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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. |
| Note: the upper limits of WOB and Rpm in above lable should bot used simulaneously | |||
Richdrill is a large-scale professional manufacturer of well drilling & mining blasting drilling tricone bits, PDC bits etc. The company has been committed to the professional production of drill bits for more than 20 years. Our products are sold to Vietnam, Thailand, Chile, Uzbekistan, Canada, Mexico, South Africa,Philippines,Malaysia, Colombia, Congo and other countries. Our factory has various types of drilling rigs to meet your needs. If you are interested in drilling bits, please contact us for a quote you are satisfied with.
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