| Customized: | Customized |
|---|---|
| Standard: | AISI, API |
| Type: | Center Drill Bit |
| Material: | High Carbon Steel |
| Usage: | Well Drilling |
| Machine Type: | Drilling Tool |
| Samples: |
|---|
| Customization: |
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Basial Specification
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| IADC Code |
117,127,126,217 417,437,517,537 617,627,637,737 |
| Bit Size |
7 1/2'',8 1/2'' 9 7/8'',12 1/4'', 13 5/8" 17.5" |
| Tooth Type | wide teeth,chisel insert |
| Bit Weight | 18kg |
| Meterial | tungsten carbide insert,inlaid friction-reducing alloy |
| Bearing |
Metal sealed bearing Rubber sealed bearing |
| Lubrication and seal | Adopt advanced grease |
| Pressure control system | The advanced compensator |
| Thrust faces | Hardfaced with wear resistant alloy |
| Nozzles | Three nozles,Center nozzle can be customized |
| Gauge protection | On the Shirttail:More carbide inserts increase gauge holding capability and bearing life |
| Recommended Drilling Parameters | |||
| IADC | WOB(kn/mm) | RPM(r/min) | Formations |
| 117 | 0.30-0.753 | 180-60 | very soft formation with low compressive strenght and high drillability,such as caly,mudstone,chalk,etc. |
| 127 | 0.30-0.85 | 180-60 | soft formation with low compressive strength and high drillability,such as mudstone,gypsum,soft limestone,etc. |
| 217 | 0.35-0.95 | 150-60 | soft to medium hard formations with high compressive strength,such as medium soft shale,sandstone,limestone,etc. |
| 437 | 0.35-0.9 | 240-70 | soft formation with low compressive strenght and high drillability,such as caly,mudstone,chalk,soft limestone,etc. |
| 517 | 0.35-1.0 | 140-60 | medium soft formation with low compressive strength and high drillability,such as mudstone,sandstone,shale,etc. |
| 537 | 0.45-1.0 | 120-50 | medium soft to medium hard formation with low compressive strength,such as medium shale,sandstone,medium limestone,etc. |
| 617 | 0.45-1.1 | 90-50 | medium hard to hard formation witj high compressive strength,such as hard shale,limestone,dolomite,etc. |
| 637 | 0.5-1.2 | 80-40 | hard to very hard formation with high compressive strength,such as hard limestone,dolomite,marble,etc. |
| NOTE the upper limits of WOB and RPM in above table should not be used simultaneously | |||
Countries that our company have already exported:United States, Australia, Costa Rica, Guatemala, Azerbaijan, Congo, Myanmar, Peru, Singapore, Oman, Indonesia, Philippines, India, Switzerland, Ukraine, Turkey, Bolivia, Romania, Kenya, Vietnam, South Africa, Kuwait, Mozambique, Ecuador, France.
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