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- W2052152126 abstract "We have implemented and tested a diffraction tomography algorithm capable of imaging areas whose velocity structure can be approximated aa a set of parallel layers. Twodimensional structures, such as faults, dipping beds, ad pinchouts, are considered to be perturbations about the onedimensional background. Within the limitations of the Born approximation, the layered diffraction tomography algorithm applies corrections to the background to show these structures. Since the subsurface in many areas has an approximately layered structure, this algorithm has the potential for being widely applicable to reservoir imaging problems. Initially, studies of synthetic data from simple models explicitly constructed as perturbations about a known layr Wu and ToksGz, 1987), which is designed to image weak scatterers embedded in a constantbackground medium. Our results for these models demonstrate that the layered diffraction tomography algorithm can image targets for which filtered backpropagation fails. The importance of the new algorithm lies in its ability to image models of realistic geological complexity. We have utilized the algorithm to image synthetic crosshole data generated for a realistic model constructed using well logs and outcrop studies from several field sites. We demonstrate the ability of the algorithm to image faults, dipping beds, and lateral velocity changes, and find that beds as thin as onequarter wavelength can be mapped using diffraction tomography." @default.
- W2052152126 created "2016-06-24" @default.
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- W2052152126 date "1992-01-01" @default.
- W2052152126 modified "2023-09-24" @default.
- W2052152126 title "Study of diffraction tomography for layered backgrounds" @default.
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- W2052152126 doi "https://doi.org/10.1190/1.1822213" @default.
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