Abstract:Inverse Q filtering based on inversion is a commonly used method of seismic wave absorption compensation. This method improves the stability of inversion by using L2 norm regularization as a vertical constraint. However,it is easily disturbed by noises, and noises would reduce the accuracy and stability of inversion. This paper proposes a global-constrained absorption compensation me-thod based on inversion. The method first calculates an error operator to predict seismic signals, and then adds it as a lateral-constrained operator to the vertical-constrained absorption compensation system. This expends the single-trace approach to a multi-trace algorithm. The inversion-based global-constrained absorption compensation method has stronger noise suppresion and stability, and it can effectively reduce the amplification effect of compensation on high-frequency noises, improve the seismic resolution and preserve the spatial conti-nuity of seismic event. Tests on model data and actual data have confirmed the effectiveness of this method.
刘金涛, 王孝, 王小卫, 苏勤, 刘梦丽, 袁焕. 全局约束反演多道吸收补偿方法[J]. 石油地球物理勘探, 2021, 56(2): 273-282.
LIU Jintao, WANG Xiao, WANG Xiaowei, SU Qin, LIU Mengli, YUAN Huan. Multi-channel absorption compensation method based on global constrained inversion. Oil Geophysical Prospecting, 2021, 56(2): 273-282.
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