Common angle image gather-A strategy for imaging complex media: 68th Annual Internat
Common angle image gather-A strategy for imaging complex media: 68th Annual Internat
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DOI：
10.3997/2214-4609.201406683
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发表时间：
1998-08
期刊：
影响因子：
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通讯作者：
Shouhuai Xu;H. Chauris;G. Lambaré;M. Noble
中科院分区：
文献类型：
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作者：
Shouhuai Xu;H. Chauris;G. Lambaré;M. Noble
常见的图像面板通常用于基于偏移的速度分析和基于偏移的AVO分析。共偏移距图像道集相对于共炮点图像道集的优点现在已经得到了很好的确立[4]，但在复杂模型的情况下其质量也很差[3]。当在渐近线性化逆理论的框架中分析问题时，可能会出现这种失败的原因[7，6]。我们在这里提出了一个分析的相关性的共同图像道集分析的情况下，速度模型与三重射线场。我们表明，个人共同拍摄或共同偏移可能会提供不一致的图像的地下，我们提出了一个战略，共同anale成像避免了前伪影。针对二维复杂Marmousi数据集，对共炮检距、共炮检距和共角成像道集进行了对比分析。
Common image panels are commonly used for migration based velocity analysis and for migration based AVO analysis. The advantages of common offset image gather with respect to common shot image gathers are now well established [4] but also their poor quality in case of complex models [3]. The reasons of this failure may appear when the problem is analyzed in the frame of the asymptotic linearized inverse theory [7, 6]. We propose here an analysis of the relevance of common image gather analysis in case of velocity models with triplicated ray fields. We show that individual common shot or common offset may provide inconsistent images of the subsurface, and we propose a strategy for common anale imaging avoiding the former artefacts. Comparisons of common shot, common offset and common angle image gathers are presented for 2D complex Marmousi dataset.