Laboratory-based GEMTIP analysis of spectral IP data for mineral discrimination

• DOI: 10.1190/segam2012-1268.1
• Publication Date: 2013-04-15T23:47:27Z
• Authors: Michael S. Zhdanov; Vladimir Burtman; Masashi Endo; Glenn A. Wilson
• Keywords: 01 natural sciences; 0105 earth and related environmental sciences

Summary The generalized effective medium theory for induced polarization (GEMTIP) enables one to model and invert the complex resistivity (CR) spectra for rock and fluid parameters such as matrix resistivity, grain size, grain resistivity, fraction volumes, porosity, fluid saturations, and polarizability. Moreover, GEMTIP can explain anisotropic resistivity in terms of grain orientation. In this work, the GEMTIP model is used to invert laboratory-based complex resistivity measurements for the aforementioned rock and fluid properties. We have applied the GEMTIP model to analyze the IP phenomena in both mineralized rocks, and hydrocarbon-bearing reservoir rocks. From laboratory measurements of mineralized rock samples, we show how the mineral properties recovered from GEMTIP analyses of CR spectra can be correlated with optical microscopy, QEMScan and x-ray tomographic mineralogical analyses.