Table A3
SR4 model input parameters for Niger Delta sediments.
| Property | Value | Units |
|---|---|---|
| Bulk modulus at deposition (K0) | 100 | MPa |
| Poisson ratio (υ) | 0.3 | |
| Grain density (ρs) | 2700 | kg/m3 |
| Reference porosity (φ) | 0.45 | – |
| Reference tensile intercept (pt) | 0.01 | MPa |
| Reference pre-consolidation pressure (pc) | −0.1 | MPa |
| Yield surface shape parameter (β) | 60.0 | ° |
| Yield surface shape exponent (n) | 1.6 | – |
| Flow potential shape parameter (ψ) | 53.0 | ° |
| Flow potential surface shape exponent (m) | 1.6 | |
| Deviatoric plane shape parameter 1 (β0) | 0.6 | – |
| Deviatoric plane shape parameter 2 (β1) | 0.6 | – |
| Deviatoric plane shape exponent | 0.25 | – |
| k | 0.02 | – |
| λ | (determined from compaction curve shown in Fig. 10b) |