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在大规模3D地震勘探中,谱分解技术为利用地震数据和离散傅里叶变换(DET)对时间层厚度和不连续地质体进行成像和绘图提供了一种新方法。通过地震数据的离散傅里叶变换,将其转换到频率域,其振幅谱描述了时间层厚度的变化,而相位谱则反映了地质体的横向不连续性。这一技术已经应用于3D勘探中地层沉积环境的描述(例如河道砂和包括复杂断裂系统在内的构造环境)。
In large-scale 3D seismic exploration, spectral decomposition techniques provide a new method for imaging and mapping temporal thickness and discontinuous geological bodies using seismic data and Discrete Fourier Transform (DET). Through the discrete Fourier transform of seismic data, it is transformed into the frequency domain. The amplitude spectrum describes the change of the thickness of the time layer, while the phase spectrum reflects the lateral discontinuity of the geological body. This technique has been applied to the description of formation depositional environments in 3D exploration (eg channel sand and tectonic setting including complex fracture systems).