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Well Drilling Parts API Diamond Drill Bit PDC Rock Bit 8-1/2''
Features:
The cutting blade is named diamond bit, integrative drilling bit. and no movement spare-parts on it, simple construction, ability to high strength, wear-resisting, anti-impact, it is the one of new drilling technology in the world in 80's of the 20th century ,the site operations demonstrate that there are so many advantage when diamond bit was drilling ,such as drilling fast, drilling depth, long life, steadily, lower downhole problems, good wellbore quality, not only long service life but also refusing, can save drilling cost.
| 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,sandstoneand 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. | |||
Packaging
After Sales Warranty
. Sizes: 3 7/8’’ to 36’’is available.
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.
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