| 地震波频散效应与反Q滤波相位补偿 |
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| 引用本文： | 张固澜,贺振华,王熙明,张建军,张彦斌,李飞.地震波频散效应与反Q滤波相位补偿[J].地球物理学报,2014,57(5):1655-1663. |
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| 作者姓名： | 张固澜 贺振华 王熙明 张建军 张彦斌 李飞 |
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| 作者单位： | 1. 成都理工大学油气藏地质与开发工程国家重点实验室, 成都 610059;2. 中国石油集团东方地球物理公司新兴物探开发处, 河北 涿州 072751 |
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| 基金项目： | 国家自然科学基金项目(41174114)资助 |
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| 摘 要： | 本文以Futterman提出的地震波振幅衰减和相速度频散表达式为基础，从井震匹配的角度出发，推导了不进行反Q滤波、仅反Q滤波振幅补偿、仅反Q滤波相位补偿，以及反Q滤波相位与振幅同时补偿四种情况下，地震波速度频散与相速度及地震记录振幅谱间的表达式，并从理论上说明了反Q滤波相位补偿的必要性.通过相同观测系统，炸药震源和可控震源分别激发采集的零偏移距VSP资料实例，验证了本文所推导的速度频散表达式的合理性；通过井震标定实例，进一步说明了反Q滤波相位补偿，可有效消除地震子波速度频散，提升地面地震资料与零偏移距VSP走廊叠加剖面的匹配度，最终提高地震资料成果的可信度.
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| 关 键 词： | 相速度 频散 群速度 井震标定 反Q滤波 相位补偿 零偏移距VSP |
| 收稿时间： | 2013-11-07 |
Seismic wave dispersion effects and inverse Q-filter phase compensation |
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| ZHANG Gu-Lan,HE Zhen-Hua,WANG Xi-Ming,ZHANG Jian-Jun,ZHANG Yan-Bin,LI Fei.Seismic wave dispersion effects and inverse Q-filter phase compensation[J].Chinese Journal of Geophysics,2014,57(5):1655-1663. |
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| Authors: | ZHANG Gu-Lan HE Zhen-Hua WANG Xi-Ming ZHANG Jian-Jun ZHANG Yan-Bin LI Fei |
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| Institution: | 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China;2. BGP, CNPC, Zhuozhou Hebei 072751, China |
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| Abstract: | Basing on the expression of amplitude attenuation and phase velocity dispersion proposed by Futterman, and considering the well-seismic matching, we derived the expression of seismic wave velocity dispersion between phase velocity and amplitude spectrum for the following four cases: without inverse Q-filter; with only inverse Q-filter amplitude compensation, with only inverse Q-filter phase compensation, with inverse Q-filter phase and amplitude compensation, and explained the necessity of inverse Q-filter phase compensation in theory. Through the zero-offset VSP data example of dynamite and vibroseis source with the same acquisition geometry, we verified the velocity dispersion expression derived in this paper. Through the example of well-seismic calibration, we further illustrated that inverse Q-filter phase compensation can effectively eliminate seismic wave velocity dispersion, enhance well-seismic matching, finally improve the reliability of surface seismic data. |
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| Keywords: | Phase velocity Dispersion Group velocity Well-seismic calibration Inverse Q-filter Phase compensation Zero-offset VSP |
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