Dip-moveout processing by Fourier transform in an anisotropic media
- Colorado School of Mines, Golden, CO (United States)
Conventional dip-moveout (DMO) processing is designed for isotropic media and cannot handle angle-dependent velocity. The authors show that Hale`s isotropic DMO algorithm remains valid for elliptical anisotropy but may lead to severe errors for non-elliptical transversely isotropic models, even if velocity anisotropy is moderate. Here, the authors present an extension of Hale`s constant-velocity DMO method to anisotropic media. The DMO operator, to be applied to NMO-corrected data, is based on the analytic expression for normal moveout velocity for dipping reflectors given by Tsvankin (1994). Estimation of the parameters required for anisotropic DMO is discussed in Alkhalifah and Tsvankin (1994). Once the inversion step has been completed, the NMO-DMO sequence in transversely isotropic media does not take any more time than in isotropic media.
- DOE Contract Number:
- FG02-89ER14079
- OSTI ID:
- 89732
- Report Number(s):
- CONF-941015--
- Country of Publication:
- United States
- Language:
- English
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