Core Holders
High-pressure core holders designed for a wide range of testing applications, including Rock Mechanics, Core Flooding, Resistivity, and X-ray compatible testing. Engineered to ASME Section VIII standards and configurable for specific pressure, temperature, sample size, and fluid compatibility requirements.
Rock Mechanics Core Holders
In-Situ Stress & Temperature SimulationDesigned to simulate in-situ stress, temperature, and pore fluid pressure conditions. Available in Triaxial, Biaxial, and Mini Triaxial configurations with independent axial and radial stress control. Engineered to ASME Section VIII, Division 1 or 2 and customizable for specific pressure, temperature, sample size, and fluid compatibility requirements.
| Triaxial / Biaxial | |
| Confining pressure | Up to 30,000 psi |
| Sample heating | Up to 300°C |
| Axial load capacity | Up to 500,000 lbf |
| Sample size | Up to 4″ dia × 8″ |
| Electrical feedthroughs | 12 (Triaxial) |
| Pore pressure | Up to 20,000 psi |
| Mini Triaxial | |
| Pressure rating | Up to 10,000 psi |
| Sample heating | Up to 150°C |
| Axial load | Up to 50,000 lbf |
| Sample size | Up to 1.5″ dia × 3″ |
Triaxial Core Holder
- Applies independent axial and radial stresses to simulate in-situ triaxial stress conditions
- Confining pressure up to 30,000 psi; pore pressure up to 20,000 psi
- Sample heating up to 300°C
- 12 electrical feedthroughs for strain, acoustic, thermocouple, and load measurements
- 4 integrated pore lines for vertical and horizontal permeability and pore pressure control
- Samples up to 4″ diameter and 8″ length
Biaxial Core Holder
- Applies radial confining stress with independent axial loading at sample ends
- Electrical feedthroughs for axial/radial strain, acoustic, resistivity, and thermocouple measurements
- Integrated pore lines for saturation, permeability, and pore pressure control
Mini Triaxial
- Compact design — vessel opened by removing a single nut for quick sample loading
- Independent axial and radial stresses for in-situ triaxial simulation
- Reduced size allows easy integration inside ovens and load frames
- Electrical feedthroughs for strain, acoustic, and thermocouple measurements
Common to All
- Engineered to ASME Section VIII, Division 1 or 2
- Custom configuration for specific pressure, temperature, and sample requirements
- Selectable wetted materials for fluid compatibility
Applications
- Triaxial, biaxial, and isostatic stress path testing
- In-situ stress and temperature simulation for reservoir conditions
- Steady-state and transient permeability measurements (vertical and horizontal)
- Acoustic velocity and AE monitoring during deformation
- 4-wire resistivity measurement under stress
- Core flooding and sample saturation studies
Drilling Fluid & LCM Core Holders
Specialized Drilling Fluid Interaction TestingDesigned for LCM evaluation, SAAB testing, creep testing, and formation damage studies. Each holder evaluates drilling fluid interaction with core samples under controlled pressure and temperature. Available in LCM, SAAB, Creep, and Formation Damage / Return Perm configurations.
| LCM / SAAB / Creep | |
| Pressure rating | Up to 10,000 psi |
| Temperature rating | Up to 150°C |
| Sample size (LCM/SAAB) | Up to 4″ dia × 8″ |
| Formation Damage / Return Perm | |
| Sample sizes | 1″ and 1.5″ dia × 12″ |
| Pressure rating | Up to 10,000 psi |
| Side pressure taps | 6 |
LCM Core Holder
- Evaluates lost circulation material performance under mud and confining pressure
- Measures fluid loss through a sand-packed annular space around a bored core sample
- Electrical feedthroughs for strain, acoustic, and other instrumentation
- Pressure to 10,000 psi; temperature to 150°C; samples up to 4″ × 8″
SAAB Core Holder
- Shale-as-a-barrier testing for creep, annular barrier formation, and pressure isolation
- Simulates downhole stress, pressure, and temperature conditions
- Electrical feedthroughs for axial/radial strain and acoustic measurements
Creep Core Holder
- Long-term HPHT creep testing of hollow cylinder samples
- Annular closure detection via casing strain or hydraulic conductivity measurement
- 8 electrical feedthroughs and 6 integrated pore lines
- Sample: 1.5″ dia × 6″ with 0.5″ borehole
Formation Damage / Return Perm
- Drilling fluid circulates across the core face to build a filter cake
- Permeability measurement in both production and injection directions
- 6 pressure side taps for differential pressure measurement
- ¼″ port for drilling fluid with solids to prevent plugging; isostatic stress path
Electrical Properties 4-Wire Measurement Core Holder
Resistivity Index & Brine Saturation TestingDesigned for resistivity index and brine saturation testing under controlled confining pressure, pore pressure, and elevated isothermal temperature. Supports RI-Sw measurements with 4-wire resistance measurement at 1″ spacing intervals. Features a Viton sleeve with moulded probes for improved repeatability.
| Specifications | |
| Pressure rating | Up to 10,000 psi |
| Temperature rating | Up to 85°C |
| Sample size | Up to 1.5″ dia × 3″ |
| Measurement type | 4-wire at 1″ spacing |
| Sleeve material | Custom Viton moulded |
| Wetted components | SS or HC |
Pipe Cell Core Holder
Compact Permeability & Resistivity TestingDesigned for quick sample loading for permeability, core flooding, and electrical properties testing. Electrically isolated for 2-wire resistance measurement during flow testing. Compact size allows use with existing pressure systems, ovens, and laboratory setups.
| Specifications | |
| Pressure rating | Up to 15,000 psi |
| Temperature rating | Up to 85°C |
| Sample size | Up to 1.5″ dia × 12″ |
| Resistivity measurement | 2-wire |
| Electrical isolation | Yes |
| Wetted components | SS or HC |
Hassler Core Holder
Permeability & Core FloodingThe sleeve remains in place inside the core holder, allowing the sample to be quickly loaded from one end without filling or draining the confining fluid between tests. Designed for routine permeability and core flooding experiments where rapid sample turnover is required.
| Specifications | |
| Pressure rating | 6,000 psi |
| Temperature rating | 90°C |
| Wetted components | SS or HC |
| Loading method | Single-end, sleeve retained |
Quick Load Triaxial
Fast Loading with Full Triaxial CapabilityDesigned for fast sample loading while supporting isostatic and triaxial stress paths with independent axial load control. Includes radial and axial deformation measurement to accurately correct sample dimensions under stress. Supports in-place cleaning, pore volume measurement, permeability measurement, and 2-wire resistivity.
| Specifications | |
| Pressure rating | 10,000 psi |
| Temperature rating | 90°C |
| Stress paths | Isostatic & Triaxial |
| Resistivity | 2-wire |
| Wetted components | SS or HC |
X-Ray Carbon Fiber Core Holder
In-Situ Saturation X-Ray CT MonitoringUsed for relative permeability testing with in-situ saturation monitoring under X-ray CT scanning. Carbon fiber/titanium composite construction allows X-ray visibility through the sample for accurate saturation measurement. Can be equipped with mini-series needle valves for core aging and pressure transfer.
| Specifications | |
| Pressure rating | 15,000 psi |
| Temperature rating | 150°C |
| Sample size | 1.5″ dia × 12″ |
| Body material | Carbon fiber / titanium |
| X-ray compatible | Yes — full sample visibility |
| Wetted components | SS or HC |
