Integrated Approach to Acquisition Geometry Analysis
Integrated Approach to Acquisition Geometry Analysis
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DOI：
10.1190/1.2144298
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
E. Veldhuizen;G. Blacquière
中科院分区：
文献类型：
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作者：
E. Veldhuizen;G. Blacquière
从在数据处理之后从地震数据获得的地下图像，应该可以检索关于地下目标的属性的信息。然而，图像可能会受到采集几何结构的影响：它包含一个采集足迹，这可能会阻碍地下表征。通常，这种足迹不能直接预测，特别是当地下结构复杂时。聚焦波束分析方法能够正确评估采集几何结构、覆盖层和偏移的影响。该方法符合波动理论，因此能够对目标处的图像质量进行定量分析。分析结果可用于在处理和解释期间考虑采集足迹，或用于判断所使用的（或将要使用的）测量几何是否满足要求。这些要求来自于所追求的目标。这意味着采集几何设计的综合方法，其中考虑了采集、成像和表征的所有阶段。在本文中，墨西哥湾Ziggy模型的数值版本是用来预测图像质量的“全覆盖”的几何形状与平行的海洋几何形状。对反演的角度依赖振幅的影响进行了研究。
From a subsurface image that is obtained from seismic data after data processing, it should be possible to retrieve information about the properties of the subsurface target. However, the image can be biased by the acquisition geometry: it contains an acquisition footprint, which can obstruct the subsurface characterization. Often, this footprint cannot be predicted straightforwardly, especially when the subsurface structure is complex. The method of focal beam analysis enables a proper evaluation of the influence of the acquisition geometry, overburden, and migration. This method is in accordance with wave theory, and it therefore enables a quantitative analysis of image quality at the target. The outcome of the analysis can be used either to take the acquisition footprint into account during processing and interpretation, or to judge whether the survey geometry that is used (or that is to be used) meets the requirements. These requirements follow from the goal that is pursued. This implies an integrated approach to acquisition geometry design, where all stages of acquisition, imaging, and characterization are considered. In this paper a numerical version of the Gulf of Mexico Ziggy model is used to predict image quality for a ‘full coverage’ geometry versus a parallel marine geometry. The effect on inversion of angle-dependent amplitudes is investigated.