物探化探计算技术2025，Vol.47Issue(6)：817-824,8.DOI:10.12474/wthtjs.20241029-0002
粘声VTI介质高斯束逆时偏移方法研究
Reverse time migration with Gaussian beams for viscoacoustic VTI media
摘要
Abstract
As more and more wide-azimuth and long-offset data are collected,the impacts of viscosity and anisotropy on seismic imaging become increasingly prominent.Reverse time migration with Gaussian beams is a reverse-time migration algorithm that employs Gaussian beam integration to construct the Green's function.It not only boasts high computational efficiency and accuracy but also possesses the capability of target-oriented imaging.This paper initially addresses the impact of anisotropy on imaging by utilizing a ray tracing algorithm based on phase velocity.Subsequently,it incorporates frequency-dependent complex travel time to account for the absorption and attenuation effects of the media,ultimately developing a high-precision depth-domain imaging algorithm that is suitable for viscous and VTI media.Finally,theoretical models and real data are employed to validate the effectiveness and applicability of the proposed algorithm.关键词
VTI/粘滞性/射线追踪/复值旅行时/高斯束逆时偏移Key words
VTI/viscosity/ray tracing/complex travel time/reverse time migration with Gaussian beams分类
天文与地球科学引用本文复制引用
肖建恩,秦宁..粘声VTI介质高斯束逆时偏移方法研究[J].物探化探计算技术,2025,47(6):817-824,8.基金项目
山东省泰山产业创新领军人才专项资助项目(NO.tscx202312059) （NO.tscx202312059）
中石化科技攻关课题(P25108) （P25108）
