石油地球物理勘探2025，Vol.60Issue(2)：420,435-445,12.DOI:10.13810/j.cnki.issn.1000-7210.20240106
深度域广义双曲S变换检测储层低波数异常
Detection of low-wavenumber anomalies for reservoirs through depth-domain generalized hyperbolic S-transform
摘要
Abstract
When directly applied to seismic data in the depth domain,the time-frequency analysis method does not take into account the velocity dependency of the seismic wavelet and thus fails to eliminate spectral decom-position anomalies caused by velocity.As a result,it is difficult to distinguish wavenumber changes due to the dispersion attenuation factor.To address these issues,a novel approach called depth-domain generalized hyper-bolic S-transform is proposed in this study.This method eliminates the velocity dependency of the seismic sig-nal in the depth domain by using a constant velocity depth domain transformation technique and enhances the resolution of depth-wavenumber spectral decomposition results through an asymmetric analysis window.Syn-thetic signal tests demonstrate that compared with using S-transform in the depth domain and directly adopting generalized hyperbolic S-transform for the time domain,the improved method achieves a higher resolution and better energy focusing for depth-wavenumber spectral decomposition.Furthermore,when applied to actual depth-domain seismic data for low-wavenumber shadow detection,this method effectively predicts the hydrocar-bon potential of reservoirs,which is conducive to addressing the multi-solution problem in prediction.关键词
深度域/广义双曲S变换/深度—波数谱分解/低波数阴影Key words
depth-domain/generalized hyperbolic S-transform/depth-wavenumber spectral decomposition/low-wavenumber shadow分类
地质学引用本文复制引用
吴昊杰,陈学华,张杰,郄存才,王聪..深度域广义双曲S变换检测储层低波数异常[J].石油地球物理勘探,2025,60(2):420,435-445,12.基金项目
本项研究受国家自然科学基金项目"储层内部多尺度渗流非均匀性的岩石物理与地震波场动态效应"(42374163)、中央引导地方科技发展专项"监测CO2地质封存的动态岩石物理与时移地震波场响应机理"(2024ZYD0124)和四川省自然科学基金重点项目"深层储层裂缝渗流结构的地震岩石物理响应机理与检测方法"(2023NSFSC0019)联合资助. （42374163）
