China 8 1 2 IADC 517 Tricone Bit Rock Roller Bit

1-Company Introduction
Hejian Ouyate Bit Manufacture Co., Ltd specialize in research and development of drilling
Equipments. We are manufacturing and marketing with senior technical staffs for many years.
The structure of our company is flexible so that the process is responsive, high quality, prompt
Delivery, perfect service.
2-Product Specifications
API & ISO standard 8 1/2 IADC 517 tricone bit
1. Specifications
1-8 1/2 IADC 517TCI tricone bit
2-Jet type sealed bearing tricone bit
3-water circulation, Elastomer sealed bearing tricone bit
4-API & ISO standard
8 1/2 IADC 517 with gauge protection, more tungsten carbide inserts are placed in the
Shirttail to reduce the wear in abrasive formations, it can increase gauge holding capability and bearing life.
1. Cutting Structure of this series tricone rock bit :
The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.The wear-resistance of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit.

2. Gauge Structure of this series tricone rock bit :
Multiple gauge protection with gauge trimmers on heel and gauge inserts on the gauge surface of the cone, tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capability and bearing life.

3.Bearing Structure of this series tricone rock bit :
High precision bearing with two thrust faces. Balls lock the cone.Hardface heard 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.

4.Seal and Lubrication of this series tricone rock bit :
The advanced metal seal package consists of two metal seats and two elastic energizers. Compressed energizers ensure good contact being kept on two sealing surfaces of metal rings by elastic force, and achieve the bearing seal. In the drilling, metal seal are relatively dynamic, and the energizers are static. This will improve the reliability and durability of bearing seal. The pressure compensator system and advanced grease can greatly increase the lubricating reliability.

5.Product Application of this series tricone rock bit :
It is suitable for downhole motor and high speed applications.

Bit Size(in)
Connection
Bit Size(in)
Connection

3 3/8, 3 3/4, 3 7/8
4 1/8, 4 1/4


2 3/8REG
9 1/2,9 5/8 , 9 7/8
10,10 1/2,10 5/8
11, 11 5/8





6 5/8REG

4 3/8, 4 1/2
4 5/8, 4 3/4
4 7/8




2 7/8REG
12,12 1/4, 12 5/16
12 3/8, 12 7/16, 12 5/8
13 1/8,13 3/4, 13 5/8
13 1/2




6 5/8REG
5 1/8, 5 1/2, 5 5/8
5 7/8
6, 6 1/8, 6 1/4
6 1/2, 6 3/4, 6 5/8
6 7/8



3 1/2REG

14 1/2, 14 3/4
15 1/2
17 1/2




7 5/8REG
7 1/2, 7 5/8, 7 7/8
8 3/8, 8 1/2
8 5/8, 8 3/4

4 1/2REG

20, 22, 24, 26

7 5/8REG



IADC CODE
(MT) 116 117 12 6127 136 137 216 217 226 226 316 317 326 327 336 337 115 125
135 215 225 235 315 325 335 114 124 214 314 111 121 131 346 347

(TCI)417 427 437 517 527 537 617 627 637 737 837 832 415 425 435 445 525 625
635 416 427 436 446 447 516 526 537 547 516 536 535