Equipment for research of core,
reservoir fluids and fracturing materials
E-mail:
contacts@geologika.ru
Telephone:
+7 (383) 332-17-47
The individual capillarymeter “PIK-IGС-PL” is designed to determine capillary and electrical properties, as well as residual water saturation of core samples using a semi-permeable membrane at reservoir conditions. The method is based on displacement of a liquid (formation water or its model, petroleum, oil, condensate, etc.) saturating the sample pore space under the overpressure of an immiscible fluid (gas or liquid) and continuous estimation of the current sample saturation by the displaced fluid volume. Results of the research are capillary pressure curves, values of residual (irreducible) saturation and electrical properties (resistivity, porosity and saturation parameters, a, m, n indicators) of each sample, measured at reservoir conditions.
The measurements are carried out at crimping pressure up to 70 MPa, temperatures up to + 150 ° С, pore pressure up to 3 MPa, in the entire range of sample permeability and water saturation of samples pore space from 100% to residual values.
The installation is a multi-channel laboratory stand with 14 (in the basic version) individual core holders, combined into groups of 7 core holders. Each core holder group is installed in a separate heating cabinet and is equipped with its own units for automatically maintaining crimp pressure, pore pressure control with a differential pressure sensor, a fluid supply container and a measuring electrical resistance system. Hydrophilic or petrophilic semipermeable membranes are used depending on the saturating fluid composition.
Hydraulic system
| Crimp pressure, MPa | 70 |
| Crimp pressure pump type | pressure booster |
| Crimp pressure pump operating mode | maintaining constant pressure |
| Inlet pore pressure, MPa | up to 2 |
| Output pore pressure, MPa | 0,5 |
| Pressure differential range, Mpa | 0,01 – 1,5 |
| Differential pressure accuracy,% of setting | 0,1 |
| Working substance | gas, mineralized water, oil |
Core holder
| Core diameter, mm | 30 or 38 |
| Column length of core samples, mm | 90 |
| Maximum working crimp pressure, MPa | 70 |
| Maximum working pore pressure, MPa | 3 |
| Maximum working temperature, °С | 150 |
| Resistivimetric saturation control | according to 2 or 4-electrode scheme |
Temperature maintenance system
| Type | heating cabinet per group (7 core holders) |
| Temperature, °С | up to +150 |
| Temperature measurement accuracy, °С | no more than ±1 |
Differential pressure measurement system
| Sensor 1. Upper measurements limit, MPa | 0,02 – 2,0 |
| Measurement accuracy, % | no more than 0,1 |
Electrical resistance measurement module
| Type | digital resistivity tester |
| Frequency, kHz | 1 |
| Accuracy, % | 0,05 |
Characteristics of a PC-based monitoring and control system
| Control | Switching resistance meter between core holders |
| Data collection | pressure/differential pressure digital sensors, thermocouples, sample resistivity |
Characteristics of core holder groups
| Number of groups per rack, pcs | 2 |
| Number of core holder in the group, pcs. | 7 |
Displaced fluid volume measurement system
| Saturation change accuracy, ml | 0,1 |
| Maximum volume of measuring flask, ml | 20 |