| 共中心道集中品质因子的估计及应用 |
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| 引用本文： | 陈爱萍,邹文,刘天佑.共中心道集中品质因子的估计及应用[J].勘探地球物理进展,2004,27(1):32-34. |
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| 作者姓名： | 陈爱萍 邹文 刘天佑 |
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| 作者单位： | 中国地质大学地球物理与空间信息学院,湖北武汉,430074 |
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| 摘 要： | 品质因子Q的准确估计是叠前叠后地震数据处理及AVO分析的关键环节，通常从垂直地震数据或叠后地面地震数据中估算出品质因子Q的值，然后再进行衰减补偿。采用一种新的从共中心点道集中估算品质因子Q的方法,该方法由沿着偏移距和垂直时间方向的因子值和地震数据峰值频率变化之间的关系，由此用剥层法估算层品质因子。由估算出的层品质因子值对实际资料进行衰减补偿，得到了较好的应用效果。
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| 关 键 词： | 品质因子 峰值频率 均方根品质因子 层品质因子 反Q滤波 |
| 文章编号： | 1671-8585(2004)01-0032-03 |
| 收稿时间： | 2003-6-5 |
| 修稿时间： | 2003-10-14 |
Estimation of quality factor from CMP gathers and its application |
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| Chen Aiping,Zou Wen,Liu Tianyou.Estimation of quality factor from CMP gathers and its application[J].Progress in Exploration Geophysics,2004,27(1):32-34. |
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| Authors: | Chen Aiping Zou Wen Liu Tianyou |
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| Affiliation: | (Faculty of Geophysics and Spatial Information, China University of Geosciences, Wuhan 430074, China) |
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| Abstract: | Exact quality factor (Q-factor) is very important for pre-and post-stack seismic data processing and AVO analysis. Q -factors are commonly estimated from vertical-seismic-profile data or post-stack surface seismic data, and then compensated for attenuation. A new method for estimating Q -factors from CMP gathers is adopted in this paper, which estimates the Q-factors with layer-stripping approach based on the relation between Q-factors and seismic peak frequency variations both along offset and vertical time directions. Seismic data are then compensated for attenuation using the estimated Q -factors. Desired results have been achieved. |
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| Keywords: | quality factors peak frequency mean-square-root quality factors interval quality factors inverse Q filtering |
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