| 稳定的Born近似叠前深度偏移方法 |
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| 引用本文： | 陈生昌 曹景忠 等. 稳定的Born近似叠前深度偏移方法[J]. 石油地球物理勘探, 2001, 36(3): 291-296 |
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| 作者姓名： | 陈生昌 曹景忠 等 |
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| 作者单位： | 同济大学海洋地质重点实验室(陈生昌,曹景忠),同济大学海洋地质重点实验室(马在田) |
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| 摘 要： | 本文针对HuangLJ等（1999）在“扩展的局部Born Fourier偏移方法”一文中提出的散射波场计算公式在强横向变速介质的不稳定性,提出了一种新的Born近似散射场计算公式,并把该公式应用于波场递归于推过程中,进而得到一种稳定的Born近似叠前深度偏移方法。与Split-Step Fourier方法和Phase-Screen方法相比,本方法对Marmousi模型炮集数据的偏移处理取得了良好的结果。本文提出了的Born近似散射场计算公式可扩大Born近似的应用范围,对散射波扬的计算有一定的理论意义应用价值。
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| 关 键 词： | 叠前深度偏移方法 散射波场 波场外推 Born近似 地震勘探 |
Stable pre-stack depth migration method with Born approximation. |
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| Chen Shengchang,Cao Jingzhong and Ma Zaitian. Laboratory of Marine Geology,MOE,Tongji University,Shanghai,,China. Stable pre-stack depth migration method with Born approximation.[J]. Oil Geophysical Prospecting, 2001, 36(3): 291-296 |
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| Authors: | Chen Shengchang Cao Jingzhong Ma Zaitian. Laboratory of Marine Geology MOE Tongji University Shanghai China |
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| Affiliation: | Chen Shengchang,Cao Jingzhong and Ma Zaitian. Laboratory of Marine Geology,MOE,Tongji University,Shanghai,200092,China |
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| Abstract: | Aimed at instability of calculation formula for scattered wavefield in a medium with strong lateral velocity variation proposed by Huang's article "Expanded local Born Fourier migration method", the paper presented a new Born approximate calculation formula for scattered wavefield, applied the formula to recursive extrapolated processing of wavefield and then obtained a stable Born approximation pre-stack depth migration method. Comparing with Split-Step Fourier method and Phase-Screen method, the method achieved a good results in migration processing of shot gather data for Marmousi model. The approximation formula for scattered wavefield introduced in the paper can broaden the scope of using Born approximation. |
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| Keywords: | pre-stack depth migration scattered wavefield wavefield extra-polation Born approximation |
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