The PIK-Slimtube installation is designed to study fluids dynamic mixing processes (determine minimum miscibility pressure) at reservoir conditions on a sand packed tube.
A long (24 m) thin (3.2 mm diameter) tube filled with prepared quartz sand is used as a reservoir model. During the experiment, recombined oil is displaced from the reservoir model by gas (hydrocarbon, nitrogen, carbon dioxide, etc.) or liquid solvent to evaluate the displacement efficiency depending on the discharge pressure. Viewing window with a video recording system provides visual control of outgoing fluid nature. The outgoing fluid volume is measured with a burette, and the gas – with a gas meter.
The installation can be equipped with a chromatograph and high pressure densitometer for continuous monitoring of outgoing fluid composition and properties during the experiment.
Maximum working fluid supply pressure, MPa | 70 |
System volume, cm3 | not less than 100 |
Fluid pump type | two-plunger, automatic |
Pump operating mode | • maintaining constant pressure • maintaining constant flow rate |
Pump cylinder volume, ml | 100 |
Maximum gas supply pressure, MPa | 70 |
Pressure measurement accuracy,% VPI | 0,15 |
Working substance | water, oil, hydrocarbon gases, carbon dioxide, solvent |
Temperature maintenance system
Type | heating chamber |
Maximum temperature, °C | 200 |
Heated elements | reservoir model, supply tubes, piston containers |
Temperature measurement accuracy, °С | ±1 |
Visual control system of outgoing mixture
Maximum pressure, MPa | 70 |
Fluid-contact parts material | stainless steel, sapphire |
Fixation | digital videocamera |
Back pressure regulator
Maximum pressure, MPa | 70 | |
Control | manual / automatic | |
Fluid-contact parts material | stainless steel | |
Gasometer
Type | drum continuous operation |
Range, l | up to 10 000 |
Porous medium model
Tube length, m | 24 |
Tube inner diameter, mm | 3,2 |
Filler | quartz sand 230-310mkm |
Estimated porosity,% | 36 |
PC-based monitoring and control system
Control | pump flow, temperature, pressure |
Data collection | digital pressure sensors, flow rate pumps, thermocouples |