中国地质调查2023，Vol.10Issue(6)：31-38,8.DOI:10.19388/j.zgdzdc.2022.06.04
强反射背景下迭代低频模型在反演中的应用
Application of iterative low-frequency model in inversion under strong reflection background
摘要
Abstract
The accuracy of reservoir prediction affects the economy of oil and gas exploration and development,and the low-frequency model method is one of the effective methods to improve the prediction accuracy of reser-voir inversion under complex geological background.In order to remove the influence of special geological inter-faces in the study area on reservoir inversion,the authors in this paper put forward a low-frequency model con-struction method to suppress the side-lobe interference of seismic data caused by strong reflection in limestone fracture-cave reservoir.Based on the seismic data obtained from the forward wave equation algorithm,and the low-frequency model is iterated for inversion and the side-lobe interference is gradually suppressed,which fi-nally makes the inversion to be consistent with the geological model.The low-frequency model iteration method proposed in this paper is suitable for the fine characterization of fracture-vuggy carbonate reservoir,and provides reasonable elastic parameters for quantitative interpretation of reservoir,which has strong practical significance in the prediction of Ordovician fracture-vuggy reservoir.关键词
旁瓣效应/迭代低频/强反射背景/溶洞/地震反演Key words
side-lobe interference/iterative low-frequency/strong reflection background/cave/seismic inver-sion分类
天文与地球科学引用本文复制引用
刘波,王瑞,许刚,陈柏平..强反射背景下迭代低频模型在反演中的应用[J].中国地质调查,2023,10(6):31-38,8.基金项目
国家重大专项"大型油气田及煤层气开发(编号:2017ZX05005)"项目资助. （编号:2017ZX05005）
