关键词: 剩余多次波衰减, 信号匹配重构, 振幅拟合, 近道多次波, 叠前道集

Abstract: To solve the problem that the filtering methods, such as f-k and τ -p, cannot effectively attenuate near offset multiple, this paper comes up with a method for reconstruction of amplitude fitting and signal matching to suppress residual multiple. Combined with the filtering method, this method can effectively attenuate multiple from different generation mechanisms with high calculation efficiency and is suitable for huge magnitude of 3D data. Application of the model and actual data shows that using this method for suppression of residual multiple can effectively improve imaging quality of profile and reduce the difficulty for interpretation. Meanwhile, it can also improve CRP gather transverse energy relation so as to provide good basic data for subsequent use of prestack gather for AVO analysis