| 复杂构造叠后逆时深度偏移 |
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| 引用本文： | 张文生,张关泉,郝现军.复杂构造叠后逆时深度偏移[J].石油物探,1998,37(4):55-63. |
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| 作者姓名： | 张文生 张关泉 郝现军 |
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| 作者单位： | 中国科学院计算数学与科学工程计算研究所!北京，100080 |
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| 摘 要： | 本文从三维波动方程出发，导出了用于三维叠后逆时偏移的无层间反 波动方程，并给出了其数虎法和稳定性条件。
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| 关 键 词： | 叠后深度偏移 复杂构造 地震勘探 地震资料 |
| 收稿时间： | 1997-10-27 |
| 修稿时间： | 1998-1-9 |
Poststack reverse-time depth migration for complex structures |
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| Zhang Wensheng.Poststack reverse-time depth migration for complex structures[J].Geophysical Prospecting For Petroleum,1998,37(4):55-63. |
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| Authors: | Zhang Wensheng |
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| Affiliation: | Institute of Computational Mathematics and Scientific Engineering Computing, Chinese Academy of Sciences, Beijing 100080 |
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| Abstract: | Starting from the 3-D wave equation, we derive a wave equation which avoids interlayer reflections and can be applied to 3-D poststack reverse-time migration. And we give its numerical algorithm and the stability condition. The migration calculations for a series of 2-D and 3-D models prove the correctncss and effectiveness of the method. Compared with the conventional depth extrapolation migration methods, the method has good preclsion, expends small computational amount, has no dip restriction, avoids the evanescent wave energy, and is adapted to both vertical and lateral velocity variations. Thus it is an effective method for imaging 3-D complex structures. |
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| Keywords: | reverse time poststack depth migration complex structure pseudospectral method |
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