IADC 437 Tungsten Carbide Tricone Drill bits 8 1/2 inch for Medium
Hardness Rock Formation Drilling
Tricone bit, insert design, design of the bearing friction sealing
protected OD, diameter 8 - 1/2 in, number of cones 3, type of
connection API REG SHANK, size of the connection 4-1/2 IN,
additional protection leg and cone, type of protection additional
insert of CARBIDE tungsten, IADC code 437, nozzle does not include
tip CENTRAL, standard of manufacture API 7-1 last edition
Reinforced tooth medium hard rock tricone bit
1) soft rock teeth apply for: low compressive strength of the soft
formations, such as mudstone, gypsum, salt rock, soft shale, soft
limestone
2) Medium Hardness Rocks Applies to soft to medium formations with
low compressive strength such as medium soft shale, medium soft
limestone, medium soft sandstone and medium formations with harder
abrasive interbeds
3) hard rock teeth apply to: high compressive strength, hard and
abrasive formations, such as hard shale, limestone, sandstone,
dolomite, flint, etc.
Features:
1. The use of high strength and high toughness of cemented carbide
teeth to improve the impact resistance of the teeth to reduce the
teeth rate;
2. Optimize the design of the number of teeth, the number of teeth,
exposed teeth and unique alloy tooth profile, give full play to the
drill cutting capacity and cutting speed;
3. The use of retaining ring locking cone, can withstand high
pressure;
4. Cone hole inlay welding alloy, improve the resistance of the
bearing resistance;
5. The use of high saturated nitrile rubber O-ring, optimized seal
compression to improve the reliability of the bearing seal;
6. The use of a rubber hose that limits the differential pressure
and prevents the drilling fluid from entering the lubrication
system provides a good lubrication for the bearing system and
ensures that the "O" ring is working properly and improves the
working life of the drill bit;
7. The use of resistance to 250 ℃ high temperature, low wear and
tear of the new grease, improve the bit seal lubrication system
high temperature resistance.
Product advantages:
The use of conventional speed can withstand higher drilling
pressure.
| TRICONE DRILL BITS - STANDARD CONNECTION SIZES * |
| SIZE | STANDARD PIN CONNECTION |
| 2 1/2" to 2 3/4" inclusive | A - AW Rod |
| 2 7/8" to 3 3/8" inclusive | N4 Rod |
| 3 1/2" to 4 1/2" inclusive | 2 3/8" API |
| 4 5/8" to 5" inclusive | 2 7/8" API |
| 5 1/8" to 7 3/8" inclusive | 3 1/2" API |
| 7 1/2" to 9 3/8" inclusive | 4 1/2" API |
| 9 1/2" to 14 3/8" inclusive | 6 5/8" API |
| 14 1/2" to 18 1/2" inclusive | 6 5/8" API or 7 5/8" API |
| 18 5/8" to 26" inclusive | 7 5/8" API or 8 5/8" API |
| 27" and larger | 8 5/8" API |
| *Tricone bits are available with alternative connection sizes on
request. |
For more information, please contact:
ROSCHEN GROUP LIMITED
Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
WeChat: +86-137 6419 5009 ; +86-135 8585 5390
WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
Email: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschen.com ; http://www.roschen.net
http://www.roschen.cn ;
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