Application of a Variational Mode Decomposition-Based Instantaneous Centroid Estimation Method to a Carbonate Reservoir in China

Application of a Variational Mode Decomposition-Based Instantaneous Centroid Estimation Method to a Carbonate Reservoir in China
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基于变分模态分解的瞬时质心估计方法在中国碳酸盐岩储层中的应用

DOI:
10.1109/lgrs.2017.2788467
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发表时间:
2018-01
影响因子:
4.8
通讯作者:
Juan Zhou
Juan Zhou
中科院分区:
工程技术2区
文献类型:
--
作者:
Ya-Juan Xue;Hao-Kun Du;Jun-Xing Cao;Da Jin;Wei Chen;Juan Zhou

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提出了一种基于变分模式分解(VMD)的瞬时质心法油气检测新技术。它揭示了频率依赖的振幅异常,可能反映了一些细节深埋在固有模式函数(IMF)在特定的频带。来自每个IMF的瞬时幅度和瞬时频率信息用于生成每个IMF瞬时质心。采用加权相关方法生成基于VMD的地震道瞬时质心体。模型试验和中国某碳酸盐岩储层的实际资料表明,基于VMD的瞬时质心方法能够提供更好的油气倾向解释,具有更高的分辨率和精度。将基于VMD的瞬时质心法与短时傅里叶变换、连续小波变换和叠前波阻抗反演技术进行对比,结果表明该方法更方便、更能有效地针对气藏。这封信提出了一个补充的方法,目前的方法用于提取频率相关的振幅异常信息。
A novel hydrocarbon detection technique named the variational mode decomposition (VMD)-based instantaneous centroid method is proposed in this letter. It reveals frequency-dependent amplitude anomalies that may reflect some details deeply buried within the intrinsic mode functions (IMFs) in particular frequency bands. Instantaneous amplitude and instantaneous frequency information from each IMF are used to generate each IMF instantaneous centroid. A weighted correlation scheme is employed to generate the VMD-based instantaneous centroid volume for a seismic trace. Model testing and field data from a carbonate reservoir in China illustrate that the VMD-based instantaneous centroid method can provide a better hydrocarbon-prone interpretation with a higher resolution and accuracy. Comparisons between the VMD-based instantaneous centroid method and the short-time Fourier transform, and continuous wavelet transform and prestack wave impedance inversion technology indicate that the proposed method is more convenient and can effectively target gas reservoirs. This letter presents a complementary approach to current methods used to extract frequency-dependent amplitude anomaly information.
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