| Product Specifications |
Diameter 12 1/4"(311.1mm) IADC417G Bearing Type Rubber Sealed Bearing Cutting Gear Type Tungsten Carbide Insert Drilling Circulation Type Mud Circulation Connection Thread Type 6 5/8 reg Male Gear Diameter Protection (Gage Protection) Yes Back Protection Yes |
| Operation Parameters | |
| Drilling Speed(r/min) | 150-70 |
| Drilling Pressure(KN) | 108-280 |
| Applicable Stratum | Extremely soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, mudstone, gypsum, salt rock, soft shale, soft limestone, etc. |