Multiple suppression method based on non-residual time difference

The invention relates to a multiple suppression method based on non-residual time difference, and belongs to the technical field of petroleum and natural gas exploration. According to the method, the inclination angle difference of the multiple waves and the primary waves on the stacked section is utilized, and the multiple waves of the near channel are suppressed by adopting an inclination angle filtering mode on the single section of the near channel, so that the defect of suppressing the multiple waves by a conventional residual time difference method is overcome, the imaging effect of a deep weak reflection stratum covered by the multiple waves is improved, and the method has a good improvement effect on the imaging effect of disordered deep inner curtain reflection with strong multiple wave energy and weak effective reflection, can effectively suppress near-channel multiple waves, can protect signals of primary waves, and can meet the requirements of subsequent migration processing on data regularization