Prestack migration deconvolution

Poststack MD has been shown to be an effective method for attenuating migration noise, improving lateral resolution, and correcting for some migration amplitude distortion in 2-D and 3-D data (Hu and Schuster, 1998; and Hu and Valasek, 1999). In field data tests, poststack MD has successfully improved the 3-D poststack migration images (Hu and Valsek, 1999) obtained from both synthetic and field data. Although the resolution was improved, the artifacts in the 3-D prestack-migration image were not completely attenuated by poststack MD. To partly remedy this problem, it is necessary to develop a prestack MD algorithm. In this paper, we develop a prestack MD algorithm and apply it to 3-D synthetic and 2-D field data.