新的3D地震解释技术,如频谱分解和相干体,提高了第三纪岩化作用弱的岩石地层特征解释,但在更老、固结更紧密的沉积岩上的应用效果尚未见记载。相干体技术通过计算区域地震道相似性对地震不连续性进行成像。频谱分解技术用离散傅立叶变换对时间厚度变化进行成像。在频谱分解这项技术中,由覆盖在目的层上的地质层短时窗计算振幅谱,并用该分析时 New 3D seismic interpretation techniques, such as spectral decomposition and coherence, improve interpretation of lithofacies characterized by weak Tertiary lithologies but no evidence of their effect on older, more tightly-knit sediments. Coherence technique images seismic discontinuities by calculating the similarity of regional seismic traces. Spectral decomposition techniques use discrete Fourier transform to image temporal thickness variations. In the spectral decomposition technique, the amplitude spectrum is calculated from the geologic short-time window covering the target layer, and with this analysis