[1]张　凯　李振春　王华忠　程玖兵.射线参数共成像点道集偏移速度分析方法研究[J].复杂油气藏,2008,(04):20.
　Zhang Kai,Li Zhenchun,Wang Huazhong,et al.Study on pre-stack migration velocity analysis based on Ph-domain common imaging gathers[J].Complex Hydrocarbon Reservoirs,2008,(04):20.
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射线参数共成像点道集偏移速度分析方法研究
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
期数:
2008年04期
页码:
20
栏目:
OA
出版日期:
2008-12-25

文章信息/Info

Title:
Study on pre-stack migration velocity analysis based on Ph-domain common imaging gathers
作者:
张　凯1　李振春1　王华忠2　程玖兵2
1.中国石油大学（华东）地球资源与信息学院地球物理系，山东东营 257061；2.同济大学海洋地质国家重点实验室反射地震组，上海 200092
Author(s):
Zhang Kai1; Li Zhenchun1; Wang Huazhong2; Cheng Jiubing2
1.Geophysics Department of College of Geo-Resources and Information, China University of Petroleum, Dongying, Shandong, 257061； 2.RSG of School of Ocean and earth Science, Tongji University, Shanghai, 20092
关键词:
速度分析; 叠前深度偏移;  PhCIGs; 深度剩余量; 速度扫描
Keywords:
velocity analysis;  PhCIGs;  residual depth equation;  velocity scanning
分类号:
P315.63
文献标志码:
A
摘要:
叠前深度偏移速度分析一直是地震数据处理方法研究的重点与难点，为此，对基于射线参数域共成像点道集的剩余曲率法偏移速度分析方法进行研究。射线参数域共成像点道集（PhCIGs）属于角度域的范围，描述的是成像点局部偏移距射线参数与偏移深度之间的关系。角度域共成像点道集不会受到多路径问题的干扰，适合于进行速度分析。采用剩余曲率速度分析方法，推导了基于PhCIGs的倾斜地层深度剩余量公式，提出了基于PhCIGs的沿层速度扫描法速度分析流程。通过对凹陷模型和实际资料试处理，证明所用方法的正确性和有效性。
Abstract:
Pre-stack depth migration velocity analysis method is one of the key and difficult steps in seismic data processing research for a long time. This paper covers a kind of velocity analysis method on Ph-domain common imaging gathers (PhCIGs), which also belongs to the range of residual curvature analysis. PhCIGs, a kind of angle-domain CIGs, depicts the relation between local offset ray parameter and migration depth at local imaging point. Up to now, angle-domain CIGs are the befitting CIGs for velocity analysis, which could not be disturbed by multi-path problem. Based on dipping layer, we derived the residual depth equation, and also presented the velocity scanning method velocity analysis flow layer by layer. The tests proved the velocity analysis methods derived in this paper are robust and valid.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2008-11-07；改回日期：2008-11-12
作者简介：张凯（1978—），理学博士，中国石油大学（华东）地质资源与地质工程博士后流动站工作，主要从事地震波传播与成像方面的研究。电话：13854663896，E-mail:zhksam@163.com。
更新日期/Last Update: 2008-12-25