7 7/8 Roller Cone Drill Bit for Oil Well Drilling Bits Manufacture

• Customization: Available
• Customized: Customized
• Standard: JIS, AISI, API
• Model NO.: 537
• Length: Taper-length
• Type: Core Drill Bit
• Material: Tungsten Carbide
• Usage: Well Drilling
• Size: 7 7/8
• Connection: API Reg
• Color: Blue
• Customerized: Yes
• IADC: 517
• Weight: 42
• Seal: Rubber
• Formation: Medium Hard
• Certificate: SGS
• Package: Wooden Case
• Transport Package: Wooden Box
• Specification: 25X23X42
• Trademark: HJ
• Origin: Cangzhou, China
• HS Code: 82071990
• Production Capacity: 5000/Year

Product Description

7 7/8 roller cone drill bit for oil well drilling bits manufacture


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:

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

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