L-25 Reliable parameter fields for Non-Hyperbolic Normal Move Out D. LE MEUR 1 R. SILIQI 1 F. ADLER 2 Abstract The focusing quality of far-offset volumes is strongly dependent on the density of the Non-Hyperbolic Normal Move Out (NHNMO) parameter estimation. The automatic picking of the residual time-shift due to the non-hyperbolic behavior of the reflection curve attempts to achieve this goal. The anellipticity η field containing many errors related to mis-picks and artifacts is replaced by anelliptic velocity ν which is related to the asymptote of the reflection curve. This new NHNMO parameter field thanks to the short spread


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