Drill bit Parameters | |||
Tri-cone bit type | 9 7/8'' 115 | Diameter | 250.8mm |
IADC | 115 | API Pin Connection | 6 5/8'' API REG |
WOB(KN/mm) | 0.35~0.9 | RPM(r/min) | 150~80 |
Applicable Formation | Very soft with low compressive strength and high drillability, such as soft shale, clay and salt bed, etc. | ||
Features | It can sustain higher WOB under normal rotary speed and is suitable for drilling in formations from very soft to middle hard by properly selecting different cutting structure. | ||
Note: the upper limits for the bit weight and rotary speed recommend in the table can not be used at the same time. |