Table 1
Basic parameters of Well Tiandong #5.
| Parameter | Value | Unit |
|---|---|---|
| Initial gas flux | 0.054 | m3/s |
| Drilling fluid density | 1.3 | g/cm3 |
| H2S content | 10% | |
| Surface temperature | 10 | °C |
| Well depth | 3570 | m |
| Drilling speed | 0.05 | m/s |
| Reservoir permeability | 27 | mD |
| Reservoir thickness | 1.9 | m |
| Plastic viscosity of drilling fluid | 0.027 | Pa s |
| Yield value of drilling fluid | 1.2 | Pa |
| Mud displacement | 24 | L/s |
| Geothermal gradient | 0.026 | °C/m |