IADC Code | 437 |
---|---|
Type | TCI |
Number of cones | 3 |
Number of nozzles | 3 |
Bearing type | Rubber |
Seal type | Slide |
Center water hole | NO |
Tooth shape | Wedge |
Thread Connection | 3 1/2" API REG Pin |
Type of reinforcement | Alloy teeth |
Weight | 32Kg |
package | Wooden box |
Bit Pressure: | 0.4 ~ 0.65 KN |
---|---|
Rotary Speed: | 60 ~ 200 r/min |
Pumping Pressure: | 10 ~ 20 Mpa |
Sediment Concentration: | < 0.5% |
The above parameters are only for reference. Optimized parameters are determined by drilling process and lithology of formations on site.
tricone bit nozzle and assembled size | ||||
Bit diameter | Nozzle outer diameter | assembled length | Nozzle exit diameter (inner diameter) | |
in | mm | mm | mm | mm |
3 1/2~5 1/2 | 88.9~139.7 | 20.3 | 17.5 | 4~10 |
5 5/8~7 3/8 | 142.9~187.3 | 23.6 | 19.0 | 5~16 |
7 1/2~8 1/4 | 190.5~209.6 | 29.8 | 21.0 | 7~18 |
8 3/8~14 5/8 | 212.7~371.5 | 33.0 | 27.0 | 8~20 |
≥14 3/4 | ≥374.6 | 40.9 | 27.0 | 10~22 |
Note: the assembled lenght is length from nozzle inlet to retaining ring groove |
●Applicable formations:
●Sealed journal bearing
●Cutting structure
●Hardfacing on shirttail
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