Table 3. DDI bi-center reamer models and specifications.
|
DDI bi-center model |
Pass-through size (in.) |
Hole size (in.) |
WOB max. (lb) |
Rev/min (rpm) |
Est. rot. hours (hr) |
Est. ROP (ft/hr) |
| B#182x215 | 18.25 | 21.5 | 100K | 50-60 | 60-80 | 20-2 |
| B#145x185 | 14.5 | 18.5 | 70K | 60-70 | 60-80 | 30-2 |
| B#122x146 | 12.25 | 14.625 | 40K | 60-70 | 60-80 | 25-2 |
Notes: Est. = estimated; rot. = rotating; ROP = rate of penetration.