6 1/8 in MDiZ611(155.575 mm)

Product ID: 65712A0001 ER 26067

Design Specifications

Total Cutters24
Cutter Size11mm (7/16 in)
Face Cutters(13) 11mm
Gauge Cutters(6) 11mm
Cone Cutters(5) 11mm
Blade Count6
Nozzles3 Standard Series 60N
Bit Connection3 1/2 Reg
Junk Slot Area (sq in)6.499
GaugeLength: 3" Protection: Options Available
LengthMake-Up: 8 1/8 in Overall: 11 13/16 in
Fishing NeckDiameter: 4 1/2 in Length: 3 1/16 in

Operating Parameters

Bit SpeedSuitable for Rotary & PDM
Weight-on-Bit2,500 To 22,000 (lbs)
1,136 To 9,999 (daN)
1 To 10 (Tonnes)
Flow Rate (GPM)200 To 500
Hydraulic Horsepower (HSI)1 To 6
Recommended Make-up Torque6,600 To 9,850 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.

Low Exposure (MDOC – Managed Depth Of Cut) Cutter backing raised to minimize excessive depth of cut because of formation heterogeneity to reduce cutter loading and minimize torque in transitional drilling. Minimizes cutter breakage and extends bit life.