TTI VELOCITY MODEL BUILDING, TO IMPROVE SYN-RIFT IMAGING, OFFSHORE WESTERN MEDITERRANEAN, MATRUH CANYON, EGYPT | ||||
| Journal of Egyptian Geophysical Society | ||||
| Volume 20, Issue 1, 2022, Page 67-74 PDF (1.32 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jegs.2022.385853 | ||||
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| Authors | ||||
| T. Elsabawy1; A. El-Werr2; A. EL-Rawy2 | ||||
| 1(1) PGS Company, Cairo, Egypt. | ||||
| 2(2) Geophysics Department, Faculty of Science, Ain Shams University, Cairo, Egypt. | ||||
| Abstract | ||||
| Seismic time migration is not the optimum technique in Matruh canyon area, as it shows structurally distorted image, due to the geologic complexity and the strong lateral velocity variations across the canyon base. On the other hand, 3D Pre-Stack Depth Migration (PSDM) has been tested in which a 3D velocity model building approach, including the Beam-wavelet shift tomography. Good background velocity model was built as initial velocity model, followed by the application of series of Tilted Transversal Isotropy (TTI) wavelet shift reflection tomography update, in Matruh canyon, Offshore Western Mediterranean, Egypt. The results showed detailed imaging of the complex structural elements regime across the canyon base. This is mainly due to the high resolved velocity model, that can correct the Syn-rift structure distortions, by reconstructing the Syn-rift complex velocities | ||||
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