物探与化探2025，Vol.49Issue(2)：312-320,9.DOI:10.11720/wtyht.2025.1265
番禺4洼古近系储层叠前反演预测技术研究
Pre-stack inversion for prediction of the Paleogene reservoirs in the Panyu 4 Sag
摘要
Abstract
To improve the inversion accuracy of reservoirs in the Paleogene strata with limited wells and sedimentary and structural com-plexity,two key technologies were used in seismic data processing:sparse pulse inversion for primary wave estimation and anisotropic Q-pre-stack depth migration(PSDM).This contributed to improved quality of seismic gathers and imaging.Then,the pre-stack simul-taneous inversion method was applied as follows:(1)Stacking velocity and layer-constrained Dix inversion were employed to obtain a low-frequency model of P-wave impedance;(2)Elastic impedance inversion was performed using angle-stacked data and well-calibra-ted wavelets,yielding far,medium,and near elastic impedance;(3)Initial P-and S-wave impedance,as well as initial density,were obtained through Fatti inversion;(4)Pre-stack simultaneous inversion was performed to obtain the final P-and S-wave impedance and density;(5)Lithology and physical property inversion results were used to predict the reservoir distribution range.This method,driv-en by three-dimensional seismic data and exhibiting low dependence on logs,can serve as a reference for reservoir prediction under similar geological settings.关键词
储层预测/Dix反演/建模精度/弹性阻抗反演/Fatti反演/叠前同时反演Key words
reservoir prediction/Dix inversion/modeling accuracy/elastic impedance inversion/Fatti inversion/pre-stack simultaneous inversion分类
天文与地球科学引用本文复制引用
张振波,刘灵,刘道理,杨登锋..番禺4洼古近系储层叠前反演预测技术研究[J].物探与化探,2025,49(2):312-320,9.基金项目
中国海油石油有限公司"十四五"重大科技项目"海上深层/超深层油气勘探技术"(KJGG2022-0403) （KJGG2022-0403）
