地震数据Q吸收补偿应用研究

英文篇名：Application Studies on Q absorption and compensation for seismic data
中文刊名：石油地球物理勘探
英文刊名：Oil Geophysical Prospecting
作者：李合群 ; 孟小红 ; 赵波
英文作者：Li He-qun1 ; 2 ; Meng Xiao-hong1 and Zhao Bo2.1.China University of Geosciences ; Beijing City ; 100083 ; China2.BGP Inc.of CNPC ; Zhuozhou City ; Hebei Province ; 072751 ; China
中文关键词：Q吸收补偿 ; 高频噪声 ; 补偿结果 ; 信号保真 ; 提高分辨率
英文关键词：Q absorption and compensation ; high frequency noise ; compensation result ; signal preservation ; raising resolution
出版日期：2010-04-15
机构：中国地质大学(北京);东方地球物理公司;
年：2010
期：02
出版单位：石油地球物理勘探

摘要

如今地震数据Q吸收补偿技术在实际应用中主要面临如下三方面的问题:地层品质因子Q的准确估算、Q吸收补偿中的高频噪声控制以及Q吸收补偿结果评价。为此本文提出为了获得更好的补偿效果,补偿算子的振幅随频率的变化需要具有更灵活的选择,以适应输入数据信噪比随频率的变化。通过理论数据和野外数据应用结果分析,总结了实际数据Q吸收补偿结果的评价方法,同时展示了Q吸收补偿技术在信号保真性以及提高分辨率方面要优于目前常用的统计性反褶积技术。
Nowadays the seismic data Q absorption and compensation technique is facing 3 challenges, they are accurate estimation of Q factor, high frequency noise control in Q absorption and compensation and the evaluation for the results of Q absorption and compensation respectively. For better compensation effects, it is suggested in this paper that the selection of compensation operator’s amplitude change with frequency needs to be more flexible so that it can fit the signal to noise ratio’s change with the frequency for the input data. Through analysis for application of theoretical data and field data, the evaluation method for Q absorption and compensation of field data was summarized, it is revealed that regarding signal fidelity and raising resolution, the Q absorption and compensation technique is superior to statistic deconvolution technique which is currently being used in routine seismic data processing.

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