True amplitude Kirchhoff time migration in the common angle domain / Migração Kirchhoff 2,5D em tempo no dominio de angulo comum e em amplitude verdadeira

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

The analysis of amplitude variation with offset or reflection angle is of great importance in the oil industry to predict hydrocarbon presence in the reservoir. This analysis is applied to both reservoir and exploration areas. The usual transformation method from offset to reflection angle, for common-offset migrated data, involves errors that may produce unreliable results. Thus, it becomes necessary to find altemative procedures to obtain appropriate data to provide more reliable curves of amplitude versus reflection angle (AVA). This work considers 2.5D true amplitude Kirchhoff-time migration in the common-angle domain, and its application to synthetic seismic data. It also examines the influence of seismic acquisition and migration parameters, aperture and migration dip-angle increment, on the migration results. Comparison between AVA curves obtained from common-angle and common-offset migrated data confirms that the former is a more reliable procedure

ASSUNTO(S)

true amplitude imaging sistemas imageadores common angle metodo sismico de reflexão migration seismic processing metodo sismico de reflexão - processamento de dados

ACESSO AO ARTIGO

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