9 7/8″ WHV117GT

Specifications

Size: 9 7/8″ (250.83 mm)

IADC: 117

Bearing and Seal: Journal Bearing / Composite seal

No. of Rows: 3-3-2

Inner Row: Wedge mill teeth / 25 pcs

Gauge Row: Wedge mill teeth / 37 pcs

Trimming Row: Wedge / 28 pcs

Bevel Row: Flat / 29 pcs

Pin Connection: 6 5/8 REG

Bit Weight (KG): 62.0

Weight on Bit (KN/mm): 0.35 ~ 0.90

ROP (rpm): 80 ~ 150

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– Applied with new tooth bits design, with hard facing on the tooth surface and bevel of the cones. Attached carbide inserts on the bevel of cones as well to protect the diameter.
– Adopting the Journal bearing structure, it has the ability to withstand medium WOB and adapt to higher ROP.
– 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.