Resistivity, porosity, permeability, and saturation data were obtained on core samples from the Big Injun, Clinton, Gordon, Bradford Second and Third, and Venango Second oil sands and formation factor-porosity relationships were derived using the general form of Archie's equation F = a@-m, where F is the formation factor, @ is the porosity, and a and m are constants that depend on characteristics of the rock. It was found that a and m varied significantly between sands, as did the exponent in the Archie relation I = S,", where I the resistivity index and S, is the water saturation. The average exponent, n, determined from all data was 50 percent greater at residual oil saturation than at residual water saturation. Samples from each sand exhibited differences in directional resistivity and/or permeability. The Bradford Third sand data showed correlation between resistivity and permeability aniso-
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March 01 2001
Electrical And Hydraulic Flow Properties Of Appalachian Petroleum Reservoir Rocks
Petrophysics 42 (02).
Paper Number: SPWLA-2001-v42n2a1
March 01 2001
Lowe, R.B., Pierce, C.I., and W.K. Sawyer. "Electrical And Hydraulic Flow Properties Of Appalachian Petroleum Reservoir Rocks." Petrophysics 42 (2001): No Pagination Specified.
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