GCTS Rock Testing Systems can be upgraded with a variety of equipment to perform various permeability tests, including conventional permeability, pulse-decay permeability, and relative permeability.

All GCTS Rock Triaxial Systems that are equipped with pore pressure control can also perform conventional permeability testing. An additional setup can be provided with a differential pressure transducer to perform conventional permeability tests with elevated back pressure.

The GCTS HPPD-20 Pulse-Decay Permeability Test Apparatus measures the permeability in micro-porous material in order to determine the capacity and flow characteristics of the rock matrix.

The GCTS HPVC-RP-Separator Relative Permeability Separator can be used with two pressure-volume intensifiers to determine the relative permeability of two independent fluids through a specimen. 

The GCTS Fast Pulse-Decay Permeability Apparatus (HPPD-20) is designed for measurement of permeability in micro-porous material such as gas shale and other reservoir rocks, in order to determine the capacity and flow characteristics of the rock matrix. HPPD-20 is capable of measuring rock permeability less than 1 μD (microdarcy).

The HPPD-20 includes two stainless steel large reservoirs with 2,000 cc volume capacity each and two smaller stainless steel reservoirs each with 500 cc volume capacity. Also included are nine zero-volume-change ball valves and one needle valve for precise flow control.

The system components are secured in an insulated metal cabined with front panel mounted valves and controls. The system also features precise temperature control inside the cabinet for elimination of any errors from temperature induced volume expansion and contraction of the fluid and gas inside the reservoirs. The HPPD-20 includes all necessary valves and fluid lines to perform the Fast Pulse-Decay permeability test when used with any of GCTS triaxial systems.

The GCTS HPVC-RP-Separator Relative Permeability Separator allows a single, mixed pore fluid to exit a rock specimen and be separated into its two component fluids. The separator includes three clear sight tubes to manually determine the relative permeability of the two fluids once they have exited the specimen. 

Please contact GCTS for full specifications.

HPPD-20 

• Apparatus for measurement of rock permeability using the Fast Pulse-Decay method.

• Two (2) 2,000 cc volume stainless steel reservoirs.

• Two (2) 500 cc volume stainless steel reservoirs.

• Nine (9) zero-volume-change ball valves.

• Two (2) pressure transducers.

• 20 MPa pressure capacity.

• Very easy to set up and use.

• Software to automatically calculates permeability.