Schlumberger

8 1/2 in FHK30OD(215.9 mm)

Product ID: 0061197020 ER 8285 IADC 537X


Design Specifications

Bearing TypeSpinodal™ 2 Bearing w/Silver Plated Components
Seal TypeHigh Temperature Fabric Competent Seal
Bit Connection Type4 1/2 Reg
Journal Angle (°)32.5
Offset (inches)0.219
RowsTotal: 13 Inner: 10 Gage: 3
Inserts/TeethTotal: 131 Inner: 87 Gage: 44

Operating Parameters

Weight on Bit20,000 To 50,000 (lbs)
9,090 To 22,725 (daN)
9 To 22 (Tonnes)
Rotary Speed (RPM)260 To 80
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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Advanced fabric composite seals and specialized high temperature grease designed with improved heat and wear resistance to enhance bit life at elevated temperatures.

Diamond enhanced heel inserts maintain gauge in abrasive, hard formation drilling and significantly increase cone durability. This feature extends bit life and ensures that a full gauge hole is drilled.

Spinodal 2 bearing with silver plated components ensures longer runs at higher ROP. This proprietary material offers maximum wear resistance and withstands extreme load forces for longer periods than conventional bearing materials.