海洋地质与第四纪地质2024，Vol.44Issue(6)：195-203,9.DOI:10.16562/j.cnki.0256-1492.2023011601
基于地震融合属性的砂体连通性判断方法
A method for judging sand body connectivity based on seismic fusion attributes:A case of the Bozhong Sag
摘要
Abstract
The fine description of sand bodies in the lower member of the Minghuazhen Formation(Neogene)in the middle and shallow layers of the Bozhong Sag,Bohai Bay,is limited due to thin interbeds and insufficient seismic and logging data,making it difficult to determine the connectivity of sand bodies.Based on the actual seismic,logging,and geological data in the study area,a corresponding model was established based on the actual characteristics of the sand bodies in the study area,and suitable seismic attributes were verified and optimized through the wave equation method in forward modeling technology.By using a minimum horizontal distance of 1/8 of wavelength and a vertical overlap of 1/6 the wavelength,the root mean square amplitude attribute,sweet spot attribute and main frequency attribute were more effective than using seismic data in determining the connectivity of sand bodies in mid-to-shallow layers.According to the verification of Well X5 logging in the study area,the correlation between seismic fusion attribute and sand body thickness was significantly improved,and the thickness of sand body itself and the distance of contact points among sand bodies could be quantitatively calculated,which played a good role in determining the connectivity of sand bodies in the study area.关键词
正演模拟/地震属性/砂体连通性/渤中凹陷Key words
forward simulation/seismic attributes/sand body connectivity/Bozhong Sag分类
天文与地球科学引用本文复制引用
张罗成,刘怀山,张志军,谭辉煌,赵明鑫,杨宸..基于地震融合属性的砂体连通性判断方法[J].海洋地质与第四纪地质,2024,44(6):195-203,9.基金项目
国家自然科学基金项目"近海底地震海洋学立体探测与成像基础研究"(91958206) （91958206）
