8 1/2 in MSiZ516(215.9 mm)

Product ID: 66727A0001

Design Specifications

Total Cutters56
Cutter Size16mm (5/8 in)
Face Cutters(44) 16mm
Gauge Cutters(6) 16mm
Cone Cutters(6) 16mm
Total Stinger Element Count1
Blade Count5
Nozzles5 Standard Series 50N
Bit Connection4 1/2 Reg
Junk Slot Area, in212.58
GaugeLength: 2" Protection: Options Available
LengthMake-Up: 9.674 Overall: 13.862
Fishing NeckDiameter: 6 Length: 3.603

Operating Parameters

Bit SpeedSuitable for Rotary & PDM
Weight-on-Bit4,000 To 35,000 (lbs)
1,818 To 15,908 (daN)
2 To 16 (Tonnes)
Flow Rate galUs/min300 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.



Impregnated diamond material is applied to the gauge pads to enhance wear resistance. This additional diamond volume will help prevent the gauge pads from going under gauge.

Bit design is available with RockStorm PDC technology. These all-in-one cutters break the paradigm and provide ultimate wear resistance and ultimate impact resistance in the same PDC cutter. As a result, faster drilling rates are delivered while increasing overall run length.

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.