Inversão sismoestratigrafica 2D aplicada a Caracterização de um reservatorio delgado

AUTOR(ES)
DATA DE PUBLICAÇÃO

1998

RESUMO

The purpose of this work is to estimate thin reservoir properties even without counting on a good quality and a homogeneous database. Following a regional geological setting, well data such as logs, reports, cores, has led to an interpretation of the depositional model in which the sandstone interval is inserted as an estuary filling an incised valley system. This knowledge is essential to provide elements for a final work judgement. The main geological properties were then extracted ftom logs. The geophysical approach has counted on a lD modeling of the main well acoustic parameters and a 2D Seismostratigraphic lnversion with a priori acoustic impedance, which was able to enhance the ftequency content of the original data. After the interpretation of the inverted data, seismic attributes were then extracted. A multivariate statistics was performed in order to establish which correlations between geological and seismic attributes would be carried forward. An Ordinary Kriging was applied to the 2D seismic attributes. The External Drift Kriging was used to derive maps of the geological properties with the constraint of seismic variables. The final geological properties maps are similar in shape and coherent with the depositional model proposed

ASSUNTO(S)

metodo sismico de reflexão reservatorios

ACESSO AO ARTIGO

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