Fast multifrequency focal beam analysis for 3D seismic acquisition geometry
Fast multifrequency focal beam analysis for 3D seismic acquisition geometry
复制标题
针对 3D 地震采集几何结构的快速多频聚焦波束分析
DOI:
10.1190/geo2010-0327.1
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发表时间:
2012-02
期刊:
影响因子:
3.3
通讯作者:
Gerrit Blacquière
中科院分区:
文献类型:
--
作者:
Wei Wei;Fu Li-Yun;Gerrit Blacquière
A method for the efficient computation of multifrequency focal beams for 3D seismic acquisition geometry analysis has been developed. By computing them for all the frequency components of seismic data, single-frequency focal beams can be extended to multifrequency focal beams. However, this straightforward method involves considerable computer time and memory requirements, especially in complex media settings. Therefore, we propose a rapid 3D multifrequency focal beam method in which only a few single-frequency focal beam computations are followed by a number of smart interpolations. The 3D wavefield extrapolation in the focal beam analysis is conducted by the combined applications of a 3D degenerate Fourier migrator and a 3D Born-Kirchhoff interpolation operator, a process that reduces the computational cost for complex media. The multifrequency focal beam analysis is applied to a 3D model from an oil field of China, demonstrating how spatial sampling differences affect seismic imaging.
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1987
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10.1190/1.9781560801801
发表时间:
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