Well depth | 1000 m | Pore water heat conductivity coefficient | 0.5 W/(m∙K) |
Geothermal gradient | 3˚C/100 m | Slurry density | 1300 kg/m3 |
Rock density | 2700 kg/m3 | Specific heat capacity of slurry | 2800 J/(kg∙K) |
Specific heat capacity of rock | 1400 J/(kg∙K) | Surface heat transfer coefficient | 200 W/(m3∙K) |
Rock heat conductivity coefficient | 10 W/(m∙K) | Slurry heat conductivity coefficient | 1 W/(m∙K) |
Porosity | 0.1 | Drill pipe heat conductivity coefficient | 17 W/(m∙K) |
Permeability | 1e-14(D) | Drill pipe density | 7800 kg/m3 |
Internal friction angle | 30˚ | Drill pipe atmospheric heat capacity | 460 J/(kg∙K) |
Poisson’s ratio | 0.3 | Drill bit density | 3200 kg/m3 |
Biot coefficient | 1 | Drill bit heat conductivity coefficient | 1500 W/(m∙K) |
Pore water density | 1000 kg/m3 | Drill bit atmospheric heat capacity | 400 J/(kg∙K) |
Pore water specific heat capacity | 4200 J/(kg∙K) | Heat transfer coefficient | 200 W/(m2∙K) |