12 1/4″ SHA617Y

Specifications

Size: 12 1/4″ (311.15 mm)
IADC: 617
Bearing and Seal: Journal Bearing / O-Ring Rubber seal
No. of Rows: 6-6-5
Inner Row: Conical / 179 pcs
Gauge Row: Ovoid / 70 pcs
Bevel Row: Flat / 70 pcs
Pin Connection: 6 5/8 REG
Bit Weight (KG): 98.0
Weight on Bit (KN/mm): 0.50 ~ 1.05
ROP (rpm): 40 ~ 100

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– Adopting the Journal bearing structure, it has the ability to withstand medium WOB and adapt to higher ROP.
– The O-ring seal is made of wear-resistant and high-temperature-resistant fluorinated high-saturated nitrile rubber, which effectively improves the reliability of the bearing seal and thus increases the service life of the drill bit.
– The oil storage system can balance the pressure difference inside and outside the bearing, and provide good lubrication guarantee for the bearing system.
– Y feature, the main cutting teeth of the cone are conical teeth, which have strong fracture resistance and formation penetration ability, and are suitable for drilling in hard and brittle formations and gravel interlayers.