12 1/4 in Z813(311.15 mm)

Product ID: 66532A0002 ER 26767

Design Specifications

Total Cutters47
Total Stinger Element Count80
Stinger Element Size9/16 in
Cutter Size13mm (1/2 in)
Face Cutters(30) 13mm
Gauge Cutters(8) 13mm
Cone Cutters(9) 13mm
Blade Count8
Nozzles4 Standard Series 60N, 8 Standard Series 50N
Bit Connection6 5/8 Reg
Junk Slot Area, in223.573
GaugeLength: 5" Protection: Options Available
LengthMake-Up: 13.004 in Overall: 17.942 in
Fishing NeckDiameter: 8 in Length: 3.531 in

Operating Parameters

Bit Speed140 To 300 RPM
Weight-on-Bit6,000 To 60,000 (lbs)
2,727 To 27,270 (daN)
3 To 27 (Tonnes)
Flow Rate galUs/min500 To 1200
Hydraulic Horsepower, HSI1 To 6
Recommended Make-up Torque47300 To 47800 pound ft
The operating parameters listed here are general parameters, please contact your local Smith Bits representative for precise recommendations for your individual well.



Bit design and performance have been certified through the validation process prescribed by IDEAS simulation technology.

The Stinger's unique conical geometry delivers high point loading to fracture tough-to-drill formations more efficiently.

Placed on the blade, Stinger conical diamond elements offer improved impact resistance when drilling through inter-bedded formations or when hard inclusions such as chert or conglomerates are encountered.

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.

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.