Print Email Facebook Twitter Time-shift extended imaging for estimating depth errors Title Time-shift extended imaging for estimating depth errors Author Mulder, W.A. (TU Delft Applied Geophysics and Petrophysics; Shell Global Solutions International B.V.) Date 2023 Abstract The stationary-phase method applied to migration with a time-shift extension in a 2-D constant-velocity model with a dipped reflector produces two solutions in the domain of the extended image: one a straight line and the other a curve. If the velocity differs from the true one, the depth error follows from the depth and apparent dip of the reflector as well as the depth of the amplitude peak at a non-zero time shift, where the two solutions meet and the extended image focuses. The results are compared to finite-frequency results from a finite-difference code. A 2-D synthetic example with a salt diapir illustrates how depth errors can be estimated in an inhomogeneous model after inverting the seismic data for the velocity model. To reference this document use: http://resolver.tudelft.nl/uuid:119f1856-8bf6-4fb6-8c6f-d29f0f3bf30a DOI https://doi.org/10.3997/2214-4609.202310690 Event 84th EAGE ANNUAL Conference and Exhibition 2023, 2023-06-05 → 2023-06-08, Vienna, Austria Part of collection Institutional Repository Document type conference paper Rights © 2023 W.A. Mulder Files PDF 690.pdf 798.68 KB Close viewer /islandora/object/uuid:119f1856-8bf6-4fb6-8c6f-d29f0f3bf30a/datastream/OBJ/view