物探化探计算技术2024，Vol.46Issue(3)：251-261,11.DOI:10.3969/j.issn.1001-1749.2024.03.01
基于变分模态分解的谱蓝化方法在叠前地震资料高分辨处理中的研究及应用
Research and application of pre-stack spectral bluing method based on VMD
摘要
Abstract
The resolution of pre-stack seismic data will affect the accuracy of pre-stack inversion and the results of AVO a-nalysis,so it is particularly important to improve the resolution of the pre-stack track set.The spectral bluing high-resolution method combines well-logging information to make the seismic data close to the actual situation.However,in the calculation process,the average amplitude spectrum of each channel superposition is used to calculate the spectrum bluing operator,which leads to some spectral information not involved in the calculation.Therefore,this paper proposes a spectral bluing method based on VMD(variational mode decomposition method).The seismic data is decomposed into multiple IMFs(intrinsic mode components)through VMD.The spectral bluing operator is calculated to improve the resolution of each IMF,and the high-resolution seismic data results are obtained through reconstruction.The proposed method has been applied to the processing of synthetic track sets and actual seismic track set data.The results show that the spectral bluing method based on VMD can fur-ther improve the spectral information and the resolution of the pre-stack track set,and it is consistent with the forward track set of actual logging data.关键词
叠前反演/谱蓝化/高分辨率/变分模态分解Key words
pre-stack inversion/spectral blue/high resolution/variational mode decomposition引用本文复制引用
肖裕锋,曹俊兴,付京城,师少晨,向韬..基于变分模态分解的谱蓝化方法在叠前地震资料高分辨处理中的研究及应用[J].物探化探计算技术,2024,46(3):251-261,11.基金项目
国家自然科学基金重点项目(42030812) （42030812）
