Drill bit Parameters
Tri-cone bit type
9 7/8'' 115
API Pin Connection
6 5/8'' API REG
Very soft with low compressive strength and high drillability, such as soft shale, clay and salt bed, etc.
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.