Model NO.: ROS 8 1/2"
Sale: Tricone Drill Bits for Sale
Sizes: Tricone Bit Sizes
Type No: Tricone Bits for Sale
Item: Cone Drill Bit
Application: Oil, Gas and Water Well Drilling
Product Name: TCI Tricone Bit
Bearying Type: Elastomer Sealed Bearing
Trademark: ROSCHEN
Transport Package: Wooden Box
Specification: 8 1/2"
Origin: China
HS Code: 843143210
Tricone Bit Manufacturers 8 1/2 Inch Tricone Rotary Drill Bits
Tricone Roller bit is the most widely used drilling bit. When the roller cone bit is working, the cutting teeth alternately contact the bottom of the well, the torque of breaking the rock is small, the contact area between the cutting tooth and the bottom of the well is small, the specific pressure is higher, and it is easy to eat into the formation; the total working length of the working blade is large, thus relatively reducing the wear. Roller bit can adapt to a variety of formations from soft to hard.
According to the number of cones, it can be divided into single-cone bit, tri-cone bit, and assembled multi-cone bit. According to the cutting material can be divided into steel teeth (milled teeth) and insert tooth bit.
The Tricone roller cone bit has been widely used as a tool for drilling rock formations, and a significant improvement in the performance of the bit directly reduces the cost of drilling, especially in the last ten years. The two performance indicators, life time and drilling speed, ultimately determine the extent to which the drill bit affects drilling costs. Raising the penetration rate and service life of the drill bit is an effective way to reduce the drilling cost. It is verified by the data that the improvement of the drilling speed is more effective than the improvement of the bit life to reduce the drilling cost. The improvement of the cutting structure of the drill bit is to improve the drilling machine's machinery. The most direct method of drilling speed. For a long time, people's improvement of the cutting structure mainly focused on the main cutting tooth structure. For example, in the cemented carbide tooth structure, people have successively invented wedge-shaped teeth, spoon-shaped teeth, partial-topped spoon-shaped teeth, and other wearable teeth. . People gradually realized that the gauge structure also has a great impact on the penetration rate and life of drills. In particular, the drill bit used in high-angle wells and horizontal wells requires a reasonable diameter-preserving structure, and many new gauge structures have been researched and developed. Applied to the roller cone bit has achieved good results.
 Product Description
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Tricone Roller bit is the most widely used drilling bit. When the roller cone bit is working, the cutting teeth alternately contact the bottom of the well, the torque of breaking the rock is small, the contact area between the cutting tooth and the bottom of the well is small, the specific pressure is higher, and it is easy to eat into the formation; the total working length of the working blade is large, thus relatively reducing the wear. Roller bit can adapt to a variety of formations from soft to hard.
According to the number of cones, it can be divided into single-cone bit, tri-cone bit, and assembled multi-cone bit. According to the cutting material can be divided into steel teeth (milled teeth) and insert tooth bit.
The Tricone roller cone bit has been widely used as a tool for drilling rock formations, and a significant improvement in the performance of the bit directly reduces the cost of drilling, especially in the last ten years. The two performance indicators, life time and drilling speed, ultimately determine the extent to which the drill bit affects drilling costs. Raising the penetration rate and service life of the drill bit is an effective way to reduce the drilling cost. It is verified by the data that the improvement of the drilling speed is more effective than the improvement of the bit life to reduce the drilling cost. The improvement of the cutting structure of the drill bit is to improve the drilling machine's machinery. The most direct method of drilling speed. For a long time, people's improvement of the cutting structure mainly focused on the main cutting tooth structure. For example, in the cemented carbide tooth structure, people have successively invented wedge-shaped teeth, spoon-shaped teeth, partial-topped spoon-shaped teeth, and other wearable teeth. . People gradually realized that the gauge structure also has a great impact on the penetration rate and life of drills. In particular, the drill bit used in high-angle wells and horizontal wells requires a reasonable diameter-preserving structure, and many new gauge structures have been researched and developed. Applied to the roller cone bit has achieved good results.
 Product Description
| Size of Rock Bit | 8 1/2inch             215.9 MM |
| IADC Code | 537 |
| Thread Connection | 4 1/2 API REG PIN |
| Operating Parameters | |
| WOB (Weight On Bit) | 19684~53428lbs |
| 0.50~1.05 | |
| RPM | 110~40 |
| Formation | Medium formation with high compressive strength ,such as medium soft shale,medium softlimestone,medium soft sandstone,medium formation with harder and abrasive interbeds,etc. |
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| IADC | Rock formation | WOB (KN/mm) | PRM(r/min) |
| 415/425/435 | Low compressive strength, high drill-ability and extremely soft formation, like shale, clay, sandstone, conglomerate etc | 0.35~0.90 | 140~70 |
| 447 | Low compressive strength, high drill-ability and soft formation, like shale, clay, sandstone, soft limestone, salt rock, plaster etc. | 0.35~1.00 | 140~60 |
| 517 | Low compressive strength, high drill-ability and soft formation, like shale, clay, sandstone, soft limestone, salt rock, etc | 0.35~1.05 | 120~50 |
| 527 | Soft formation with low compressive, like Low compressive strength, high drill-ability and soft formation, like shale, clay, sandstone, soft limestone, salt rock, anhydrite etc. | 0.35~1.05 | 120~50 |
| 537/547 | Low compressive strength, medium hard formation with hard abrasive interlayer, like Hard shale, anhydrite, soft limestone, sandstone, dolomite with mezzanine, etc. | 0.50~1.05 | 110~40 |
| 617/627 | High compressive strength, medium hard and thick hard interlayer, like hard shale, limestone, sandstone, dolomite, etc. | 0.50~1.05 | 80~40 |
| 637/647 | High compressive strength, medium hard and high abrasive formation, like limestone, dolomite, sandstone, chert, etc. | 0.7~1.20 | 70~40 |
Tricone Bit manufacturers 8Â 1/2 inch Tricone Rotary Drill Bits
Cutting Structure
The wear-resistance of the teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for the steel tooth bit.The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit
Gauge Structure
Multiple gague protection with gauge trimmers on the heel and gauge inserts on the gauge surface of the cone,tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capacity and bearing life.
Bearing Structure
High precision journal bearing with two thrust faces,Balls lock the cone.Hardfaced head bearing surface.Cone bearing inlaid with friction-reducing alloy and then silver-plated.Abrasion resistance and seizure of the bearing are improved.and suitable for high rotary speed
Seal and Lubrication
The advanced metal seal package consists of two metal seals and two elastic energizers.Compressed energizers ensure good contact being kept on two sealing surfaces of metal rings by elastic force,and achieves the bearing seal.In the drilling,metal seals 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.
Product Application
It is suitable for down hole motor and high speed applications
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| NO. | TRICONEÂ ROCKÂ BITÂ SIZE | APIÂ THREADÂ REG.PINÂ | |
| in | mm | ||
| 1 | 3Â 3/4 | 95.3 | 2Â 3/8 |
| 2 | 3Â 7/8 | 98.4 | 2Â 3/8 |
| 3 | 4Â 1/8 | 104.8 | 2Â 3/8 |
| 4 | 4Â 1/4 | 108 | 2Â 3/8 |
| 5 | 4Â 1/2 | 114.3 | 2Â 3/8 |
| 6 | 4Â 5/8 | 117.5 | 2Â 7/8 |
| 7 | 4Â 3/4 | 120.7 | 2Â 7/8 |
| 8 | 4Â 7/8 | 123.8 | 2Â 7/8 |
| 9 | 5Â 1/2 | 139.7 | 3Â 1/2 |
| 10 | 5Â 5/8 | 142.9 | 3Â 1/2 |
| 11 | 5Â 2/3 | 143.9 | 3Â 1/2 |
| 12 | 4Â 3/4 | 146.1 | 3Â 1/2 |
| 13 | 5Â 7/8 | 149.2 | 3Â 1/2 |
| 14 | 6 | 152.4 | 3Â 1/2 |
| 15 | 6Â 1/8 | 155.6 | 3Â 1/2 |
| 16 | 6Â 1/4 | 158.8 | 3Â 1/2 |
| 17 | 6Â 1/2 | 165.1 | 3Â 1/2 |
| 18 | 6Â 5/8 | 168.3 | 3Â 1/2 |
| 19 | 6Â 3/4 | 171.5 | 3Â 1/2 |
| 20 | 7Â 1/2 | 190.5 | 4Â 1/2 |
| 21 | 7Â 5/8 | 193.7 | 4Â 1/2 |
| 22 | 7Â 7/8 | 200 | 4Â 1/2 |
| 23 | 8Â 3/8 | 212.7 | 4Â 1/2 |
| 24 | 8Â 1/2 | 215.9 | 4Â 1/2 |
| 25 | 8Â 5/8 | 219.1 | 4Â 1/2 |
| 26 | 8Â 3/4 | 222.3 | 4Â 1/2 |
| 27 | 9Â 1/2 | 241.3 | 6Â 5/8 |
| 28 | 9Â 5/8 | 244.5 | 6Â 5/8 |
| 29 | 9Â 7/8 | 250.8 | 6Â 5/8 |
| 30 | 10Â 1/2 | 266.7 | 6Â 5/8 |
| 31 | 10Â 5/8 | 269.9 | 6Â 5/8 |
| 32 | 11 | 279.4 | 6Â 5/8 |
| 33 | 11Â 5/8 | 295.3 | 6Â 5/8 |
| 34 | 12 | 304.8 | 6Â 5/8 |
| 35 | 12Â 1/4 | 311.2 | 6Â 5/8 |
| 36 | 12Â Â 5/16 | 312.7 | 6Â 5/8 |
| 37 | 13Â 3/8 | 314.3 | 6Â 5/8 |
| 38 | 12Â Â 7/16 | 315.9 | 6Â 5/8 |
| 39 | 12Â 5/8 | 320.7 | 6Â 5/8 |
| 40 | 13Â 1/8 | 333.4 | 6Â 5/8 |
| 41 | 13Â 1/2 | 342.9 | 6Â 5/8 |
| 42 | 13Â 5/8 | 346.1 | 6Â 5/8 |
| 43 | 13Â 3/4 | 349.3 | 6Â 5/8 |
| 44 | 14Â 1/2 | 368.3 | 7Â 5/8 |
| 45 | 14Â 3/4 | 374.7 | 7Â 5/8 |
| 46 | 15Â 1/2 | 393.7 | 7Â 5/8 |
| 47 | 16 | 406.4 | 7Â 5/8 |
| 48 | 17Â 1/2 | 444.5 | 7Â 5/8 |
| 49 | 18Â 7/8 | 479.4 | SS Propeller Shaft 316L Steel Round Bar,Round Steel Bar,316L Round Bar Ningbo Qiyi Precision Metals Co., Ltd. , http://www.qiyi-metal.com |