Schlumberger

8 3/8 in MDiR813(212.725 mm)

Product ID: 66160A0001 ER 26448


Design Specifications

Total Cutters66
Rolling Cutter Count14
Cutter Size13mm (1/2 in)
Face Cutters(33) 13mm
Gauge Cutters(11) 13mm
Cone Cutters(11) 13mm
Back-Up Cutters(11) 13mm
Blade Count8
Nozzles4 Standard Series 50N, 4 Standard 12 Fixed Port
Bit Connection4 1/2 Reg
Junk Slot Area, in27.296
GaugeLength: 3" Protection: Options Available
LengthMake-Up: 10.37 Overall: 14.558
Fishing NeckDiameter: 6 Length: 3.698

Operating Parameters

Bit SpeedSuitable for Rotary and PDM
Weight-on-Bit4,000 To 35,000 (lbs)
1,818 To 15,908 (daN)
2 To 16 (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.

style

style

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.

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.

Backup Stinger conical diamond elements offer improved impact resistance when hard inclusions such as chert or conglomerates are encountered while drilling.

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