Soft Borehole Drilling Tricone Rotary Roller Bit

• Customization: Available
• Transport Package: Wooden Box
• Specification: 500*500*500
• Model NO.: All kind
• Origin: China
• HS Code: 84314310
• Production Capacity: 5000pieces/Year

Product Description

HENGJI BIT  SPEC		IADC CODE 437
Diameter	10 5/8"(269.9mm)
Tooth Type	TCI
Bearing Type	Elastomer sealed bearing
Circulation Type	Mud fluid
Thread Connection	6 5/8 API REG PIN
Nozzle	three jet nozzles
Gauge Protection	Available
Shirttail Protection	Available
Operating Parameters
RPM(r/min)	150~70
WOB(KN)	0.35~0.9
Formations	Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, gypsum, salt, soft limestone, etc.
Application	water well drilling,oil &gas well drilling ,HDD,exploration,geothermal well drilling,drilling projects,etc

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.
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.
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.
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.
Product Parameters
 

Product Parameters

IADC	WOB (KN/mm)	RPM (r/min)	Applicable Formations
114/116/117	0.3~0.75	180~60	Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, etc.
124/126/127	0.3~0.85	180~60	Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft limestone, etc.
134/135/136/137	0.3~0.95	150~60	Soft to medium formations with low compressive strength and high drillability, such as medium soft shale, hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbed, etc.
214/215/216/217	0.35~0.95	150~60	Medium formations with high compress strength, such as medium soft shale, hard gypsum , medium soft limestone, medium soft sandstone, soft formation with harder interbed, etc.
227	0.35~0.95	150~50	Medium hard formations with high compressive strength, such as abrasive shale, limestone, sandstone, dolomite, hard gypsum, marble,etc
Note: The upper limits of WOB and RPM in above table should not be used simultaneously.

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.

Popular models
size	IADC CODE
4 1/2''(114.3mm)	115 117 127 217 417 437 517 537 637
4 3/4''(120.7mm)	115 117 127 217 417 437 517 537 637
5 7/8''(149mm)	115 117 127 217 417 437 517 537 637
6''(152mm)	115 117 127 217 417 437 517 537 637 737
6 1/2''(165mm)	115 117 127 217 417 437 517 537 617 627 637 737
7 1/2''(190mm)	115 117 127 217 417 437 517 537 617 627 637 737
7 7/8''(200mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
8 1/2''(215.9mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
8 3/4''(222.3mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
9 5/8''(244.5mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
9 7/8''(250.8mm)	115 117 127 137 217 417 437 517 537 617 627 637 737 837
11 5/8''(295.3mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
12 1/4''(311.1mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
14 3/4''(374.7mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
15 1/2''(393.7mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
17 1/2''(444.5mm)	115 117 127 217 237 417 437 517 537 617  637
20''(508mm)	115 117 127 217 237 437 517 537 637
22''(558.8mm)	115 117 127 217 437 517 537 637
24''(509.6mm)	115 117 127 217 437 517 537