【摘要】 波形分析技术是储层地震预测的重要方法之一,建立表征地震反射波形变化的样本道是实现波形分类的关键。将分数阶导数的概念引入到地震反射波形分类中,由地震子波的分数阶导数构成完备的波形集合,与每一道地震反射波形匹配,可实现对地震波形的精确分类。模型和实际资料的处理效果表明该方法能准确表征地震波形在横向上的变化,其变化点能够定量指示出异常的准确位置,划分不同的反射界面类型,描述界面上下的岩性结构特征和地质构造的变化。更多还原

【Abstract】 The waveform analysis is one of the important seismic prediction methods for reservoir. It is the key of waveform classification that establishing sample trace for characterizing seismic reflected waveform changes. The concept of fractional order derivative is introduced to seismic reflected waveform classification. Use the fractional order derivative of seismic wavelet to constitute a complete set of waveform,thus it will be comparative to each seismic waveform. The seismic reflected waveform classification can be realized. The research of model and practical information proved that this method could be used to characterize the lateral changes of seismic waveforms accutately. Its variation can indicate the accurate positions of anomaly quantitatively,and divide types of seismic events,in which the change of lithology structural features and geological structure can be described.更多还原