The description of the rotary rock tungsten carbide drilling bits.
The rotary rock tungsten carbide drilling bits are a type of drilling tool that is very popular for drilling a water well borehole, this drill bit is also called a tricone drilling bit or roller drilling bit, or milled tooth drilling bit. Rotary rock tungsten carbide drilling bits are tricone drilling bit that is covered with tungsten carbide on the rollers. The rotary rock tungsten carbide drilling bits can drill different earth formations according to the IADC code.
Rotary rock tungsten carbide drilling bits are usually used for drilling a water well, it works with a mud pump. You can choose the most suitable one according to the IADC CODE SELECTION below.
The specifications of rotary rock tungsten carbide drilling bits.
| IADC | WOB (KN/mm) | RPM (r/min) | Application |
| 111/114/115 | 0.3-0.75 | 200-80 | very soft formations with low compressive strength and high drill ability, like clay, mudstone, chalk |
| 116/117 | 0.35-0.8 | 150-80 | very soft formations with low compressive strength and high drill ability, like clay, mudstone, chalk |
| 121 124/125 | 0.3-0.85 | 200-80 180-60 | soft formations with low compressive strength and high drill ability, like mudstone, gypsum, salt, soft limestone |
| 131 136/137 | 0.3-0.95 0.35-1.0 | 180-80 120-60 | soft to medium formations with low compressive strength, like medium, soft shake, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds |
| 211/241 216/217 | 0.3-0.95 0.4-1.0 | 180-80 100-60 | medium formations with high compressive strength, like medium, soft shake, hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbeds. |
| 246/247 | 0.4-1.0 | 80-50 | medium hard formation with high compressive strength, like hard shale, limestone, sandstone, dolomite |
| 321 324 | 0.4-1.0 0.4-1.0 | 150-70 120-50 | medium abrasive formations, like abrasive shale, limestone, sandstone, dolomite, hard gypsum, marble |
| 437/447/435 | 0.35-0.9 | 240-70 | very soft formations with low compressive strength and high drill ability, like clay, mudstone, chalk, gypsum, salt, soft limestone |
| 517/527/515 | 0.35-1.0 | 220-60 | soft formations with low compressive strength and high drill ability, like mudstone, gypsum, salt, soft limestone |
| 537/547/535 | 0.45-1.0 | 220-50 | soft to medium formations with low compressive strength, like medium, soft shake, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds |
| 617/615 | 0.45-1.1 | 200-50 | medium hard formation with high compressive strength, like hard shale, limestone, sandstone, dolomite |
| 637/635 | 0.5-1.1 | 180-40 | hard formation with high compressive strength, like limestone, sandstone, dolomite, hard gypsum, marble |
| Model | rotary rock tungsten carbide drilling bits |
| IADC CODE | 417 437 517 537 617 637 737 827 |
| Available sizes (inch) | 3 1/2”~ 26” larger sizes can be custom according to your requirement. |
| API regular pin(inch) | 2 3/8;2 7/8;3 1/2;4 1/2;6 5/8;7 5/8 |
| Recommended torque(KN.M) | 4.1-4.7/6.1-7.5/9.5-12.2/16.3-12.7/38-43.4/46.1-54.2 |
| Advantage | competitive price and best quality. |
| Bearing type | sealed bearing and non-sealed bearing JM/JMT(metal sealed journal bearing) RM/RMT(metal sealed roller bearing) JR/JRT (rubber sealed journal bearing RR/RRT (rubber sealed roller bearing FR(rubber sealed floating bearing) |
| Formation | soft ,medium soft ,hard, medium hard, very hard formation |