The “PIK-RKT-225-HPHT” X-ray computer tomograph is designed for core samples tomography at reservoir conditions and is used for the current assessment of reservoir model saturation and displacement front dynamics during filtration experiments (oil displacement by various agents, relative phase permeabilities in “liquid-liquid” and “liquid-gas” systems, etc.).
The X-ray source and detector rotate around and move along a stationary subject, providing continuous control of the experimental parameters. The use of a solid-state detector and an x-ray tube with a small focal spot allows achieving maximum shooting resolution.
X-ray transparent core holder made of composite materials ensures compliance with reservoir conditions for filtering experiments. Without a core holder, the tomograph can be used for tomography of a full-size core or its samples at atmospheric conditions.
specific surface of cracks
Layout | subject horizontal position |
Scanning mechanism | rotating pair source-detector moving along the subject axis |
Spatial resolution, microns | 150 (for core with a diameter of 30 mm) |
Contrast resolution, % | 0,5 |
Maximum length of the subject, mm | 1000 |
Maximum diameter of the subject, mm | 150 |
Detector | |
Type | CMOS x-ray sensor technology |
Active area, cm | 12.8 x 12.8 |
Capacity, bit | 14 |
Pixel size, microns | 150 |
X-ray machine | |
Maximum voltage, kV | 225 |
Maximum current, mA | 30 |
Maximum power, W | 1600 |
Focal spot size IEC 336, mm: at 900 Wat 1600 W |
0.4×0.4 1.5×1.5 |
Cooling system | water/antifreeze with flow and temperature control |
Protective cabinet | |
Material | steel lead |
Dose rate | less than 1.0 μSv / h at any point of 10 cm distance from the cabinet surface |
Test samples (phantoms) set for tomography quality control | |
Resolution control | test sample with characteristic element sizes: 150 microns |
Contrast control | test sample for checking contrast resolution: solid object with density variation insert of 0.5%. |
Hydraulic system
Maximum crimp pressure, MPa | 70 |
Maximum pore pressure, MPa | 40 |
Working substance |
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Fluid-contact parts material | stainless steel, titanium |
Core holder
Core diameter, mm | 30 |
Maximum column length of core samples, mm | 300 |
Maximum working crimp pressure, MPa | 70 |
Maximum working pore pressure, MPa | 40 |
Maximum working temperature, °С | +150 |
Fluid-contact parts material | stainless steel, titanium |