物探化探计算技术2024，Vol.46Issue(2)：154-163,10.DOI:10.3969/j.issn.1001-1749.2024.02.04
基于OBC地震资料的叠后叠前多尺度裂缝预测技术在涠西南潜山储层中的应用
Application of post-and-pre-stack multi-scale fracture prediction technology based on OBC seismic data in the reservoir of Weixinan buried hill
摘要
Abstract
The reservoir of Weixinan buried hill has excellent resource potential,but the accuracy of conventional fracture prediction methods based on single post-stack seismic attribute cannot meet the needs of precise target evaluation.Based on the advantage of wide azimuth data in OBC seismic data,the article utilizes multiple attributes such as coherence,curvature,and likelihood to improve the reliability of crack prediction in post-stack attribute large-scale crack prediction.Furthermore,a fu-sion method based on multi-azimuth prediction and a data optimization prediction method based on normal illumination are pro-posed.The data foundation is improved through multi-azimuth division and normal illumination,respectively,to improve the accuracy of crack prediction.In pre-stack crack prediction,gather optimization processing is conducted to calculate anisotropic strength based on AVAZ,which leads to the density and direction of mesoscale cracks.Finally,the understanding of small-scale fracture development was obtained through drilling imaging,and a post-and-pre-stack multi-scale fracture prediction tech-nology based on OBC seismic data is ultimately formed,achieving good application results.关键词
OBC/裂缝预测/属性融合/法向照明/AVAZ/测井成像Key words
OBC/fracture prediction/attribute fusion/normal lighting/AVAZ/drilling imaging分类
地质学引用本文复制引用
鲁统祥,李明,盖永浩,周凡,廖键..基于OBC地震资料的叠后叠前多尺度裂缝预测技术在涠西南潜山储层中的应用[J].物探化探计算技术,2024,46(2):154-163,10.基金项目
"十四五"重大科技项目(KJGG2022-0302) （KJGG2022-0302）
