8 3/4 in MiZ516(222.25 mm)

Product ID: 65498C0001

Design Specifications

Total Cutters32
Cutter Size16mm (5/8 in)
Face Cutters(21) 16mm
Gauge Cutters(5) 16mm
Cone Cutters(6) 16mm
Blade Count5
Nozzles5 Standard Series 60N
Bit Connection4 1/2 Reg
Junk Slot Area, in219.009
GaugeLength: 2" Protection: Options Available
LengthMake-Up: 9.477 Overall: 13.665
Fishing NeckDiameter: 6 Length: 3.571

Operating Parameters

Bit SpeedDesigned for use on steerable motor
Weight-on-Bit18,000 To 25,000 (lbs)
8,181 To 11,362 (daN)
8 To 11 (Tonnes)
Flow Rate galUs/min300 To 600
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 Stinger element features a highly distinctive conical geometry with a thick synthetic diamond layer, engineered to resist high impact loads and abrasive wear for superior durability.

The center location of the Stinger conical diamond in the bit enhances its stability to mitigate whirl and other artifacts that waste energy and reduce ROP. The Stinger element also provides an efficient mechanism to drill the very center of the borehole.

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

Bit design is available with ONYX fixed cutters for improved thermal stability in harder, more abrasive formations, resulting in greater wear resistance.