FLECAS-HT is a unique flow-through system enabling the simultaneous measurement of permeability and electrical resistivity (co-axial 4-electrode arrangement) on rock cylinders with a diameter of 30 mm and a length of 75 mm at temperatures of up to 500 °C. Currently, FLECAS-HT can be operated at a maximum confining Ar-gas pressure of 40 MPa, and a pore fluid pressure of 25 MPa. Due to the corrosive nature of high enthalpy aqueous fluids, the sample must be encapsulated with a gold tube.

…

One of the most important reservoir parameters is permeability, which defines the ability of a liquid to flow through a porous medium. Various set-ups are available in our laboratories to determine the permeability under different pT conditions. The standard sample sizes (D/L) are 25 mm/50 mm and 30 mm/40 mm. The permeability is always measured in a stationary manner (Darcy or Darcy-Klinkenberg), but it is also possible to determine low permeabilities using the transient pressure pulse method. …