Specifications about our tricone bit
TCI bits
1,Soft formations(417,437,517,537)
Features large chisel-shaped inserts to provide the highest penetration rate in the
softest formations such as shales, clays, limestone and sands.
2,Soft to medium formations(617,637)
Designed to drill effectively in formations such as hard limestone, dolomite, hard sands, and
other formations with hard cherty.
3,Medium to hard formations(737)
For extremely hard formations such as chert, granite, flint, and taconite. Features short,
closely-spaced inserts to ensure maximum penetration rate and wear resistance
Milled tooth bits
1,Soft formations(114-117)
These bits are designed to drill the softest formations such as soft shales,red beds, and clays,
with high durability and maximum penetration rates.
2,Soft to medium formations(121,124,126,134,136,137)
These bits are designed to drill formations such as shales, medium soft limestone, Medium
sandstone and other formations with intermittent hard streaks.
3,Medium to hard formations(213,214,215,217)
These bits are designed to drill formations such as hard sandstone, dolomite, and broken
formations with hard cherty streaks
Main features
1. Cutting Structure of this type sealed and non-sealed tci tricone bits :
The wear-resistance of teeth is enhanced with premium tungsten carbide hard facing on the tooth
surfaces for steel tooth bit.
2. Gauge Structure of this type tci tricone rock bits:
Multiple gauge protection with gauge trimmers on the heel and gauge inserts on the gauge
surface of the cone, tungsten carbide inserts and hard facing on the shirttail increases
gauge holding capability and bearing life.
3. Bearing Structure of this type tci tricone rock bits :
High precision roller bearing with two thrust faces. Ball locks the cone. Thrust faces hard face
with wear resistant alloy. Abrasion resistance and seizure resistance of the bearing are improved.
| IADC |
WOB (KN/mm) |
RPM (r/min) |
Applicable Formations |
| 114/116/117 | 0.3~0.75 | 180~60 | Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, etc. |
| 124/126/127 | 0.3~0.85 | 180~60 | Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft limestone, etc. |
| 134/135/136/137 | 0.3~0.95 | 150~60 | Soft to medium 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 interbed, etc. |
| 214/215/216/217 | 0.35~0.95 | 150~60 | Medium formations with high compress strength, such as medium soft shale, hard gypsum , medium soft limestone, medium soft sandstone, soft formation with harder interbed, etc. |
| 227 | 0.35~0.95 | 150~50 | Medium hard 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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| IADC |
WOB (KN/mm) |
RPM (r/min) |
Applicable Formations |
| 417/437/447/415/435 | 0.35~0.9 | 150~70 | 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 | 140~60 | Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft limestone, etc. |
| 537/547/535 | 0.45~1.0 | 120~50 | 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 | 90~50 | Medium hard formation with high compress strength, such as hard shale, limestone, sandstone, dolomite. etc |
| 637/635 | 0.5~1.2 | 80~40 | 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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