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![]() |
0-20 | 70-110 |
DTU 950 |
9![]() |
10![]() |
9![]() ![]() |
0-15 | 70-110 |
Note: UR - underreamer.