Generalized migration in frequency-wavenumber domain (MGF-K) in anisotropic media

• Autorzy: Kostecki A. , Półchłopek A.
• Języki publikacji: EN

Abstrakty

EN

In this paper, the background of MGF-K migration in dual domain (wavenumber-frequency K-F and space-time) in anisotropic media is presented. Algorithms for poststack (zero-offset) and prestack migration are based on downward extrapolation of acoustic wavefield by shift-phase with correction filter for lateral variability of medium’s parameters. In anisotropic media, the vertical wavenumber was determined from full elastic wavefield equations for two dimensional (2D) tilted transverse isotropy (TTI) model. The method was tested on a synthetic wavefield for TTI anticlinal model (zero-offset section) and on strongly inhomogeneous vertical transverse isotropy (VTI) Marmousi model. In both cases, the proper imaging of assumed media was obtained.

Słowa kluczowe

EN

anisotropic migration; tilted transverse isotropy (TTI); vertical transverse isotropy (VTI); transverse isotropy (TI); full elastic equation

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2013
• Tom: Vol. 61, no. 3
• Strony: 624--637
• Opis fizyczny: Bibliogr. 19 poz.

Twórcy

autor

Kostecki A.

• Oil and Gas Institute, Kraków, Poland

autor

Półchłopek A.

• Oil and Gas Institute, Kraków, Poland

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