Research Article
Modelling of Formation Pore Pressure Inversion during Tight Reservoir Drilling
Table 3
The detailed information of the kicking wells.
| | Well | Kick condition | Formation lithology | Displacement (L/s) | Drilling fluid density (g/cm3) | Thickness of exposed reservoir (m) | ROP (m/h) | Permeability (md) |
| | 1 | N, E | Green grey mudstone | 15.9 | 1.70 | 0.63 | 2.88 | 1.7 | | 2 | N, E | Micrite and oolitic limestones | 36 | 1.40 | 0.26 | 1.08 | 13.9 | | 3 | N, E | Grey gypsiferous dolostone | 17 | 1.60 | 0.38 | 7.56 | 31.0 | | 4 | Y, E | Grey fine sandstone | 18 | 1.71 | 0.47 | 4.32 | 100 | | 5 | N, E | Oolitic dolostone | 15 | 1.86 | 0.53 | 4.68 | 25 | | 6 | Y, D | Black shale, argillaceous siltstone | 27 | 1.85 | 0.81 | 6.84 | 18 | | 7 | N, D | Sandstones, limestones | 12 | 1.16 | 0.34 | 8.64 | 69.4 |
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Note: Y: drilling; N: drilling stopped; E: exploratory well; D: development well.
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