6 1/2 in MSiR613(165.1 mm)

Product ID: 65984A0001 ER 26281

Design Specifications

Total Cutters49
Rolling Cutter Count8
Cutter Size13mm (1/2 in)
Face Cutters(22) 13mm
Gauge Cutters(6) 13mm
Cone Cutters(6) 13mm
Back-Up Cutters(15) 13mm
Blade Count6
Nozzles3 Standard Series 40N, 3 Standard 16 Fixed Port
Bit Connection3 1/2 Reg
Junk Slot Area, in24.2
GaugeLength: 2" Protection: Options Available
LengthMake-Up: 7.802 Overall: 11.489
Fishing NeckDiameter: 4.75 Length: 2.786

Operating Parameters

Bit SpeedSuitable for Rotary & PDM
Weight-on-Bit2,500 To 17,000 (lbs)
1,136 To 7,726 (daN)
1 To 8 (Tonnes)
Flow Rate galUs/min200 To 400
Hydraulic Horsepower, HSI1 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 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.

The PX feature places thermally stable diamond inserts (TSP) on the gauge to maximize gauge retention and extend bit life.