DIFFICULTIES IN THE USE OF DFA TO CHARACTERIZE PETROLEUM RESERVOIRS

R. A. Ribeiro, Maria V. M. Mata, K. C. O. Costa, F. W. F. Silva, L. S. Lucena (), U. L. Fulco and G. Corso
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R. A. Ribeiro: Faculdade de Ciências, Cultura e Extensão do RN — FACEX, Rua Orlando Silva, 2897, Capim Macio, CEP 59080 020, Natal, RN, Brazil
Maria V. M. Mata: Programa de Pós-Graduação em Ciências Climáticas, Universidade Federal do Rio Grande do Norte, UFRN — Campus Universitário, Lagoa Nova, CEP 59078 972, Natal, RN, Brazil
K. C. O. Costa: Programa de Pós-Graduação em Ciência e Engenharia de Petróleo — PPGCEP, Universidade Federal do Rio Grande do Norte, UFRN — Campus Universitário, Lagoa Nova, CEP 59078 972, Natal, RN, Brazil
F. W. F. Silva: Programa de Pós-Graduação em Ciência e Engenharia de Petróleo — PPGCEP, Universidade Federal do Rio Grande do Norte, UFRN — Campus Universitário, Lagoa Nova, CEP 59078 972, Natal, RN, Brazil
L. S. Lucena: Departamento de Física Teórica e Experimental, International Center for Complex Systems and Instituto Nacional de Ciência e Tecnologia sobre Sitemas Complexos, Universidade Federal do Rio Grande do Norte, UFRN — Campus Universitário, Lagoa Nova, CEP 59078 970, Natal, RN, Brazil
U. L. Fulco: Departamento de Biofísica e Farmacologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, UFRN — Campus Universitário, Lagoa Nova, CEP 59078 972, Natal, RN, Brazil
G. Corso: Departamento de Biofísica e Farmacologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, UFRN — Campus Universitário, Lagoa Nova, CEP 59078 972, Natal, RN, Brazil

International Journal of Modern Physics C (IJMPC), 2011, vol. 22, issue 02, 123-131

Abstract: In this work we have used the Detrended Fluctuation Analysis (DFA) technique to investigate an oil reservoir. The system we address here is situated at Bacia de Namorados, RJ, Brazil. The data corresponds to well logs of five geophysical variables: sonic, porosity, electrical resistivity, gamma ray and density measured in 56 wells. The objective of this work is to analyze the correlation or similarity among theDFAindex of several geophysical quantities. We perform a linear correlation test to compare pairs ofDFAindices of the geophysical quantities for the well logs. We have not found a major similarity among the five variables which indicates an absence of correlation for these variables. Therefore, we argue that theDFAindex should be used with caution in the characterization of oil reservoirs. In this way we suggest to integrate the information ofDFAof several physical quantities to adequately model this kind of system.

Keywords: Detrended Fluctuation Analysis; Hurst exponent; well logging; oil reservoirs (search for similar items in EconPapers)
Date: 2011
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DOI: 10.1142/S0129183111016117

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