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15 1/2''393.7mm IADC CODE 517 Directional Drill Tricone Drilling Bit Water Drill Bit

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Product Description

15 1/2'' TCI tricone drill bit,rock drilling bit

HENGJI BIT SPEC --- IADC CODE 5177
Diameter	15 1/2"(393.7mm)
Tooth Type	TCI
Bearing Type	Elastomer sealed bearing
Circulation Type	Mud fluid
Thread Connection	7 5/8 API REG PIN
Nozzle	three jet nozzles
Gauge Protection	Available
Shirttail Protection	Available
Operating Parameters
RPM(r/min)	140~60
WOB(KN)	0.35~1.0
Formations	Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft limestone, etc.
Application	water well,oil well,HDD,exploration,etc

STRUCTURE FEATURES

1. Journal bearing. Hardfaced head bearing surface.Inne hole of ocne is silve-plated.The load capacity and seizure resistance of the bearing is greatly improved.

2. O ring seal is mode of more wear resistant and high saturated buna-N with the increased seal section and precisely designed scaling flange in the cone sealing ares has increased the reliability of the seal.

3. All rubber compensator is used which can limit pressure differential and prevent drilling fluid from entering the lubrication system and thi provides the bearing system with good assurance of lubrication.

4. High weat resistance and excellent cutting ability pf the insert bit are given full play bu using carbide compacts of high strength and high toughness in comnination with optimized compact numbers and rows, the exposure height and special shaped compacts. For steel tooth tricone, the tooth surface is hard taced with new type of wear resistant material and thus has extended working life of the cutting structure while still maintaining high ROP.

IADC	WOB (KN/mm)	RPM (r/min)	Applicable Formations
417/437/ 447/415/435	0.35~0.9	150~70	Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, gypsum, salt, soft limestone, etc.
517/527/515	0.35~1.0	140~60	Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft limestone, etc.
537/547/535	0.45~1.0	120~50	Soft to medium formations with low compressive strength, such as medium, soft shale, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds, etc.
617/615	0.45~1.1	90~50	Medium hard formation with high compress strength, such as hard shale, limestone, sandstone, dolomite. etc
637/635	0.5~1.2	80~40	Hard formations with high compressive strength, such as sandstone, limestone, dolomite ,hard gypsum, marble, etc.
Note: The upper limits of WOB and RPM in above table should not be used simultaneously.