石油物探2025，Vol.64Issue(2)：305-314,10.DOI:10.12431/issn.1000-1441.2023.0245
浅海地震数据中的拍振现象与时滞-对数域压制
Beat phenomenon in shallow water seismic data and its lag-log domain suppression
摘要
Abstract
Ringing and bubble noises common in shallow water seismic exploration may lead to strong low-frequency reverberations with periodic increase and decrease in envelope amplitude in seismic data.Conventional deterministic deconvolution using far-field wavelets and predictive deconvolution do not have good performance for suppressing such noises.The Ricker-compliant deconvolution method proposed by Claerbout is a paradigm for suppressing bubble effects in offshore seismic data.Based on the Claerbout's theory,this paper proposes a lag-log domain filter to suppress low-frequency reverberations in beat envelope amplitude,redefines the medium-time-delay signal in the lag-log domain,and divides the data into small-lag signals,medium-lag signals and large-lag signals.According to different signal distributions,a Kolmogorov filter is constructed to remove medium-and large-lag signals,or reverberations and bubbles.Testing results show that lag-log domain filtering gets a good result in suppressing low-frequency reverberations in beat envelope.A comparative study of real data processing shows that lag-log domain filtering performs better than several other methods in the suppression of low-frequency reverberations.关键词
拍振包络/低频混响/反褶积/柯尔莫科洛夫谱分解/时滞-对数域/倒频谱Key words
beat envelope/low-frequency reverberation/deconvolution/Kolmogorov spectral factorization/lag-log domain/cepstrum分类
地质学引用本文复制引用
王明星,张庆淮,陈吴金..浅海地震数据中的拍振现象与时滞-对数域压制[J].石油物探,2025,64(2):305-314,10.基金项目
中石化地球物理公司技术攻关课题(SGC202301,SGC202425)资助. This research is financially supported by the Basic Study Topic from Sinopec Geophysical Corporation(Grant Nos.SGC202301,SGC202425). （SGC202301,SGC202425）
