LW steel tooth bits
Cutting Structure
The wear-resistance of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces.
Bearing Structure
Non-scaled roller bearing .Drilling fluid can enter the bearing directly for cooling .Balls lock the cone,Which reduces the probability of cone-dropping to the minimum.
Product Application
It is suitable for shallow well,water well and geothermal well.
| IADC | WOB(kN/mm)(Bit dia) | RPM(R/min) | Applicable Fommations |
| 111 | 0.3--0.75 | 200---80 | Very soft formations with low compressive strength and high drillability .such as clay .mudstone ,chalk etc. |
| 121 | 0.3--0.85 | 200---80 | Soft formations with low compressive strength and high drillability,such as mudstone,gypsum,salt,soft shale,soft limestone,etc. |
| 131 | 0.3--0.95 | 180---80 | Soft to medium soft formations with low compressive strength and high drillability, such as medium soft shale,hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbeds ,etc. |
| 211 | 0.35--0.95 | 180---80 | Medium formations with high compressive strength ,such as medium foft shale, hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbeds,etc. |
| 241 | 0.35--0.95 | 180---70 | Medium hard formations with high compressive strength ,such as abrasive shale ,limestone, sandstone, dolomite, hard gypsum marble etc. |
| 321 | 0.4--1.0 | 150---70 | Hard and semi-abrasive formations with high compressive strength ,such as abrasive shale ,limestone, sandstone, dolomite, hard gypsum ,marble etc. |
Note :The upper limits of WOB and RPM in above table should not be used simultaneously
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