为了研究地震资料的相位与地层识别的关系,在模型正演的基础上,分别就90°相位与零相位地震资料分析了地震反射与地层的对应关系和薄层间的子波旁瓣效应.对于厚度小于1/4波长的地层,90°相位旋转可使地震资料取得更高的识别效果.讨论了相位转换技术的可行性,相位转换技术适用于牛83井区浊积岩的研究,相位转换后的振幅可与波阻抗结合起来用于研究浊积岩储层的分布.%In order to study the relation between the phases of seismic data and the strata identification, the corresponding relation between the seismic reflection and the strata and furthermore the effects of wavelet side lobes a-mong thin strata are analyzed respectively for the seismic data with 90?phase and 0?phase on the basis of forward models. For the strata with the thickness less than 1/4 wavelength, 90?phase rotation can achieve much higher i-dentification results. The feasibility of phase conversion technique is discussed; the conversion is adaptable to the studies of the turbidite in Niu-83 Well-block. Combined with the wave impedance, the amplitude after the conversion can be used to study the distribution of turbidite reservoir.
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