TCI Tricone Bit
Keywords：
Tricone bit
Classification：
ProductDetail
Introduction
2. Application: Suitable for oil, natural gas, geothermal industrial and water well drilling, HDD projects, etc.
3. Cutting structure:Reinforcing the comprehensive mechanical properties of cutting tooth by using high quality tungsten carbide inserts of new formula and new techniques of insert bit. Unique widened crest insert improved the bit aggressivity and penetration rate.
4. Gauge protection structure:The multiple heel position with gauge trimmer on the heel, tungsten carbide and hardfacing on the shirttail, strengthened spear point will enhance the gauge protection.
5. Bearing structure: High precision journal bearing with two thrust faces. Ball locked cone. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved, and suitable for high rotary speed.
Selection guide
| IADC | WOB kN/mm |
RPM (r/min) |
Suitable formation |
| 417 | 0.35~0.90 | 140~70 |
Very soft with low compressive strength and high drillability,such as shale,clay,sandstone and conglomerate,etc. |
| 437 | 0.35~0.95 | 140~60 |
Very soft with low compressive strength and high drillability,such as shale,clay,sandstone and conglomerate,etc. |
| 517 | 0.35~1.05 | 120~50 |
Soft with low compressive strength and high drillability,such as shale,clay,sandstone and soft limestone,etc. |
| 537 | 0.35~1.05 | 110~40 |
Medium soft with low compressive strength and harder abrasive stringers,such as hard shale,hard gypsolyte,soft limestone,sandstone and dolomite with stringers,etc. |
| 617 | 0.35~1.05 | 80~40 |
Medium hard with high compressive strength and thick&hard stringers,such as hard shale,limestone, sandstone and dolomite,etc. |
| 637 | 0.70~1.20 | 70~40 |
Medium hard with high compressive strength and high abrasiveness,such as limestone,dolomite, sandstone and chert.ect. |
| Note:The upper limits of WOB and RPM in above table should not be used simultaneously. | |||
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