Scope: Determination of absolute permeability of a core by flowing air Steady State Method

 

Permeability is the ability of a rock or porous medium to allow fluids to pass through it. It is totally dependent to the geometry of the rock and pore network. Darcy's law, as the main equation will be used in permeability measurements. It is the relationship of the velocity (i.e. flux) of a fluid with a known viscosity to the pressure gradient by a proportionality factor called absolute permeability, expressed in Darcies.

 

 

 Gas-Permeability-PR-Model  Gas-Permeability-PS-Model

 

 

Experiment Description

 

 

In this experiment nitrogen flows through the Sample from a cylinder. Pressure drop during the test is measured. Permeability of the sample will be estimated using Darcy’s equation for compressible fluids.

 

 

 

Specification

SGP-BR

SGP-PR

SGP-PS

Permeability Range

1-500 md

0.01-10,000 md

0.001-10,000 md

Core Diameter

1.5”

1.5”

1.5” & 2⅝” & 4”

Core Length

Up to 4”

Up to 4”

Up to 4” & Up to 10”

Gas Flow

0-200 Scc/min

0-10 & 0-2000 Scc/min

0-0.5 & 0-5 & 0-100 & 0-2000 Scc/min

Flow Accuracy

1% F.S.

0.2% F.S.

0.1% F.S.

Pressure Reading Accuracy

0.5% F.S.

0.1% F.S.

0.05% F.S.

Working Flow Pressure: Up to 145 psi

Working Temperature: Ambient

Input Power Supply: 220 VAC, 50 or 60 Hz

Mass Flow Controller

Computer System

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User Friendly Automated Data Acquisition, Calculating and Reporting Software

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Electronic or Pneumatic Control Valves

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Fast Measurement System

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Finger protection safety system

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Helium Porosimeter