The PIK-OFP installation is designed to determine filtration, capacitive and electrical core sample properties during single and two-phase stationary and non-stationary filtration at reservoir conditions. The equipment is used to determine oil displacement coefficients by water/gas for evaluating effectiveness of increasing oil recovery physicochemical methods, determining relative phase permeabilities in “liquid-liquid” and “liquid-gas” systems.
• Relative phase permeabilities during joint oil and water filtration in accordance with OST 39-235-89;
• Core sample current saturation
• Electrical resistivity
• Oen porosity coefficient at reservoir conditions
• Oil displacement rate
• Open porosity coefficient depending on changes at reservoir conditions
Hydraulic system
| Crimp pressure, MPa | up to 70 | 
| Crimping pressure pump type | manual | 
| Pore pressure, MPa | up to 40 | 
| Pore pressure pump type | automatic, single plunger | 
| Reservoir pumps operating mode | ·         maintaining  constant flow rate
 ·         • maintaining constant pressure  | 
| Working substance rate, ml / min | 0,001¸50 | 
| Pressure maintenance accuracy from VPI, % | 0,5 | 
| Flow rate maintenance accuracy, % from the current value | 0,5 | 
| Cylinder volume, ml | 200 | 
| Working substance | • water with a salinity of – up to 300 g / l • oil  | 
Temperature maintenance system
| Working temperature range, °C | from +25 to +150 | 
| Heated elements | core holder, supply pipes, pump hydraulic parts | 
Differential pressure measuring systems
| Upper measurements limit, MPa | 1,6 | 
| Measurement accuracy, % | not more than ± 0,075 | 
Fluid volume measurement systems
| Type | visual control | 
| Meter separator volume, ml | 200 | 
| Resolution, ml | 0,1 | 
| Fluid-contacting parts material | stainless steel, glass | 
| Working pressure
 
  | 
atmospheric | 
Back pressure regulator
| Pressure, MPa | 40 | 
| Control | automatic | 
| Fluid-contacting parts material | stainless steel, fluoroplastic, peek | 
Electrical resistance measurement module
| Type | Digital resistivity meter | 
| Frequency, kHz | 1 | 
| Accuracy, % | 0,05 | 
| Measurement circuit | 4 electrode | 
Core holder
| Core diameter, mm | 30 | 
| Maximum column length of core sample, mm | 150 | 
| Maximum working crimp pressure, MPa | 70 | 
| Maximum working pore pressure, MPa | 40 | 
| Maximum working temperature, °С | up to 150 | 
| Resistivometric saturation control | 4-electrode circuit | 
| Fluid-contacting parts material | stainless steel | 
PC-based monitoring and control system
| Control | pumps flow rate, temperature, back pressure regulator | 
| Data collection | pressure/differential pressure digital sensors, pumps flow rate, thermocouples, separator meter, sample electrical resistance |