Migration methods for blended seismic data of multi-source

Multi-source seismic technology is an efficient seismic acquisition method and technology, from which a blended seismic data of multiple sources is obtained. Based on the propagation principle of blended seismic wave-fields and the linear stacking principle of seismic wave-fields, two types of migration methods for multi-source seismic data are presented in this paper. In the 1st method, the multi-source seismic data is separated into respective seismic data of single source, which can be processed with the conventional migration method. The 2 method is the direct migration of the blended seismic data. Ideal and satisfactory results are obtained by applying the two kinds of migration methods to the numerical simulative blended seismic data, which show the correctness and effectiveness of the proposed methods, the direct migration method has a higher computational efficiency than migration after separation.