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Product name
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8 1/2" S537G tricone drill bit original CS brand of tungsten carbide drill rock bit for oil well drilling
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Size
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8 1/2inch,215.9mm
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type
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tungsten carbide rock drill bit
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Bearing type
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rubber sealed journal bearing
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thread
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4 1/2" API Reg pin
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Gauge protection
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gauge protection
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WOB
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0.35~1.05KN/mm
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RPM
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80~400r/min
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Application formation
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medium hard with high compressive strength and thick&hard stringers,such as hard hale,limestone,sandstone and dolomite,etc.
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Weight
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42kg
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Industrial standard
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SY/T5164
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MOQ
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1
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| Recommended Drilling Parameters | |||
| IADC | WOB(kn/mm) | RRM(r/min) | Applicable Formations |
| 116 117 | 0.35~0.8 | 150~80 | Very soft formations with low compressive strength and high drillability.such as clay,mudstone,chalk,etc. |
| 126 127 | 0.35~0.9 | 150~70 | Soft formations with low compressive strength and high drillability,such as mudstone,gypsum,salt,salt,soft shale,soft limstone,etc. |
| 136 137 | 0.35~1.0 | 120~60 | Soft to medium soft formations with low compressive strength and high drillability,such as medium soft shale,hard gypsum,medium soft limestone,medium soft sandstone,soft formation with harder interbeds,etc. |
| 216 217 | 0.4~1.0 | 100~60 | Medium hard formations with high compressive strength,such as medium soft shale,hard gypsum,medium soft limestone,medium soft sandstone,soft for mations with harder interbeds etc. |
| 246 247 | 0.4~1.0 | 80~50 | Medium hard formations with high compressive strength,such as abrasive shale,limestone,sandstone,dolomite,hadr gypsum,marble,etc. |
| 417 437 447 | 0.35~0.9 | 150~70 | Very soft formations with low compressive strength and high drillability,such as clay,gypsum,salt,soft shale,soft limestone,etc. |
| 517 527 | 0.5~1.0 | 140~60 | Soft formations with low compressive strength ang high drillability such as mudstone,gypsum,salt,soft shale,soft limestone,etc. |
| 537 547 | 0.45~1.0 | 120~50 | Soft to medium formations with low compressive strength,such as medium soft shale,medium soft limestone,mediun soft limestone,medium soft sandstone,medium formation with harder and abrasiver interbeds.etc. |
| 617 627 | 0.45~1.1 | 90~50 | Medium hard formations with high compressive strength such as hadr shale,limestone,sandstone,dolomite,etc. |
| 637 | 0.5~1.2 | 80~40 | Hard formations with high compressive strength, such as sandstone,limestone,dolomite,hard gypsum,marble,etc. |
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