Tricone Bits
Tricone bits, which some may also call roller cone bits or tri-cone bits, have three cones. Each cone can be rotated individually when the drill string rotates the body of the bit. The cones have roller bearings fitted at the time of assembly. The rolling cutting bits can be used to drill any formations if the proper cutter, bearing, and nozzle are selected.
Guidance of Tricone Bit Choice
| ROLLER CONE BITS(IADC) |
ROLLER CONE(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 lom compressive strength |
Clay,Silts,Sands |
<25MPa |
| 116/137/437 |
9-15 |
12-18 |
Soft |
Soft formation with lom compressive strength and high drillability |
Claystone,Marl,Lignite,Sandstone,Tuff |
25-50MPa |
| 136/137/517/527 |
4.5-9 |
6-12 |
Medium soft |
Soft to medium formation with lom compressive strength interbed with hard layers |
Claystone,Marl,Lignite,Sandstone,Silts ,Anhydrites,Tuff |
50-75MPa |
| 211/217/517/537 |
2.5-6 |
3-6 |
Medium |
Medium to hard formation with high compressivestrength and small abrasive layers |
Mudstone Limestone Anhydrite Sandstone(Calcareous) |
75-100MPa |
| 211/236/537/617 |
1.5-2.5 |
1.5-3 |
Medium Hard |
Hard and dense formation with very high compressivestrength but non abrasive |
Limestone,Anhydrite,Dolomite |
100-120MPa |
| 311/347/627/637 |
1-1.5 |
1-1.5 |
Hard |
Hard and dense formation with very high compressivestrengthand some abrasive layers |
Shale(Calcareous),Sandstone(Siliceous) ,Siltstone |
100-200MPa |
| 637/737/837 |
1 |
1 |
Very Hard |
Extremely hard and abrasive formations |
Quartzite,Igneous rocks |
>200MPa |
Characteristics
1. The strength and wear resistance of inserts are improve by using carbide inserts with high strength and high wear resistance.
2. Surface of the high precision bearing heat treated by using advanced heat treatment process to improve the load capacity and service life of the bearing.
3. The service life of the bearing is further extended by adopting harder and more wear resistant material for thrust bearing.
4. This series oil well rock bit use sealed roller bearing structure. With rollers arranged in grooves recessed in the cone body, the size of the bearing journal is increased.
6. Thrust bearing surfaces are hard faced and treated with friction reducing technology.
7. Rotary drill bits use journal bearing. Hard faced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. The load capacity and seizure resistance of the bearing is greatly improve.
Product Show
FAQ
Q: Are you original manufacturer?
A: Yes, we JCDRILL is a official leading manufacture in drilling machinery in China and we have the whole series products you need.
Q: Which payment terms are available to us?
A: T/T term or L/C term. On T/T term, 30% down payment is required in advance, and 70% balance shall be settled before shipment.On L/C term, a 100% irrevocable L/C without "soft clauses" can be accepted.
Q: How long will the delivery time take?
A: Normally mud pump products will take about 3-15 days to produce the ordered machines. Most of the time, we can have an immediate delivery of our regular machines in 15 days.
Q: How about after sales service?
A: 365×24 Year-round Service We are committed to year-round 24-hour service even during holidays, in line with our policy of always providing "a response within 15 minutes and job completion within 24 hours."
Q:Spare Parts When You Need Them
A:We have spare parts centers across continents that stock specialist spare parts. We promise that spare parts will be delivered within 72 hours or no more than one week.
Guidance of Tricone Bit Choice
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