STL-1 type core gas permeability tester

1、 Instrument functions

Used to measure the conventional gas permeability of formation cores.

2、 Main technical indicators

Measurement range: 0.01~8000 × 10^-3μm²

Measurement pressure: less than 10MPa

Sealing pressure: 10MPa

Analysis of core size: Φ 25 × 25-80mm

Flow meter range: 6-60mL/min

25～250mL/min

160～1600mL/min

Measurement error: Low permeability ≤ 10%

Medium to high ≤ 10%

3、 The structural composition and technical parameters of each component of the instrument

The instrument consists of a high-pressure regulating system, a low-pressure regulating system, a core gripper, a flow meter, a pressure measurement system, valves and pipelines, etc.

1. High pressure regulating system

Composed of a high-pressure regulating valve, the inlet pressure of the regulating valve is 20MPa, and the outlet pressure can be adjusted from 0 to 10MPa.

The adjusted pressure value can be displayed on the precision pressure gauge behind the valve.

2. Low pressure regulating system

It consists of a low-pressure regulating valve and a low-pressure gauge. The inlet pressure of the low-pressure regulating valve is less than 1.2 MPa, and the outlet pressure can be adjusted from 0 to 0.8 MPa.

The adjusted pressure value can be displayed by a low-pressure precision pressure gauge.

3. Core clamp

Ring pressure: 20MPa

Applicable core specifications: Φ 25 × 25-80mm

4. Gas flowmeter

Install three sets of gas flow meters with different ranges at the core outlet, and select them according to the flow rate during the experiment.

Range: 6-60mL/min

25～250mL/min

160～1600mL/min

5. Pressure measurement

The test pressure is measured using precision pressure gauges with ranges of 1MPa and 10MPa, while the ring pressure is measured using a pressure gauge with a range of 10MPa.

6. Valve and pipeline processes

Using a Φ 3 × 0.5mm stainless steel pipeline and DW3 high-pressure needle valve to connect the pipeline process, with a pressure resistance of 20MPa