The hot sell tricone roller bits
Product Description
| IADC code | Applicable Formation | Main characteristics of the bit | Recommended parameters | |
| Cutting structure | Normal WOB kN/mm (bit dia.) | Rotary speed (rpm) | ||
| 117 | Very soft with low compressive strength and high drillability,such as soft shale ,clay and salt bed,etc | Hardfaced gage and all tooth surfaces,,the gage fitted with compacts for enhanced gage protection ,and a row of trimmers is added between gage row and heel row | 0.30~0.9. | 300~80 |
| 127 /137 | Soft with low compressive strength and high drillability,such as sale ,clay,salt bed and soft limestone,etc | Hardfaced gage and all tooth surfaces,,the gage fitted with compacts for enhanced gage protection ,and a row of trimmers is added between gage row and heel row | 0.30~0.9. | 300~80 |
| 427 / 437 | Very soft formations with low compressive strength and high drillability,such as clay,mudstone,chalk,gypsum,salt,soft limestone, etc. | Large dia. Offset crested.scoop compacts in inner row,wedge compacts in outer row ,high compact exposure, inequable spaced compacts arrangement,and a row of trimmers is added between gage row and heel row | 0.35~0.90 | 280~70 |
| 447 / 517 / 527 | Soft formations with low compressive strength and high drillability,such as mudstone,gypsum,salt,soft limestone, etc. | Large dia. Offset crested.scoop compacts in inner row,wedge compacts in outer row ,high compact exposure, inequable spaced compacts arrangement,and a row of trimmers is added between gage row and heel row | 0.35~1.05 | 240~50 |
| 537 /547 | Medium soft with low compressive strength and harder abrasive stringers,such as hard shale,mudstone ,soft limestone and sandstone,etc | Large radius scoop compacts in inner row,wedge compacts in outer row, inequable spaced compacts arrangement ,and a row of trimmers is added between gage row and heel row | 0.50~1.05 | 220~40 |
| 617 /627 /637 | Medium hard with compressive strength and thick and hard stringers ,such as limestone ,hard shale,mudstone and sandstone,etc. | Conical compacts in inner row,spherical compacts in outer row,and a row of trimmers is added between gage row and heel row | 0.50~1.10 | 220~40 |
| 737 | Hard formation with high abrasiveness ,such as hard limestone, dolomite, hard sandstone and chert,etc | Large radius conical compacts in inner row , spherical compacts in outer row , and a row of trimmers is added between gage row and heel row. | 0.50~1.20 | 200~40
|
Previous：No
Payment Terms︰ T/T
Lead Time︰ 5days after got payment
Standards Certificate︰ ISO9001
Product Image
