据所述地震反射数据利用整形正则化和最小平方反演技术得到光滑的局部时频振幅谱；S2、根据所述局部时频振幅谱计算得到基于雷克子波分解的峰值频率；S3、根据所
Bibliography:Application Number: CN20181223065