8 3/8 in ZR713(212.725 mm)

Product ID: 66620A0001 ER 26809

Design Specifications

Total Cutters51
Total Stinger Element Count25
Stinger Element Size9/16
Cutter Size13mm (1/2 in)
Face Cutters(32) 13mm
Gauge Cutters(7) 13mm
Cone Cutters(10) 13mm
Back-Up Cutters(2) 13mm
Blade Count7
Nozzles6 Standard Series 50N, 1 Standard 13 Fixed Port
Bit Connection4 1/2 Reg
Junk Slot Area, in27.926
GaugeLength: 3" Protection: Options Available
LengthMake-Up: 9.895 Overall: 14.083
Fishing NeckDiameter: 6 Length: 3.31

Operating Parameters

Bit SpeedSuitable for Rotary & PDM
Weight-on-Bit4,000 To 26,000 (lbs)
1,818 To 11,817 (daN)
2 To 12 (Tonnes)
Flow Rate galUs/min325 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.



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 ONYX 360 rolling cutter feature allows the PDC element to rotate enabling the full circumference of the diamond edge to be utilized. This prevents a wear flat developing in only one place thereby maintaining cutter sharpness for improved drillbit durability.

Placing thermally stable diamond inserts (TSP) on the gauge maximizes gauge retention and extends bit life.