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6 1/4" Tricone Bit IADC535 for Water Well and Oil Field Rotary
ProDrill™ offers heavy duty Steel tricone drill bits to meet your customized needs. We have classified the bits based on their diameter (footprint), American Petroleum Industry number (API Number) and International Association of Drilling Contractor number (IADC number). The IADC number further classifies the tricone bits based on the tooth material of construction, suitability for drilling into soft, medium or hard rock and bearing type used. ProDrill™ manufactures tricone bits for all possible combinations of IADC numbers.
Tricone drill bits include Steel Teeth (or milled teeth) bits and Tungsten Carbide Insert (TCI) bits, TCI drilling bits are much more durable than Steel Teeth bits, but come with a higher cost to manufacture. Both these two groups of Tricone Bits are available with
(1) Open Bearing or Sealed Bearing
(2) Roller Bearing or Friction Bearing (Journal Bearing)
(3) Gage Protected or Non-Gage Protected, etc.
Tricone drill bits are widely used in mining, oil well, water well, thermal drilling.
| IADC | WOB (KN/mm) |
RPM (r/min) |
Applicable Formations |
| 437/447/435 | 0.35~0.9 | 240~70 | Very soft formations with low compressive strength and high drillability,such as clay,mudstone,chalk,gypsum,salt, soft limestone, etc. |
| 517/527/515 | 0.35~1.0 | 220~60 | Soft formations with low compressive strength and high drillability,such as mudstone,gypsum,salt,soft limestone, etc. |
| 537/547/535 | 0.45~1.0 | 220~50 | Soft to medium formations with low compressive strength, such as medium, soft shale, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds, etc. |
| 617/615 | 0.45~1.1 | 200~50 | Medium hard formation with high compress strength, such as hard shale, limestone, sandstone, dolomite. etc |
| 637/635 | 0.5~1.1 | 180~40 | Hard formations with high compressive strength, such as sandstone, limestone, dolomite ,hard gypsum, marble, etc. |
| Note: The upper limits of WOB and RPM in above table should not be used simultaneously. | |||
| IADC | WOB (KN/mm) |
RPM (r/min) |
Applicable Formations |
| 437/447/435 | 0.35~0.9 | 240~70 | Very soft formations with low compressive strength and high drillability,such as clay ,mudstone,chalk,gypsum,salt,soft limestone, etc. |
| 517/527/515 | 0.35~1.0 | 220~60 | Soft formations with low compressive strength and high drillability,such as mudstone,gypsum,salt,soft limestone, etc. |
| 537/547/535 | 0.45~1.0 | 220~50 | Soft to medium formations with low compressive strength, such as medium, soft shale, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds, etc. |
| 617/615 | 0.45~1.1 | 200~50 | Medium hard formation with high compress strength, such as hard shale, limestone, sandstone, dolomite. etc |
| 637/635 | 0.5~1.1 | 180~40 | Hard formations with high compressive strength, such as sandstone, limestone, 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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