Modelagem geoestatistica de atributos geologicos em reservatorios turbiditicos / Geoestatistical modeling of the geological atributes in turbidites reservoirs

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

The reservoir characterization model is of fundamental importance for the planning of a strategy production petroleum field. The geological models allow the understanding of the reservoir s spacial and qualitative distribution of its principal heterogeneity. This analysis involves enormous amount of variables due to the complexity of the problem, which generates a great number of probable scenarios. For the geological model of the area the interpretation is based on the analysis of ten electrical and radioactive logs, with which it is possible to determine the intercalations layers and the definition of the porosity and permeability of the sandstones. The presence of thicker and continuous packages of sandstones in the NE-SW direction, with its high net to gross ratio, is probable due to the existence of a preferential direction of the sediment sources. The geostatistical analysis was carried out for the principle variables regarding the characterization of the reservoir. This analysis defined the direction SW-NE as the preferential direction of the sediments sources and in situ oil volume estimate. Due to the raised uncertainty in the estimate of this volume, a stochastical was carried out with the consideration of; top and base variables of the reservoir, distribution of sandstones and porosity. The results of the stocastical simulations show the variation of the volume in situ of oil

ASSUNTO(S)

reservoir characterization modelagem geologica facies (geologia) geological models simulação e modelagem metodos de simulação geoestatistica geoestatistical analysis reservatorios electrical and radioactives logs

ACESSO AO ARTIGO

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