6 3/4'' 171.5mm IADC CODE 537 Tricone Bit Blast Hole Bits

Model:
537
Min. Order:
1
Port:
tianjin,shanghai
Payment Terms:
T/T
Usage:
water well,oil well,HDD,exploration,etc
Condition:
new

Availability:

Quantity:



Inquire Add to Basket

Product Description

Specification:

HENGJI BIT SPECIFICATION
Bit Size	6 3/4'' ( 171.5mm)
IADC Code	537
Series	HR
Tooth type	TCI/tungsten carbide insert
Connection	3 1/2 API REG PIN
Bearing	rubber sealed bearing
Nozzle	three jet nozzles
Rotary Speed(rpm)	120~50
Weight on Bit(KN/MM)	0.45~1.0
Application	water well,oil well,HDD,exploration,etc
Formation	Soft to medium formation with low compressive strength,such as medium soft shale,medium soft limestone,medium soft sandstone,etc.

Features:

1.Bearing Structure: High precision journal bearing with two thrust faces. Ball locked cone. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved, and suitable for high rotary speed.

2.G-Gauge protection: more tungsten carbide inserts are placed in the gauge to reduce the wear in the abrasive formation. It can protect gauge and increases the stability and life of the bit.

3.Nozzle：These nozzles are much sturdier and provide greater flow capacity and maximize fluid distribution to the cones.

Technology:

1.Motor hardfacing: Tungsten carbide particle hardfacing is applied liberally along the shirttail and extended up the leading edge of the bit leg for additional protection in high-speed, directional or abrasive applications

2.Seal and Lubrication: The bearing seal is adapting the high quality HNBR O-ring. The best seal compression and the radial seal structure can enhance the seal performance. The compensation system and the high quality bit grease can limit pressure differential, and greatly increase the lubricating reliability.

IADC CODE:

Bit Type	IADC	Recommend parameter		Apply formation
		Pulldown (kN/mm)	Rotation speed (r/min)
Rubber sealed	117	0.35~0.90 150~80		Extremely soft formations with low compressive strength and high drillability, such as soft shale, clay, salt rock, etc.
	127	0.35~1.00 150~70		Low compressive strength, high drillability soft formation, such as shale clay, salt rock, soft limestone,etc
	417	0.35~0.90 140~70		Extremely soft formations with low compressive strength and high drillablity, such as shale, clay, sandstone, conglomerate, etc
	437	0.35~0.95 140~60		Extremely soft formations with low compressive strength and high drillability, such as shale, clay, sandstone, conglomerate, etc
	447	0.35~1.00 140~60		Soft formations with low compressive strength and high drillability, such as shale, clay, salt rock, sandstone, soft limestone, gypsum, etc.
	517	0.35~1.05 120~50		Soft formations with low compressive strength and high drillability, such as shale, clay, sandstone, soft limestone, etc.
	527	0.35~1.05 120~50		Soft formations of compressive strength, such as shale, clay, sandstone, soft limestone, salt rock, anhydrite, etc.
	537 547	0.35~1.05 110~40		Compressive strength, medium soft, with hard abrasive interlayer, such as hard shale, anhydrite, soft limestone, sandstone, etc
	617 627	0.35~1.05 80~40		High compressive strength, medium to hard, with thick hard intercalations such as hard shale, limestone, dolomite, sandstone, etc
	637	0.70~1.20 70~40		High compressive strength, high abrasive and medium hard formations such as limestone, dolomite, sandstone,flint,etc