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高信噪比地震资料是高精度储层预测的基础,而地震噪声的消除存在于地震资料处理的各个环节中,但这些中间成果未加以充分利用而造成人力及财力的浪费是必须考虑的实际问题。针对这一问题,利用物理意义明确的频率域估算地震资料信噪比方法对地震数据进行计算,采用改进的频谱法计算信噪比,并优选信噪比计算的关键参数,以及给出信噪比数据体的实现过程。经实际资料中的应用发现:地震解释标准层段信噪比总体较高;断裂发育区信噪比数值低。而这些断裂发育区域只有通过构造分析进行推断,而不能在地震剖面上直接识别。信噪比的应用为地震标准层及断裂的检测提供了一个新的方法,它包含了与地层及断裂有关的信息。该方法在构造变化识别、断层及裂缝检测方面取得了成果。
High S / N seismic data is the basis of high-precision reservoir prediction, and the elimination of seismic noise exists in all aspects of seismic data processing. However, the waste of human and financial resources caused by incomplete utilization of these intermediate results must be considered. problem. To solve this problem, the seismic data is calculated by using the frequency-domain seismic data SNR method in the frequency domain with clear physical meaning. The improved spectrum method is used to calculate the signal-to-noise ratio and the key parameters for SNR calculation are optimized. Than the realization of the body of data. According to the actual data, it is found that the signal-to-noise ratio of the standard interval of seismic interpretation is generally high, and the signal-to-noise ratio of the fracture development zone is low. However, these fault zones are inferred only by tectonic analysis and can not be directly identified on seismic sections. The application of signal-to-noise ratio provides a new method for the detection of seismic standards and faults, which contain information related to the formation and faults. The method has achieved results in structural change detection, fault detection and fracture detection.