HYBRID DEBLENDING METHOD AND APPARATUS

摘要

Methods and devices for seismic data processing deblend seismic data gathered using simultaneous source acquisition by applying two different deblending techniques. The second deblending technique is applied to residual data obtained after applying the first deblending technique. At least one of these first and second deblending techniques uses a signal-to-noise map.

主权项

1. A method for deblending seismic data obtained when surveying an underground formation, the method comprising:
receiving blended seismic data gathered using simultaneous source acquisition; applying a first deblending technique, FDT, to the blended seismic data to calculate a signal model and a noise model; calculating residual data by subtracting (i) data corresponding to the signal model and the noise model from (ii) the blended seismic data; applying a second deblending technique, SDT, to the residual data resulting after applying the FDT; and creating an image of the explored underground formation using deblended data obtained by applying the FDT and the SDT, wherein the FDT and the SDT are different techniques.