8 1/2 FS1905I Steel Body PDC Bit
Steel body PDC drill bit
Soft to medium hard formation drilling
Medium short parabolic crown profile and medium cutter density helps to obtain better ROP in soft to medium hard formation with lower compressive strength and thin hard layers.
Gauge cutter improves the gage wear-resistance to prolong the service life of the bit.
Unique backrack design
Unique backrack design helps to reduce the bit torque and increase its aggressiveness.
|Bit Size (in.)||8 1/2||12 1/4||17 1/2|
|Number of Blades||5||5||5|
|Number of Nozzles||5||7||10|
|Total Number of Cutters||31||52||78|
|Primary Cutter Size(mm)||19||19||19|
|Standard Gauge Length||2”(51mm)||3”(76mm)||4”(102mm)|
|API Reg. Pin Connex.(in.)||4 1/2||6 5/8||7 5/8|
|Recommended Operation Parameters|
|Bit Size (in.)||8 1/2||12 1/2||17 1/2|
|Hydraulic Flow Rate(L/s)||22~32||38~60||60~91|
|Hydraulic Flow Rate(Gpm)||350~500||550~850||950~1450|
* Other types and sizes could be designed and manufactured according to the specific requirments.