Morbimortalidade perinatal associada à infecção clamidiana: uma revisão sistemática

Universidade Federal do Rio Grande do Norte

Avaliação dos efeitos da atividade física na prevenção do estresse oxidativo e do câncer de mama

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Impacto da atividade física na qualidade de vida em mulheres de meia idade: estudo de base populacional

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Análise espacial de reservatórios usando DFA de dados geofísicos

This research aims to set whether is possible to build spatial patterns over oil fields using DFA (Detrended Fluctuation Analysis) of the following well logs: sonic, density, porosity, resistivity and gamma ray. It was employed in the analysis a set of 54 well logs from the oil field of Campos dos Namorados, RJ, Brazil. To check for spatial correlation, it was employed the Mantel test between the matrix of geographic distance and the matrix of the difference of DFA exponents of the well logs. The null hypothesis assumes the absence of spatial structures that means no correlation between the matrix of Euclidean distance and the matrix of DFA differences. Our analysis indicate that the sonic (p=0.18) and the density (p=0.26) were the profiles that show tendency to correlation, or weak correlation. A complementary analysis using contour plot also has suggested that the sonic and the density are the most suitable with geophysical quantities for the construction of spatial structures corroborating the results of Mantel test