API 8 1/2 Inch API Tricone Drill Bit

• Transport Package: Wooden Case
• Specification: SGS
• Origin: Hebei
• HS Code: 82071990
• Production Capacity: 50000PS/Year

Product Description

1 Specifications:


Size17 1/2"
IADC517
Bearing TypeElastomer sealed journal bearing
Thread Connection7 5 /8" reg pin
WOB(KN/mm)0.45~1.0
RPM(r/min)120~50
Applicable Formations medium to hard hardness formations with low compressive strength, such as medium, soft shale, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds, etc
Circulation systemMud pump
2. Deatail:

Available sizes:

60mm, 65mm, 76mm, 93mm, 95mm, 98mm(3 7/8"), 101.6mm, 114mm, 118mm, 120mm, 127mm(5")
130.1mm(5 1/8"), 133.3mm(5 1/4"), 139.7mm(5 1/2"), 142.8mm(5 5/8"), 149.2mm(5 7/8")
152.4mm(6"), 155.5mm(6 1/8"), 158.7mm(6 1/4"), 161.9mm(6 3/8"), 165.1mm(6 1/2")
190.5mm(7 1/2"), 193.6mm(7 5/8"), 200.0mm(7 7/8")
212.7mm(8 3/8"), 215.9mm(8 1/2"), 222.2mm8 3/4")
241.3(9 1/2"), 244.4(9 5/8"), 250.8(9 7/8")
269.8(10 5/8"), 295.3(11 5/8")
311.1(12 1/4"), 346.0 (13 5/8"), 349.2(13 3/4")
374.6(14 3/4")
381(15"), 393.7(15 1/2"), 406.4(16")
444.5(17 1/2"), 508(20"), 558(22"), 609.6(24")
660.4(26")
Available models:

ROLLER  CONE BITS	ROLLER CONE BIT  (M/H)		FORMATION  HARDNESS	FORMATION	ROCK TYPE	COMPRESS  STRENGTH
	WEM	OBM
111/124	15-30	18-33	Very  soft	soft formation with sticky layers and low compressive strength	clay,silts, sands	<25 MPa
116/137 437	9-15	12-18	soft	soft formation with low compressive strength and high drill ability	claystone,marl, lignite,tuff, sandstone	25-50 MPa
126/139 517/527	4.5-9	6-12	Medium  soft	soft to medium formation with low compressive strength interb dded with hard layers	claystone,marl lignite,sandstone silts anhydrrites tuff	50-75 MPa
211/217 517/537	2.5-6	3-6	Medium	medium to hard formation with high compressive strength and small abrasive layers	mudstone , limstone, anhydrites, sandstone	75-100 MPa
211/236 537/617	1.5-2.5	1.5-3	Medium  hard	hard and dense formation with very high compressive strength but non-abrasive	limestone, anhydrites, dolomite	100-120MPa
311/347 627/637	1-1.5	1-1.5	Hard	hard and dense formation with very high compressive strength and some abrasive layer	shale,sandstone ,siliceous, siltstone	100-200MPa
637 /737 /837	1	1	Very  hard	extremely hard and abrasive formtions	quartzite, lgneous ,rocks	>200MPa

 


Steel tooth
(IADC)111, 121, 131
117, 124, 126, 127, 136, 137
211, 311
216, 217, 227
TCI
(IADC)415, 435, 417, 437
515, 525, 535, 545, 517, 527, 537, 547
615, 625, 635, , 617, 627, 637, 737
512, 522, 532, 612, 622, 632, 732