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After-sales Service: | 4 Years |
Warranty: | 4 Years |
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Size Range: 200-1800mm Size: 14'' (350mm) Roller Cone Matched: 3x8.5'' Type: TCI, IADC537 Formation: Soft to Medium hard Rocks Enhanced Gauge Protection Wear Resistance Package: Wooden Box or Steel Pallet Application: Vertical and Horizontal Drilling |
IADC
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WOB(KN/mm Bit Dia.)
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RPM(r/min)
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Applicable Formations
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435 515 |
0.20~0.70
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200~80
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Soft with very low compressive strength such as shale ,clay, sandstone ,soft limestone ,etc
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535
|
0.35~0.80
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200~80
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Medium soft with low compressive strength and harder abrasive stringers ,such as hard shale ,hared gypsolyte, soft limestone, sandstone and dolomite with stringer ,etc |
417 437 |
0.35~0.90
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140~70
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Very soft with low compressive strength and high drillability, such as shale, clay, sandstone and conglomerate ,etc.
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517 527 |
0.35~1.05
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120~50
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Soft with low compressive strength, such as shale, clay, sandstone, soft limestone, salt bed and hard gypsolyte, etc
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537 547 |
0.35~1.05
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110~40
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Medium soft with low compressive strength and harder abrasive stringers, such as hard shale, hard gypsolyte, soft limestone, sandstone and dolomite with stringers ,etc |
617 627 |
0.35~1.05
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80~40
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Medium hard with high compressive strength and thick &hard stringers, such as hard shale, limestone, sandstone and dolomite, etc
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637 737 |
0.70~1.20
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70~40
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Medium hard with high compressive strength and high abrasiveness ,such as limestone ,dolomite, sandstone and chert ,etc
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Note: The upper limits of WOB and RPM in above table should not be used simultaneously
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