| 基于峰值频率的薄层厚度计算公式及其近似(英文) |
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| 引用本文： | 孙鲁平,郑晓东,李劲松,首皓.基于峰值频率的薄层厚度计算公式及其近似(英文)[J].应用地球物理,2009,6(3):234-240. |
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| 作者姓名： | 孙鲁平 郑晓东 李劲松 首皓 |
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| 作者单位： | 中国石油勘探开发研究院,北京,100083 |
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| 基金项目： | supported by National Key S&T Special Projects of Marine Carbonate 2008ZX05000-004; CNPC Projects 2008E-0610-10 |
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| 摘 要： | 调谐厚度范围内薄层厚度定量预测一直是地震勘探面临的挑战之一,目前多数讨论仅限于顶底反射系数等幅反极性的薄层,对于其他薄层类型尚无系统研究.本文将所有薄层划分为四类:等幅反极性薄层、不等幅反极性薄层、等幅同极性薄层、不等幅同极性型薄层;通过理论推导得到薄层地震峰值频率与厚度关系的一般表达式,针对该式为一个复杂非线性隐式、难于直接应用求取薄层厚度的难题,采用三角函数的泰勒展开式进行简化,给出每类薄层厚度定量估算的近似公式,并系统讨论了各阶近似公式的精度.与传统的利用振幅信息求取薄层厚度的方法相比,本文方法的精度更高,且不受顶底反射系数绝对大小的影响,便于实际应用.
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| 关 键 词： | 薄层 定量计算 峰值频率 楔状模型 |
Thin-bed thickness calculation formula and its approximation using peak frequency |
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| Luping Sun,Xiaodong Zheng,Jingsong Li,Hao Shou.Thin-bed thickness calculation formula and its approximation using peak frequency[J].Applied Geophysics,2009,6(3):234-240. |
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| Authors: | Luping Sun Xiaodong Zheng Jingsong Li Hao Shou |
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| Institution: | Sun Luping1,Zheng Xiaodong1,Li Jingsong1,, Shou Hao11.Research Institute of Petroleum Exploration , Development,Beijing 100083. |
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| Abstract: | Quantitative thickness estimation below tuning thickness is a great challenge in seismic exploration.Most studies focus on the thin-beds whose top and bottom reflection coefficients are of equal magnitude and opposite polarity.There is no systematic research on the other thin-bed types.In this article,all of the thin-beds are classified into four types:thin-beds with equal magnitude and opposite polarity,thin-beds with unequal magnitude and opposite polarity,thin-beds with equal magnitude and identical pola... |
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| Keywords: | thin-bed quantitative thickness calculation peak frequency Taylor expansion approximation |
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