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Joint inversion method for interval quality factor based on amplitude and phase information

机译：基于幅度和相位信息的区间质量因子联合反演方法

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摘要

Estimating the quality factor Q accurately significantly improves the seismic data resolution and reservoir characterization. The commonly used log-spectral ratio method uses least-squares fitting to obtain Q values and involves only the amplitude information of seismic data while neglecting phase information. This paper proposes a joint interval Q inversion method based on the spectral ratio method and employs both amplitude and phase information to improve the accuracy. Based on the assumption that Q is independent of frequency, the nonlinear relation between the Q value and the two types of information is jointly used to construct an objective function, which clarifies the quantitative relation between amplitude spectrum, phase information, and Q value. The interval Q value can be inverted by calculating the minimum value of the objective function. The model test exhibits that the proposed method has higher precision and stability than the spectral ratio method; furthermore, the application to field data demonstrates that accurate Q inversion results are consistent with reservoir characteristics.
机译：准确估算品质因数Q可以显着提高地震数据的分辨率和储层特征。常用的对数谱比率法使用最小二乘拟合获得Q值，并且只涉及地震数据的幅度信息，而忽略了相位信息。本文提出了一种基于谱比法的联合区间Q反演方法，并利用幅度和相位信息来提高精度。基于Q与频率无关的假设，Q值与两种信息之间的非线性关系共同用于构建目标函数，从而阐明了振幅谱，相位信息和Q值之间的定量关系。可以通过计算目标函数的最小值来反转间隔Q值。模型测试表明，该方法比谱比法具有更高的精度和稳定性。此外，对现场数据的应用表明，准确的Q反演结果与储层特征一致。

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  • 来源
    《应用地球物理（英文版）》 |2019年第2期|199-208|共10页
  • 作者

    Cao Dan-Ping; Li Yue; Sun Wen-Guo; Liang Kai;

  • 作者单位

    School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China;

    Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;

    School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China;

    Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;

    School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China;

    School of Geosciences, China University of Petroleum (East China), Qingdao 266580, China;

    Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;

  • 收录信息 中国科学引文数据库(CSCD);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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