速度误差与偏移成像的定量分析  

Quantitative Analysis between Migration Imaging Results and Velocity Errors

作　　者：白敏[1] 熊晓军[1] 吴娟[2] 

机构地区：[1]成都理工大学信息工程学院,四川成都610059 [2]成都理工大学信息管理学院,四川成都610059

出　　处：《长江大学学报（自科版）（上旬）》2010年第2期198-200,413,共3页JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG

基　　金：国家自然科学基金项目(40904035)

摘　　要：偏移速度误差分析对于正确偏移成像非常重要。通过理论三角地质模型试验,分析了速度误差对时间偏移和深度偏移成像的影响,得出深度偏移对速度误差更为敏感。在此基础上从偏移速度偏大和偏小2个方面定量化研究了速度误差对深度偏移成像的影响,得到了一些重要结论,并通过实际生物礁模型试验验证,具有重要的理论和实际应用价值。Analysis of migration velocity error is extremely important for the correct migration imaging.Through experiment of a triangle geologic model,it analyzes imaging errors of time migration and depth migration caused by migration velocity errors,the result shows that depth migration is more sensitive than time migration.Based on this,from the migration velocity is too large and too small,the paper quantitatively studies imaging errors of depth migration caused by migration velocity errors,and gets some important conclusions.The results can be verified through the model of reef,they are of great value both for theorem and for practical application.

关 键 词：速度误差 定量分析 偏移 地震正演 

分 类 号：P631.4[天文地球—地质矿产勘探]