石油物探2025，Vol.64Issue(5)：845-853,9.DOI:10.12431/issn.1000-1441.2024.0033
高阶累积量型干涉插值法外推远偏移距反射波信号
An interferometric interpolation method via the high-order cumulant to extrapolate the far-offset reflected wave
摘要
Abstract
The interpolation method based on seismic interference achieves the reconstruction of missing data successfully by using multiple waves,through the conversion of primary and multiple waves.However,the traditional interferometry suffers from severe wavelet deformation and the inability to reconstruct seismic data beyond the original maximum offset.In this paper,the third-order cumulant is introduced into the interference extrapolation method instead of the correlation calculation to extract the time delay.The calculation of the third-order cumulant does not include the calculation of autocorrelation,so the energy of the sidelobes is greatly weakened.The proposed method improves the resolution and signal-to-noise ratio of the reconstructed far-offset reflected wave by testing the horizontal layered geological model,deep-water salt model,fault model as well as the field data of ocean exploration.The high-order cumulant interference interpolation method can realize the high-quality extrapolation of the reflected wave,enhancing the energy of far-offset reflected wave.Moreover,the proposed method can improve the superposition times of far-offset data,and provide effective information for subsequent seismic processing.关键词
干涉插值法/高阶累积量/多次波/分辨率/信噪比Key words
interferometric interpolation/high-order cumulants/multiple waves/seismic resolution/signal-to-noise ratio分类
能源科技引用本文复制引用
于珍珍,马坚伟..高阶累积量型干涉插值法外推远偏移距反射波信号[J].石油物探,2025,64(5):845-853,9.基金项目
国家自然科学基金项目(42230806,U23B6010)和中国石油天然气集团公司-北京大学基础研究战略合作项目共同资助. This research is financially supported by the National Natural Science Foundation of China(Grant Nos.42230806,U23B6010),China National Petroleum Corporation-Peking University Strategic Cooperation Project of Fundamental Research. （42230806,U23B6010）
