11 1/2″ SHA637GYT
Specifications
Size: 11 1/2″ (292.1 mm)
IADC: 637
Bearing and Seal: Journal Bearing / O-Ring Rubber seal
No. of Rows: 6-5-5
Inner Row: Conical / 168 pcs
Gauge Row: Ovoid / 54 pcs
Trimming Row: Wedge / 30 pcs
Bevel Row: Flat / 69 pcs
Pin Connection: 6 5/8 REG
Bit Weight (KG): 84.0
Weight on Bit (KN/mm): 0.60 ~ 1.10
ROP (rpm): 40 ~ 90
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‘- High-strength and wear-resistant carbide teeth are used, and the number of tooth rows, number of teeth, height of exposed teeth and tooth shape are optimized to improve the efficiency and life of the cutting structure of the drill bit.
– With new journal bearing structure which greatly prolongs the service life of the bearing, and has the ability to withstand high drilling pressure and adapt to high rotational speed.
– 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.
-T feature, there is a trimming row between the gauge row and bevel row to protect the cones and trim the well wall.
