Unsteady state relative permeameter Instruments

The instrument accurately determines by virtue of the unsteady state method, absolute permeability and relative permeabilities for liquid/liquid and liquid/gas systems at reservoir-representative pressure and temperature conditions. A nitrogen flow line enables the end user to inject nitrogen at constant pressure through the sample in order to determine gas/liquid relative permeability. The computer controlled system is delivered with a unique software that allows both manual and automatic operation modes, whereby all key components including pumps, valves, video capturing and data acquisition systems can be remotely controlled and automated. A test sequencer also allows fully automated experiments to be carried out. An integrated automatic back-pressure regulator located at the outlet yields a constant pressure with an immediate response to pressure fluctuations and phase transitions. The confining pump generates and automatically maintains a net overburden pressure thus preventing temperature related pressure variations. A visual produced-fluid monitoring system delivers flawless fluid production (water, oil, gas) for the entirety of the study. The core holder, air operated valves, produced fluid separator and necessary plumbing are enclosed in an isothermal air bath whose design allows easy access to all components.

Maximum confining pressure :

• 700 bar (10,000 psi)

Maximum pore pressure :

• 700 bar (10,000 psi)

Maximum gas pressure :

• 165 bar (2,500 psi)

Maximum working temperature :

• 150°C

Core diameter :

• 1"1/2 other upon request

Core length :

• 1” to 3” other upon request

Material :

• Stainless steel

Power supply :

• 220 VAC, 50/60 Hz

Air Pressure requirements :

• 7 bar (100 psi)

• Injection and production of the fluids are measured at reservoir condition.
• No correction is required.
• Fluid production from the core sample is measured by a video system at reservoir conditions which is independent from the fluid composition.
• Compact system