6 1/2″ DHV117G


Size: 6 1/2″ (165.1 mm)
IADC: 117
Bearing and Seal: Journal Bearing / Composite seal
No. of Rows: 3-2-2
Inner Row: Wedge mill teeth / 26 pcs
Gauge Row: Wedge mill teeth / 33 pcs
Trimming Row: Wedge / 10 pcs
Bevel Row: Flat / 33 pcs
Pin Connection: 3 1/2 REG
Bit Weight (KG): 21.0
Weight on Bit (KN/mm): 0.35 ~ 0.90
ROP (rpm): 80 ~ 150



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– Applied with new tooth bits design, with hardfacing on the tooth surface and bevel of the cones. Attached carbide inserts on the bevel of cones as well to protect the diameter.
– New designed journal bearing applied, which could prolong the bearing’s life a lot and It has the ability to withstand medium drill pressure and adapt to higher rotation speed.
– Adopting a new type of flat sealed bearing structure, which increases the stability of the sealed structure and greatly prolongs the working life of the bearing.
– The oil storage system can balance the pressure difference inside and outside the bearing, and provide good lubrication guarantee for the bearing system.
– T feature, there is a trimming row between the gauge row and bevel row to protect the cones and trim the well wall.