The Increasing Appeal of Single-Element Pneumatic Point Sources

Q3 Earth and Planetary Sciences
Marc Rocke, Carsten Udengaard, David Brookes, Curt Schneider
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引用次数: 0

Abstract

The resistance of low-frequency seismic energy to scattering and absorption, and its resulting ability to be recorded over long ray paths through attenuating media is well established. This relative resistance to scattering and attenuation makes it vital for capturing information with depth and offset, both for model-building and illumination. There is likely to be no better example of this than modern long-offset OBN (ocean bottom node) surveys of the Gulf of Mexico – however the importance of high-quality low frequencies in unravelling imaging challenges below complex overburden such as shallow gas, carbonates, salt, and volcanics is well documented. Consequently, interest in recording low frequencies in the field extends beyond OBN surveys to include single-vessel and multi-vessel towed-streamer designs. We have seen strong focus on designing sources that produce rich low frequencies over the last decade as a result.
单元件气动点源的吸引力日益增加
低频地震能量对散射和吸收的抵抗力,以及由此产生的通过衰减介质的长射线路径的记录能力已经得到了很好的证实。这种对散射和衰减的相对抵抗使得它对于捕获具有深度和偏移的信息至关重要,无论是用于模型构建还是照明。在这方面,可能没有比墨西哥湾的现代长偏移OBN(海底节点)调查更好的例子了——然而,在复杂覆盖层(如浅层天然气、碳酸盐、盐和火山)下,高质量低频在解开成像挑战方面的重要性得到了充分的证明。因此,对现场低频记录的兴趣不仅限于OBN调查,还包括单船和多船拖曳拖缆设计。因此,在过去的十年中,我们已经看到了对设计产生丰富低频的信号源的强烈关注。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
First Break
First Break Earth and Planetary Sciences-Geophysics
CiteScore
1.40
自引率
0.00%
发文量
98
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