8 1/2 in MDiZ516(215.9 mm)

Product ID: 65741A0001 ER 26090

Design Specifications

Total Cutters30
Cutter Size13mm (1/2 in), 16mm (5/8 in)
Face Cutters(19) 16mm
Gauge Cutters(6) 16mm
Cone Cutters(2) 13mm, (3) 16mm
Blade Count5
Nozzles5 Standard Series 50N
Bit Connection4 1/2 Reg
Junk Slot Area (sq in)11.696
GaugeLength: 2" Protection: Options Available
LengthMake-Up: 9 3/8 in Overall: 13 9/16 in
Fishing NeckDiameter: 6" Length: 3 11/16 in

Operating Parameters

Bit SpeedRotary Steerable BHA and Downhole
Weight-on-Bit18,000 To 32,000 (lbs)
8,181 To 14,544 (daN)
8 To 14 (Tonnes)
Flow Rate (GPM)500 To 600
Hydraulic Horsepower (HSI)1 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 advanced ONYX cutter technology. This includes the next generation ONYX II cutters that have superior abrasive wear and exceptional resistance to thermal degradation, enhancing cutter durability for increased footage drilled and faster ROP.