The most important scale-up parameters of aerated bioreactors are investigated in 42 and 340 L vessels, with water and various xanthan gum and carboxymethyl cellulose solutions. The study focuses mainly on mass transfer (k L a) measurements under various operating conditions. The relevance of existing correlations is discussed. The traditional viscosity-contribution approach appears unable to predict the changes in k L a during scale-up and an alternative formulation is proposed. The effect of rheology on power consumption and mixing time is in fair agreement with works published on this topic.
RESUMOEste trabalho consiste na definição do embasamento da Bacia de Taubaté por meio de métodos geoestatísticos, a partir de dados sísmicos, gravimétricos e informações de poços tubulares profundos. As atividades compreenderam a interpretação de onze seções sísmicas dispostas na porção central e nordeste da bacia, com as quais se obtiveram dados sobre as cotas do embasamento e distribuição das principais falhas. O acréscimo de informação foi de 79 poços, que contribuíram como dados novos principalmente na região das cidades de São José dos Campos e Jacareí. A técnica de krigagem com deriva externa foi aplicada utilizando as informações de sísmica e poços como variáveis principais e o mapa gerado pelo levantamento gravimétrico como variável secundária. O contorno do embasamento obtido apresenta alta correlação com as principais falhas e uma melhor definição foi possível na região de São José dos Campos e no extremo norte da bacia, áreas nas quais está presente o maior número de poços.Palavras-chave: Bacia de Taubaté; Sísmica; Geoestatística.
ABSTRACTThe aim of this study is to define the basement map of the Taubaté Basin applying geostatistics to seismic, gravimetric and deep wells data. The study consisted of the interpretation of eleven seismic sections obtained in the central and northeastern portions of the basin. The altitude of the basement and the distribution of faults was determined based on these sections. New information was obtained from 79 wells located mainly in the regions of São José dos Campos and Jacareí. The method of kriging with an external drift was applied, using seismic and well data as the main variables and the gravimetric map as the secondary variable. The basement contour map obtained has a strong correlation with the main faults. It was possible to obtain a better resolution in the region of São José dos Campos and in the northeast area, where the vast majority of wells are located.
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