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多次波一直以来是地震资料处理的难点,不存在某种方法能压制所有地区不同类型的多次波,在实际生产中不仅要根据其特点,而且还需考虑原始地震资料的品质来选择合适的多次波压制方法。本文以塔里木盆地不同品质的地震资料为例,分析该地区多次波发育的特征,在充分认识其特征的基础上选取最佳的多次波压制方法。根据地震资料品质的不同采取不同的组合方法压制多次波,对于覆盖次数较高的地震资料采用拉东变换结合内切除的方法;对于信噪比偏低的地震资料采用拉东变换结合τ-p域预测反褶积的方法,在实际生产实践中取得了较为理想的效果。
Multiple waves have always been the difficulty of seismic data processing. There is no certain way to suppress different types of multiple waves in all regions. In actual production, not only the characteristics of the original seismic data but also the quality of the original seismic data should be chosen The multiple suppression method. Taking the seismic data of different qualities in the Tarim Basin as an example, this paper analyzes the characteristics of multiple waves in the region and selects the best multiple suppression method based on full understanding of its characteristics. According to the different seismic data quality, different combination methods are used to suppress multiple waves. For the seismic data with high coverage, the method of Radon transform combined with internal excision is adopted. For seismic data with low signal-to-noise ratio, the Radon transform combined with τ- The method of p-domain prediction deconvolution has achieved satisfactory results in practice.