Customization: | Available |
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Customized: | Customized |
Standard: | API |
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BIT SPECIFICATIONS | ||
Diameter: | 8.5"(215.9mmmm) | |
Body Type : | Steel Body | |
Tooth Type: | TCI | |
Bearing : | Sealed Journal bearing | |
Seal Type: | Rubber seal | |
API Thread API Connection: | 3-1/2 API REG | |
IACD CODE : | 637 | |
OPERATION PARAMETERS | ||
Weight (KGS) | 42KGS | |
Flow Rate : | 11.35-15.8 LPS | 180-250 GPM |
Rotary Speed : | 80-DHM | |
Weight on Bit | 53-160KN | 11.91-35 KFT.LBS |
Make Up Torque | 9.5-12.2KN.M | 7-9 KFT.LBS |
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. |