| 平移初至点走时动校正反演(英文) |
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| 引用本文： | 谭尘青,吴燕冈,韩立国,巩向博,崔杰.平移初至点走时动校正反演(英文)[J].应用地球物理,2011,8(3):217-224. |
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| 作者姓名： | 谭尘青 吴燕冈 韩立国 巩向博 崔杰 |
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| 作者单位： | 吉林大学地球探测科学与技术学院; |
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| 基金项目： | sponsored by the National Natural Science Foundation of China (No. 41074075) |
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| 摘 要： | 浅层长排列信号在动校正后出现动校拉伸,本文从走时公式的角度深入研究其产生机理,,论证了常规走时公式不能准确描述同一反射子波中所有采样点的走时,建立在子波中心点走时基础上的传统速度分析不能得到准确的动校正速度。通过理论推导重构了同一子波周期中各信号点的走时公式,进而提出基于初至点走时的动校正反演方法,其反演精度相对于传统方法得到了大幅提升。最终采用初至点走时对长排列记录进行整体搬家取得了无拉伸校平的结果,验证了所重构公式的正确性。
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| 关 键 词： | 走时公式 动校拉伸 初至点 速度分析 动校正反演 |
| 收稿时间： | 21 December 2006 |
Shifted first arrival point travel time NMO inversion |
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| Chen-Qing Tan,Yan-Gang Wu,Li-Guo Han,Xiang-Bo Gong,Jie Cui.Shifted first arrival point travel time NMO inversion[J].Applied Geophysics,2011,8(3):217-224. |
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| Authors: | Chen-Qing Tan Yan-Gang Wu Li-Guo Han Xiang-Bo Gong Jie Cui |
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| Institution: | Tan Chen-Qing 1,Wu Yan-Gang 1,Han Li-Guo 1,Gong Xiang-Bo 1,and Cui Jie 11.College of Geo-exploration science and technology,Jilin University,Changchun 130026,China. |
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| Abstract: | Serious stretch appears in shallow long offset signals after NMO correction.In this article we study the generation mechanism of NMO stretch,demonstrate that the conventional travel time equation cannot accurately describe the travel time of the samples within the same reflection wavelet.As a result,conventional NMO inversion based on the travel time of the wavelet's central point occurs with errors.In this article,a travel time equation for the samples within the same wavelet is reconstructed through our t... |
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| Keywords: | long offset NMO stretch first arrival point travel time equation NMO inversion |
| 本文献已被 CNKI SpringerLink 等数据库收录！ |
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