Scope: Archie's Coefficient Determination
Resistivity Index is an electrical Property of rock that is the ratio of rock resistivity when it is partially saturated with water to that when is fully saturated with water. utilizing Archie's Famous saturation of rock, through saturation exponent, in situ waterc saturation can be calculated. There fore, based on the material balance equation (i.e. So+Sg+Sw=1), hydrocarbon in place can also be determined.
Experiment Description
Two conductive pads are used for measuring the resistivity of both sides of the sample at fully and partially water saturated conditions. Based on the amount of saturation and resistivity index, Archie's coefficients can be calculated. Measuring is performed at ambient pressure and temperature condoitions.
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Capillary pressure and resistivity system