石油地球物理勘探2025，Vol.60Issue(2)：中插4-中插6,477-485,12.DOI:10.13810/j.cnki.issn.1000-7210.20240179
衰减岩石物理模型驱动的流体饱和度地震反演方法
Seismic inversion for fluid saturation based on attenuated rock physics model
摘要
Abstract
Quantitative saturation prediction from seismic data is important for reservoir evaluation and cost-ef-fective development.However,elastic parameters are not sensitive to fluid saturation,which results in low ac-curacy of saturation inversion driven by elastic rock physics model.Therefore,this paper proposes a fluid satu-ration seismic inversion method driven by an attenuated rock physics model.Firstly,the sensitive parameters of fluid saturation are determined by forward and inverse analysis of this model.Then,a high-precision time-fre-quency analysis method is selected to construct a saturation sensitive attribute with pre-stack seismic data.Lastly,the joint inversion of reservoir porosity and saturation is realized with the multi-parameter petrophysical joint inversion method based on the Bayesian theory.Taking a tight gas-bearing clastic rock reservoir in wes-tern China as an example,the paper quantitatively analyzes the sensitivity of different parameters to saturation and selects the gradient of peak energy with incident angle as the pre-stack sensitive attribute to fluid.The appli-cation shows that the saturation seismic inversion method based on the attenuated rock physics model can effec-tively decouple solid phase and liquid phase and improve the accuracy of saturation inversion.关键词
饱和度/贝叶斯理论/地震反演/岩石物理模型/地震波衰减Key words
saturation/Bayesian theory/seismic inversion/rock physics model/seismic wave attenuation分类
天文与地球科学引用本文复制引用
胡华锋,张立强,孙振涛..衰减岩石物理模型驱动的流体饱和度地震反演方法[J].石油地球物理勘探,2025,60(2):中插4-中插6,477-485,12.基金项目
本项研究受国家自然科学基金项目"高精度地震导向钻井关键技术及软件"(U23B6010)资助. （U23B6010）
