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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.

Electrical-Properties-Instrument2

 

 

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.

 

 

Specification

EPS-BR

EPS-PR

EPS-PS

Resistivity Measurement Method

2 Electrodes

4 Electrodes

4 Electrodes

Resistivity Accuracy

0.5% F.S.

0.1% F.S.

0.05% F.S.

Rock Electrical Properties Measurement Frequency

1 KHz

50 Hz

1000 Hz

10 KHz

Various Range of Frequencies

Working Temperature

Ambient

Ambient

Up to 90˚C

Working Pressure

Atmospheric

6 bar

6 bar

Core Length

1” and 1.5”

1” and 1.5”

1.5”

Core Diameter: up to 4″

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Input Power Supply: 220 VAC, 50Hz

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Computer System

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User Friendly Automated Data Acquisition and Monitoring System

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Overburden Pressure: up to 6000 psi

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Core Holder Designed for Overburden Pressure

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Fast Measurement System

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Download Brochure

 

Read more

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