Research Article
Estimation of Wellbore and Formation Temperatures during the Drilling Process under Lost Circulation Conditions
Table 1
Basic data of drill string assembly and casing program.
| | Drill pipe | Drill collar | First casing | Second casing | Third casing |
| Inner diameter (mm) | 151 | 70 | 486 | 318 | 224 | Outer diameter (mm) | 168 | 171 | 508 | 340 | 244 | Depth (m) | 4000 | — | 600 | 1500 | 3000 | Depth to cement (m) | — | — | 0 | 300 | 1400 |
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