CT理论与应用研究2016，Vol.25Issue(5)：507-514,8.DOI:10.15953/j.1004-4140.2016.25.05.01
逆时偏移与Kirchhoff偏移的抽道集对比研究
Research on RTM and Kirchhoff Migration Gathering
摘要
Abstract
Common Imaging gather (CIG) can be used to velocity modeling, migration quality control, subsurface attribute interpretation and so on. Prestack AVO inversion is valuable for reservoir characterization, fracture prediction and fluid detection on complicate carbonate reservoir. However, the accuracy of AVO inversion relies on the amplitude information of CIG to a large extent. Therefore, Prestack migration should not only image reflectors correctly but also preserve the amplitude of CIG, which is the input data of AVO/AVA inversion. In this paper, we analyze the amplitude-preserved extent and adaptability on complicate structure imaging of the two imaging methods. The test results show that both RTM(Reverse Time Migration)and Kirchhoff migration are of high amplitude preservation on plain structure, and RTMare better amplitude-preserved and imaging accuracy than Kirchhoff migration on complicate structure.关键词
逆时偏移/Kirchhoff叠前深度偏移/保幅抽道集Key words
RTM/Kirchhoff pre-stack migration/amplitude-preserved gathering分类
天文与地球科学引用本文复制引用
孔雪,胡秋媛,刘丹,王巍,杨建磊,李萧..逆时偏移与Kirchhoff偏移的抽道集对比研究[J].CT理论与应用研究,2016,25(5):507-514,8.基金项目
国家自然科学基金青年基金（41104069）；中国石油大学胜利学院春晖计划（KY2015003）。 （）
