Crosscorrelogram Migration of Free-Surface Multiples in CDP Data
نویسنده
چکیده
Free-surface multiples can be considered to be signal and migrated by the crosscorrelogram migration method (Schuster and Rickett, 2000; Sheng, 2000). By merging the Kirchhoff and crosscorrelogram migration images, the true reflectors can be reinforced and the artifacts can be attenuated. For simple flat layered models direct multiplication of the Kirchhoff and crosscorrelogram migration images gives a good migration image of the reflectivity; however, for some complex models such the SEG/EAGE salt model the product image needs to be improved. A new merging scheme suggested by Yi Luo is used and an improved result is obtained. A Mobil’s marine data set was migrated using crosscorrelogram migration and the result shows that the artifacts due to the water-bottom multiples are attenuated but the improvement is not obvious. INTRODUCTION
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