8 3/4 in MDSiR613(222.25 mm)

Product ID: 66688A0001 ER 26850

Design Specifications

Total Cutters74
Rolling Cutter Count18
Cutter Size13mm (1/2 in)
Face Cutters(27) 13mm
Gauge Cutters(6) 13mm
Cone Cutters(11) 13mm
Back-Up Cutters(30) 13mm
Blade Count6
Nozzles6 Standard Series 60N
Bit Connection4 1/2 Reg
Junk Slot Area, in211.466
GaugeLength: 2" Protection: Options Available
LengthMake-Up: 9.421 Overall: 13.609
Fishing NeckDiameter: 6 Length: 3.551

Operating Parameters

Bit SpeedRotary Steerable BHA
Weight-on-Bit4,000 To 35,000 (lbs)
1,818 To 15,908 (daN)
2 To 16 (Tonnes)
Flow Rate galUs/min325 To 800
Hydraulic Horsepower, HSI1 To 6
Recommended Make-up Torque16,600 To 21,600 pound ft
The operating parameters listed here are general parameters, please contact your local Smith Bits representative for precise recommendations for your individual well.



The ONYX 360 rolling cutter feature allows the PDC element to rotate enabling the full circumference of the diamond edge to be utilized. This prevents a wear flat developing in only one place thereby maintaining cutter sharpness for improved drillbit durability.

The PX feature places thermally stable diamond inserts (TSP) on the gauge to maximize gauge retention and extend bit life.

SHARC high-abrasion-resistance cutting structure provides two rows of cutters for superior stability and durability, and allows the bit to drill at maximum ROP for longer periods of time.