+86 10 8467 3566
+86 10 8467 3566
IADC CODE:117 127 217
>> Application
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.
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PRODUCT DESCRIPTION
>> Characteristics
>> The strength and wear resistance of inserts are improve by using carbide inserts with high strength and high wear resistance.
>> 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.
>> The service life of the bearing is further extended by adopting harder and more wear resistant material for thrust bearing.
>> 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.
>> Thrust bearing surfaces are hard faced and treated with friction reducing technology.
>> 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.
>> Specification
ROLLER CONE BITS(IADC) | ROLLER CONE(m/h) | FORMATION HARDNESS | FORMATION | ROCK TYPE | COMPRES SSTRENGTH | |
| 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 compressive strength 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 compressive strength 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 compressive strength and 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 |
>> Project
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