| 串珠状溶洞模型介质波动方程正演与偏移 |
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| 引用本文： | 吴永国,贺振华,黄德济.串珠状溶洞模型介质波动方程正演与偏移[J].地球物理学进展,2008,23(2):539-544. |
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| 作者姓名： | 吴永国 贺振华 黄德济 |
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| 作者单位： | 1. 东方地球物理公司采集技术支持部采集方法研究所,涿州,072751
2. 成都理工大学油气藏地质与开发工程国家重点实验室,成都,610059 |
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| 摘 要： | 为了揭示溶洞储层的地震波场特征,该文采用相移加插值波场延拓算子,该算子能适应介质速度横向变化和纵向变化、对地层无倾角限制、保振幅且可以避免层间多次波的产生.然后用该算子对根据某地区奥陶系储层溶洞的地质特征所设计的五个串珠状溶洞地质模型进行正演和偏移,并分析波场特征.溶洞储层模型数值模拟的结果揭示了在不同大小、形状、间距、分布位置等情况下溶洞地震波场特征,得出了关于串珠状溶洞介质地震波场特征的一些有意义的结论和认识.
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| 关 键 词： | 串珠状溶洞 数值模拟 波场延拓 |
| 文章编号： | 1004-2903(2008)02-0539-06 |
| 收稿时间： | 2007-12-9 |
| 修稿时间： | 2007年12月9日 |
Wave equation forward modeling and migration for beads-shaped corroded cave model |
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| WU Yong-guo,HE Zhen-hua,HUANG De-ji.Wave equation forward modeling and migration for beads-shaped corroded cave model[J].Progress in Geophysics,2008,23(2):539-544. |
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| Authors: | WU Yong-guo HE Zhen-hua HUANG De-ji |
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| Abstract: | To reveal the wave-field characters of cave reservoir,the paper adopt a phase-shift plus in interpolation wave-field extrapolation operator which can preserve amplitude and suppress inter-bed harmonic wave without restrictions horizontal land vertical changes of medium velocity and layer dip angle.The operator is then used in the forward modeling and migration on the five beads-shaped cave models that based on the geologic features of the corroded caves in an Ordovician reservoir and the resulting wave-field is analyzed.Numerical simulation of the beads-shaped caves show the wave-field features of beads-shaped caves reservoir in different size,different shape,different distance,different distribution position situations and obtain some significant the conclusions. |
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| Keywords: | beads-shaped cave numerical simulation wave-field continuation |
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