8 1/2 in FHKi69UYDOD1VPS(215.9 mm)

Product ID: 0061064010 ER 8259 IADC 647Y

Design Specifications

Bearing TypeSpinodal* 2 Bearing w/Silver Plated Components
Seal TypeHigh Temperature Fabric Competent Seal
Bit Connection Type4 1/2 Reg
Journal Angle (┬░)36
Offset (inches)0.031
RowsTotal: 17 Inner: 14 Gage: 3
Inserts/TeethTotal: 191 Inner: 146 Gage: 45

Operating Parameters

Weight on Bit20,000 To 55,000 (lbs)
9,090 To 24,998 (daN)
9 To 25 (Tonnes)
Rotary Speed (RPM)50 To 240
The operating parameters listed here are general parameters, please contact your local Smith Bits representative for precise recommendations for your individual well.



Advanced fabric composite seals and specialized high temperature grease designed with improved heat and wear resistance to enhance bit life at elevated temperatures.

The geometry of conical inserts is optimized to reduce insert breakage and maximize ROP in WOB sensitive formations.

Diamond enhanced gauge inserts eliminate gauge wear in abrasive and hard-formation applications, and allow the bit to drill at a faster ROP for longer periods of time.

100% diamond enhanced heel row inserts provide maximum durability in extremely abrasive applications. The bit will drill longer intervals of full gauge hole, and eliminate the need for expensive reaming operations.