Table 2
. HOC and underreamer models and specifications.|
HOC model |
UR body size (in.) |
OD casing (in.) |
Hole size drilled (in.) |
WOB (klb) |
Rev/min (rpm) |
| DTU 1175 |
11 |
20, 16, 13 |
11 to 22
|
0-20 | 70-110 |
| DTU 950 |
9 |
10 |
9 to
14 |
0-15 | 70-110 |
Note: UR - underreamer.