| 斜井三维VSP多波射线正演方法 |
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| 引用本文： | 邓颖华,丁拼搏,赵俊省,任仕超.斜井三维VSP多波射线正演方法[J].煤田地质与勘探,2011,39(4):59-63. |
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| 作者姓名： | 邓颖华 丁拼搏 赵俊省 任仕超 |
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| 作者单位： | 1. 成都理工大学信息工程学院地球探测与信息技术教育部重点实验室, 四川 成都 610059; |
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| 摘 要： | 基于费马原理和 Snell 定理，对三维 VSP两点射线追踪问题作了研究，给出了三维逐段迭代射线追踪算法的计算公式；同时考虑射线入射到界面时能量分配问题，探讨了三维介质条件下射线追踪计算方法。对斜井VSP三维任意起伏层状介质中多波进行正演模拟，结果表明:该方法可行性和有效性较高，计算速度快，且计算精度高。
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| 关 键 词： | 斜井 三维VSP 多波射线追踪 正演模拟 |
| 收稿时间： | 2010-11-02 |
3D VSP ray-traing method of multiwave forword modeling in deviated well |
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| Deng Yinghua,Ding Pinbo,Zhao Junsheng,Ren Shichao.3D VSP ray-traing method of multiwave forword modeling in deviated well[J].Coal Geology & Exploration,2011,39(4):59-63. |
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| Authors: | Deng Yinghua Ding Pinbo Zhao Junsheng Ren Shichao |
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| Institution: | 1. Key Laboratory of Earth Detection and Information Technology of the Ministry of Education, School of Information Engineering of Chengdu Polytechnic University, Chengdu 610059, China;2. School of Resources and Information of China University of Petroleum, Beijing 102200, China;3. Dagang Oil Field, Tianjin 300280, China |
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| Abstract: | Based on Snell law and Femat principle, the two point ray tracing method for three-dimensional VSP was studied, and the calculating formulas of 3D segment iterative ray-tracing algorithm was given, then the iterative ray-tracing in three-dimensional medium was conducted by taking energy characteristics of the seismic ray into account.Multiwave forward modeling of deviated well in 3D complex medium was carried out.The results of modeling showed that this algorithm is fast and its calculating precision is high. |
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