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The present work intends to present information about the thermal evolution of organic matter present in the geologic formations belonging to the Lusitanian Basin. For this evaluation the PetroMod software from IES Schlumberger (1D and 2D) has been applied. Three wells (one in the North and two in the Central sector) and three interpreted seismic l...
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Citations
... A modelação baseou-se em dados de espessuras e idades para cada unidade sismo-estratigráfica, definindo assim o empilhamento e soterramento das unidades sedimentares em geral e das unidades com potencial gerador em particular. A partir destas colunas foi efectuado o backstripping, atendendo a factores como a paleobatimetria, compactação, densidades, etc., permitindo calcular a subsidência tectónica e os factores de estiramento (Beta) associados a cada fase (Teixeira et al., 2011Teixeira et al., , 2012b). Com base nas fases de rifting e valores de Beta identificados, abordou-se a modelação da maturação térmica dos dois potenciais geradores Jurássicos. ...
This paper addresses the modeling of thermal maturation of two potential source-rock units of the Lusitanian Basin, Lower Jurassic and Upper Jurassic, also interpreted in the Peniche Basin. Ten wells in Lusitanian basin and 15 pseudo- wells in the Peniche basin have been analyzed and modeled with PetroMod software. Pseudo - wells were built based on the interpretation of seismostratigraphic units, identified in 28 regional seismic lines, by correlation with the onshore units. The modeling indicates maturation conditions of both source-rocks for oil in both basins, with the possibility of gas generation in the most subsiding sectors. Maturation in the Peniche Basin appears to be more extensive and also more recent, as a result of its outermost position in the geodynamic context of the opening of the North Atlantic Ocean. © 2014 LNEG – Laboratório Nacional de Geologia e Energia IP.
