基于叠加速度分析的叠前随机噪音和野值压制技术

进行叠前野值、随机噪音以及某些弱相干噪音压制技术的研究是低信噪比资料处理以及高分辨率资料处理中一项有意义的重要工作。将基于速度的波场变换技术与叠前压制噪音技术结合起来,将叠前相应道集变换到有效信号易于分离的新道集中,然后采用线性多项式分步拟合技术对校正后的CDP道集沿空间方向进行滤波,从而有效压制噪音。理论模型和实际资料的处理结果表明,该方法行之有效。

Pre-stack Random Noise and Abnormal Velocity Suppression Technologies Based on Stack Velocity Analysis

Suppression of pre - stack abnormal velocity and random noise are very important in low signal - to - noise ratio seismic processing and high resolution seismic processing. Through combining velocity - based wave field transformation technology with pre - stack noise suppression technology, we transform the corresponding pre - stack trace gathers into new stack gathers that the effective signals can be separated easily, then perform filtration of the corrected CDP trace gather by using linear polynomial multi - stage fitting technology to effectively suppress noise. Theoretical model and real data processing show that this method is viable.