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基于HHT方法的地层Q值补偿方法研究

颜中辉 徐华宁 李攀峰 刘鸿 杨佳佳 陈珊珊 杨传胜

颜中辉, 徐华宁, 李攀峰, 刘鸿, 杨佳佳, 陈珊珊, 杨传胜. 基于HHT方法的地层Q值补偿方法研究[J]. 海洋地质与第四纪地质, 2020, 40(1): 175-183. doi: 10.16562/j.cnki.0256-1492.2018100901
引用本文: 颜中辉, 徐华宁, 李攀峰, 刘鸿, 杨佳佳, 陈珊珊, 杨传胜. 基于HHT方法的地层Q值补偿方法研究[J]. 海洋地质与第四纪地质, 2020, 40(1): 175-183. doi: 10.16562/j.cnki.0256-1492.2018100901
YAN Zhonghui, XU Huaning, LI Panfeng, LIU Hong, YANG Jiajia, CHEN Shanshan, YANG Chuangsheng. Research of compensation method for formation Q value based on HHT method[J]. Marine Geology & Quaternary Geology, 2020, 40(1): 175-183. doi: 10.16562/j.cnki.0256-1492.2018100901
Citation: YAN Zhonghui, XU Huaning, LI Panfeng, LIU Hong, YANG Jiajia, CHEN Shanshan, YANG Chuangsheng. Research of compensation method for formation Q value based on HHT method[J]. Marine Geology & Quaternary Geology, 2020, 40(1): 175-183. doi: 10.16562/j.cnki.0256-1492.2018100901

基于HHT方法的地层Q值补偿方法研究


doi: 10.16562/j.cnki.0256-1492.2018100901
详细信息
    作者简介:

    颜中辉(1986—),男,硕士,助理研究员,主要从事地震资料处理、多波多分量研究,E-mail:zhonghui4564573@163.com

    通讯作者: 徐华宁,男,博士,教授级高工,主要从事海洋地球物理调查研究,E-mail:xuhuaning1973@163.com
  • 基金项目:  山东省自然科学基金培养基金项目“基于HHT变换的多波地震资料去噪应用研究”(ZR2015PD006);山东省自然基金博士基金 “地质约束下的重磁三维反演在南黄海盆地崂山隆起的应用”(ZR2016DB33);青岛海洋科学与技术国家实验室开放基金“多分量地震波逆时偏移拉伸校正及其并行”(QNLM2016ORP0206);国家自然科学基金青年基金“东海北部外陆架晚更新世以来两期古三角洲的时空展布特征及物源属性研究”(41706069)
  • 中图分类号: P631.4

Research of compensation method for formation Q value based on HHT method

More Information
  • 摘要: 常规的基于叠后地震资料的地层Q值补偿方法受数据平均效应的影响,Q值估算精度较低,导致保真性差,而HHT时频分析可以反映出信号的局部信息,基于以上原因,提出一种基于HHT方法的地层Q值补偿方法。首先应用HHT分频技术将浅层、中深层地震数据分成不同的频率范围,得到不同目标层频率尺度的地震数据;然后在HHT时频域内通过谱比法提取Q值;最后分别进行地层Q值振幅补偿和相位补偿。该方法针对不同的目标地层将地震数据分解成不同的频率尺度,避免了不同频率成分之间的干扰,而且可针对性处理目标层的频率信息,提高了地层Q值提取的稳定性。模型试算和实际资料应用表明,该方法能够有效地对振幅和相位进行补偿,使中深层反射波形得到恢复,主频提高,频带展宽,地震资料的品质得到提升。
  • 图  1  模型数据Q补偿前后的对比

    a. 补偿前的地震数据,b. 补偿后的地震数据。

    Figure  1.  Comparison of model seismic data before and after Q compensation

    a. Model data before compensation,b. Model data after compensation.

    图  2  模型数据Q补偿前后的波形显示对比

    a. 补偿前的波形显示,b. 补偿后的波形显示。

    Figure  2.  Waveform comparison of model seismic data before and after Q compensation

    a. Waveform before compensation,b. Waveform after compensation.

    图  3  基于HHT方法提取的地层Q值曲线

    Figure  3.  Formation Q-value curve extracted based on HHT method

    图  4  模型数据Q补偿前后的频谱对比

    Figure  4.  Spectrum comparison before and after model data Q compensation

    图  5  加噪的模型数据Q补偿前后的对比

    a. 补偿前的地震数据,b. 补偿后的地震数据。

    Figure  5.  Comparison of model seismic data with noise before and after Q compensation

    a. Model data before compensation,b. Model data after compensation.

    图  6  加噪的模型数据Q补偿前后的频谱对比

    Figure  6.  Spectrum comparison of model seismic data with noise before and after Q compensation

    图  7  基于HHT方法提取的地层Q值剖面

    Figure  7.  Formation Q-value profile extracted with HHT method

    图  8  实际地震数据Q补偿结果对比

    a. 补偿前的地震数据,b. 补偿后的地震数据。

    Figure  8.  Comparison of actual seismic data before and after Q compensation

    a. Seismic data before compensation, b. Seismic data after compensation.

    图  9  浅层数据Q补偿结果对比

    a. 补偿前的地震数据,b. 补偿后的地震数据。

    Figure  9.  Comparison of shallow data before and after Q compensation

    a. Seismic data before compensation,b. Seismic data after compensation.

    10  中深层数据Q补偿结果对比

    a. 补偿前的地震数据,b. 补偿后的地震数据。

    10.  Comparison of deep data before and after Q compensation results

    a.Seismic data before compensation,b. Seismic data after compensation.

    11  实际数据Q补偿前后频谱对比

    11.  Spectrum comparison before and after Q compensation

    12  浅层数据Q补偿前后频谱对比

    12.  Spectrum comparison of shallow data before and after Q compensation

    13  中深层数据 Q补偿前后频谱对比

    13.  Spectrum compensation before and after Medium-deep data Q-compensation

    14  噪音成分Q补偿前后频谱对比

    14.  Spectrum comparison before and after noise component Q-compensation

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