Schlumberger

8 5/8 in Z616(219.075 mm)

Product ID: 66349A0002 ER 26597


Design Specifications

Total Cutters41
Total Stinger Element Count30
Stinger Element Size9/16
Cutter Size16mm (5/8 in)
Face Cutters(20) 16mm
Gauge Cutters(6) 16mm
Cone Cutters(9) 16mm
Back-Up Cutters(6) 16mm
Blade Count6
Nozzles6 Standard Series 50N
Bit Connection4 1/2 Reg
Junk Slot Area, in212.124
GaugeLength: 3" Protection: Options Available
LengthMake-Up: 9.636 Overall: 13.824
Fishing NeckDiameter: 6 Length: 3.447

Operating Parameters

Bit SpeedSuitable for Rotary, Steerable Motor & Rotary Steerable BHA
Weight-on-Bit3,500 To 30,000 (lbs)
1,591 To 13,635 (daN)
2 To 14 (Tonnes)
Flow Rate galUs/min300 To 650
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.

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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.