The device is designed to determine gas permeability of rocks with ultra low permeability (clay and carbonate shales, dense sandstones, etc.) on cylindrical samples by stationary filtration under pressure conditions.
The device is equipped with two core holders for samples with a diameter of 30 and 38.1 mm, as well as thermal stabilization system. Measurements are made under crimping pressure conditions, allowing modeling the reservoir effective pressure.
Device preparation procedures include calibration and checking for gas leaks.
Core holders number | 2 |
Core diameter, mm | 30/38 |
Core length, mm | 20-100 |
Permeability measurement range | 1 aD (10-18 D) to 1 μD (10-6 D) |
Pore pressure, MPa | 0.1-1.7 |
Crimp pressure range, MPa | 1-70 |
Crimp pressure range, MPa:
|
± 0,1 30-40 |
Fluid-contact material | stainless steel |
Core holders sample loading type | dry, without oil drain |
Applicable gases | helium, nitrogen |