Research Article
A Semianalytical Two-Phase Imbibition Model in Dual-Porosity and Dual-Permeability Reservoirs
Table 2
Basic parameters of the proposed model.
| Parameter | Value | Units |
| Wellbore radius | 0.1 | m | Matrix permeability | | μm2 | Fracture permeability | 0.6 | μm2 | Matrix porosity | 0.27 | Fraction | Fracture porosity | 0.03 | Fraction | Formation height | 10 | m | Water volume factor | 1 | Fraction | Oil volume factor | 1.03 | Fraction | Irreducible water saturation | 20 | % | Residual oil saturation | 14 | % | Water viscosity | 0.5 | mPa·s | Oil viscosity | 1 | mPa·s | Shape factor | | 1/cm2 | Injection rate | 30 | m3/day | Initial pressure | 14 | MPa | Skin factor | 1 | Fraction | Rock compressibility | | 1/MPa | Oil compressibility | | 1/MPa | Water compressibility | | 1/MPa | Imbibition rate coefficient | 0.1 | 1/day | Wellbore storage coefficient | 0.01 | 1 m3/MPa |
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