A Review on Influence of Mineralogy and Diagenesis on Spectral Induced Polarization Measurements in Carbonate Rocks

Abstract

Due to the heterogeneity of the carbonate reservoirs, it becomes very difficult to determine the correct mineralogy or lithology of the formation. Before any petrophysical analysis, it seems imperative to determine the mineralogy. Different Lithologies and facies vary in different ways and require different methods for further interpretation. Spectral-induced polarization is one of the geophysical methods that is sensitive to the fluid-grain interface and hence very beneficial in delineation of geological material. Using this method, we measure complex conductivity. The basic principle is that a sinusoidal current is injected into the rock and the resulting voltage is calculated. The capacitive nature of the rocks introduces a phase difference between the injected current and the measured voltage waveform between the potential electrodes. In this paper, we will discuss previous published data on the impact of various rock types (Skarn ore, Skarn rock, Carbonate rocks) on the SIP response by obtaining the chargeability and relaxation time. SIP is a compelling approach to study and characterize sandstone, shale rocks, volcanic rocks, etc. Although, little work is done in exploration of carbonate rocks using SIP till now.