12 1/4" FA437G , Rock Bit, Water Well Drilling Bit , TCI Bit , 6 5/8" API REG. PIN
RECOMMENDED DRILLING PARAMETERS FOR APPLICATION
Types & IADC Code | 417 |
437 447 |
517 527 |
517 527 |
537 547 |
617 627 |
637
|
|
WOB | KN/mm(Bit Dia.) | 0.4~0.9 | 0.4~0.9 | 0.35~1.0 | 0.35~1.0 | 0.5~1.0 | 0.6~1.1 | 0.7~1.2 |
Lb/in. (Bit Dia.) | 2285~5142 | 2285~5142 | 2000~5714 | 2000~5714 | 2857~5714 | 3428~6285 | 4000~6857 | |
Rotation Speed (Rpm) | 140~60 | 240~70 | 125~50 | ~60 | 110~50 | 100~40 | 80~4 |