Integrated digital core analysis and imaging – Digital RCA and SCAL includes . . .
3D rock structure characterization
- 3D pore system visualization
- Total porosity
- Macroporosity and microporosity
- Fraction of connected/unconnected porosity
- Tortuosity
NMR and MICP curve simulation integrated with conventional lab measurements
- Capillary pressure curves
- Nuclear magnetic resonance (NMR) T2 decay and T2 distribution
Petro-electrical parameters simulation
- Formation resistivity factor (F, F*)
- Cementation exponent m
- Saturation exponent n
Elastic properties simulation
- Bulk modulus
- Shear modulus
- Young’s modulus
- Poisson’s ratio
- Lamé coefficients
- P-wave and S-wave velocities
Relative permeability curves simulation
- Two-phase water/oil, gas/water and gas/oil relative permeability curves for primary drainage, imbibition and secondary drainage processes
3D rock structure.
| Level | Voxel size ( μm) | Physical size (mm) |
|---|---|---|
| Full plug scale | 39.0626 | 39 x 40 x 39.6 |
| Subsample micro CT | — | — |
| Subsample nano CT | 0.07 | 0.056 x 0.056 x 0.056 |
Pore size partitioning with an overview of models from nano to plug level.
Pore size distribution and petro-electrical parameters.
Relative permeability predictions.
Rock typing
- Textural analysis/visual description
- Bulk density and PEF from dual-energy CT or micro-CT scan
- Porosity-permeability
- MICP or pore throat distribution
- Dynamic transport properties
Large, potentially connected vug systems are typically related to initial rock types 2, 3 and 6.
Unconventional reservoir study
- Nano-scale pore structure characterization
- Quantitative study of pore types and pore size distribution
- Mineral composition quantification and distribution
- Rock brittleness evaluation
Visualization of pore structure.
Quantitative study of pore structure.
Mineral composition quantification and reservoir brittleness evaluation.
Microscopic study of oil and water distribution
- Oil and gas distribution under different waterflooding conditions
- Occurrence of residual oil
- Distribution of different types of residual oil
Oil and gas distribution under different waterflooding conditions.
Distribution of different types of residual oil.
Mechanism study of formation damage
- Water self-imbibition study
- Water lock mechanism
- Water sensitivity mechanism
- Stress sensitivity mechanism
Water self-imbibition experiment.
Water lock mechanism study.
Water sensitivity mechanism study.
Stress sensitivity mechanism study.
Wettability study
iRock can provide wettability characterization from images within the pore space via quantitative assessment using a direct measurement of in-situ contact angles.
Based on a real rock sample, the contact angle is used to simulate more reasonable permeability curves and can be input into pore-scale models to make robust predictions of multiphase flow properties.
