311.1mm TCI Tricone Bit For Hard Rocks

Item No.: 0005635
Size: 12 1/4 Inch Tci Tricone Bit IADC Code: 637
Connection: 6 5/8"API Reg Pin Nozzle Qty: 3NZ
Rotary Speed(Rpm): 80-40 Bearing Type: Rubber Sealed Bearing
Machine Type: Water Well Drilling     Color: As Required
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Description Review
Description

Tungsten Carbide IADC637 311.1mm TCI Tricone Bit For Hard Rocks

Size: 12 1/4 Inch Tci Tricone Bit IADC Code: 637
Connection: Nozzle Qty: 3NZ
Rotary Speed(Rpm): 80-40 Bearing Type: Rubber Sealed Bearing
Machine Type: Water Well Drilling Color: As Required
High Light:

IADC Rock formation WOB (KN/mm) PRM(r/min)
417/427/437 Low compressive strength, high drill-ability and extremely soft formation, like shale, clay, sandstone,etc. 0.35~0.90 140~70
447 Low compressive strength, high drill-ability and soft formation, like shale, clay, sandstone, soft limestone, salt rock, plaster etc. 0.37~1.00 140~60
517 Low compressive strength, high drill-ability and soft formation, like shale, clay, sandstone, soft limestone, salt rock, etc. 0.37~1.05 120~50
527 Soft formation with low compressive, like Low compressive strength, high drill-ability and soft formation, like shale, clay, sandstone, soft limestone, salt rock, anhydrite etc. 0.35~1.05 120~50
537/547 Low compressive strength, medium hard formation with hard abrasive interlayer, like Hard shale, anhydrite, soft limestone, sandstone, dolomite with mezzanine, etc. 0.50~1.05 110~40
617/627 High compressive strength, medium hard and thick hard interlayer, like hard shale, limestone, sandstone, dolomite, etc. 0.50~1.05 80~40
637/737 High compressive strength, medium hard and high abrasive formation, like limestone, dolomite, sandstone, chert, etc. 0.7~1.20 70~40

 

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