O metodo de empilhamento CRS : refinamento dos parametros e aplicações

AUTOR(ES)

Farid Majana

DATA DE PUBLICAÇÃO

2003

RESUMO

The common Reftection Surface (CRS) method extends the well established Normal Move-Out (NMO) method, allowing the stacking process to be applied to data arranged in settings more general than the common midpoint (CMP) gathers. For that aim, the CRS method uses the general hyperbolic moveout, which depends on the classical NMO velocity and some other parameters. As in the single-parameter NMO method, the CRS parameters are estimated applying a suitable coher-ence analysis to the multicoverage data. The construction of simulated (stacked) zero offset (ZO) sections in the 2D situation requires three CRS parameters. This work focuses on the estimation of these three parameters. It explains how the coherence analysis is performed by most imple-mentations of the CRS method and compares three algorithms used to refine the CRS parameters among themselves and with the traditional NMO method. These comparisons were performed using synthetic and real data.

ASSUNTO(S)

metodo sismico de reflexão geofisica geophysics seismic waves seismic reftection method sistemas imageadores ondas sismicas imaging systems

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