| 速度横向变化对小幅度构造解释的影响 |
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| 引用本文： | 严又生.速度横向变化对小幅度构造解释的影响[J].石油地球物理勘探,1994,29(6):758-768,798. |
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| 作者姓名： | 严又生 |
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| 作者单位： | 石油地球物理勘探局物探地质研究院, 072750 |
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| 摘 要： | 本文通过构造几种速度呈横向变化的小幅度构造二维模型,用射线追踪法计算反射旅行时和相应的合成地震记录,从中分析速度的横向变化对小幅度构造解释的影响程度及规律。文中实例说明,在速度研究和变速作图过程中,不仅要重视速度场在已知点( 井点)的纵向精度,还应重视速度场平面分布趋势的合理性。
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| 关 键 词： | 二维构造模型 小幅度构造 速度梯度 变速作图 速度场 |
| 收稿时间： | 1994-02-02 |
Influence of lateral velocity variation upon interpretation of low-amplitude structure |
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| Yan Yousheng.Influence of lateral velocity variation upon interpretation of low-amplitude structure[J].Oil Geophysical Prospecting,1994,29(6):758-768,798. |
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| Authors: | Yan Yousheng |
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| Affiliation: | Geophysical Reseaech Institute under Bureau of Oil Geophysical Prospecting, P. O. box 11-3 Zhuozhou City Hebei Province, Postcode: 072750 |
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| Abstract: | The regular influence of lateral seismic velocity variation upon the interpretation of low-amplitude structure is ascertained by analysing both reflection times and corresponding synthetic seismograms which are computed with the use of both ray tracing method and some 2D models of low-amplitude sturctures having lateral velocityvaried media. It is illustrated that in velocity research and velocity-varied mapping,people must pay more attention to both accurate vertical velocity field at a borehole point and reasonable lateral velocity field. |
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| Keywords: | 2D structure model low-amplitude structure velocity gradient velocity-varied mapping velocity field |
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