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Product Details:
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| High Light: | rock drill bit,Manufacturer |
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|---|---|---|---|
1.3 3-8 IADC 537 Tungsten Carbide Insert Bit
•Surface of cone back and cutters are hard enhanced by high wear resistance tungsten carbide,
largely increasethe work life of bit.
•Optimal cutter rows ,cutter quantity,cutter length,and cutter structure design largely improve the
drilling capability and speed.
•Widely used in oil exloration,mining prospecting,subterranean heat,hydrology etc.
2.Manual of Cone Bit Purchase
| Roller cone bit(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 layerand low compressive strength | clay/slits/sands | <25MPa |
| 116/137 437 | 9-15 | 18-33 | soft | soft formation with low compressive strength and high drill ability | claystone/marl/lignite sangstone/tuff | 25-50MPa |
| 126/139 517/527 | 4.5-9 | 6-12 | medium soft | soft to medium formation with low compressiv estrength and small abrasive layers | claystone/marl/lignite/tuff sangstone/silts/anhydrites | 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 anhydrites sandstone(calcareous) | 75-100MPa |
| 211/236 537/617 | 1.5-2.5 | 1.5-3 | medium hard | hard and dence formation with very high compressive strength but non abrasive | limestone/ anhydrites dolomite | 100-120MPa |
| 311/347 627/637 | 1-1.5 | 1-1.5 | hard | hard and dence 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 formation | quartzite/lgneous/rock | >200MPa |
