14 3/4 in MDSiR813(374.65 mm)

Product ID: 66011A0001 ER 26305

Design Specifications

Total Cutters171
Rolling Cutter Count32
Cutter Size13mm (1/2 in)
Face Cutters(70) 13mm
Gauge Cutters(8) 13mm
Cone Cutters(22) 13mm
Back-Up Cutters(71) 13mm
Blade Count8
Nozzles10 Standard Series 60N
Bit Connection7 5/8 Reg
Junk Slot Area, in232.169
GaugeLength: 5" Protection: Options Available
LengthMake-Up: 14.732 Overall: 19.92
Fishing NeckDiameter: 9.38 Length: 4.123

Operating Parameters

Bit SpeedSuitable for Rotary and PDM
Weight-on-Bit6,000 To 55,000 (lbs)
2,727 To 24,998 (daN)
3 To 25 (Tonnes)
Flow Rate galUs/min500 To 1200
Hydraulic Horsepower, HSI1 To 6
Recommended Make-up Torque61,850 To 79,800 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.

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.

Increased cleaning, cooling, and cuttings evacuation with available hydraulic flows; high flow rates with minimal increase in pump pressure, and reduced risk a bit balling.