POROPERM-Porosity and steady state gas permeability meter


Porosity and permeability are essential in determining the capacity of a geological reservoir to store CO₂, the efficiency with which CO₂ can be injected, and the long-term behavior of CO₂ within the reservoir. The POROPERM device is engineered to measure both porosity and gas permeability in plug-sized core samples. Specifically, the device determines porosity using an isothermal nitrogen expansion, combined with Boyle's and Charles' laws. Gas permeability is measured using the steady-state method, from which the equivalent liquid permeability and slip can be derived through linear interpolation. The typical setup includes a control console, a quick-release Hassler core holder, a matrix cup, and a data acquisition system that supports both manual and automatic functions. For studies requiring overburden pressure, a high-quality stainless steel core holder can be provided.


Permeability Range: 0.01md to 10 darcies
Flow Pressure: 0 - 150 psi
Confining Pressure: 0 - 400 psi  (option 10,000 psi)
Gas flow: 0-50 and 0-600 cc/min
Temperature: Ambient
Pressure transducer accuracy: 0.1% F.S.
Flow accuracy: 1 % F.S.
Core diameter: 1” and 1.5”
Core length: Up to 3”
Power: 110-220 VAC, 50 or 60 Hz


* Measures both porosity and gas permeability in core samples
* User-friendly due to its thoughtfully designed operator interface
* Can be adapted for overburden pressure studies using a 10 kpsi core holder