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JianShi (China) Drilling Tools Co., Ltd.
4 Years
| Ask Lasest Price | |
| Brand Name : | JSBIT |
| Model Number : | 7 7/8inch 200mm |
| Certification : | API and ISO standard |
| Price : | bargain |
| Payment Terms : | Western Union, T/T |
| Supply Ability : | 500PCS /month |
| Delivery Time : | 1 days |
Factory Supply Directly 200mm IADC642 Air Bearing Type Tricone Rock Bit
JSBIT tricone bits factory offers all kinds of tricone drill bits. Tricone bits are available in new and used tricone bits , steel tooth and tungsten carbide insert, in sizes from 37/8" to 36", for use in all formations, with any bearing: seal type / air type , tricone bits apply to oil gas geothermy mining water HDD and foundation industry.
| IADC | Recommended parameters | Applicable strata | |
| WOB KN/mm | Rotating speed r/min | ||
| 116,117 | 0.35-0.8 | 150-80 | Extremely soft formations with high compressive strength and drillability, such as clay, mudstone, chalk |
| 126,127 | 0.35-0.9 | 150-70 | Soft formations with high compressive strength and drillability, such as mudstone, gypsum, salt rock, soft shale, soft limestone |
| 136,137 | 0.35-1.0 | 120-60 | Soft to medium-soft formations with high compressive strength and high drillability, such as medium-soft shale, anhydrite, medium-soft limestone, medium-soft sandstone and soft formations with hard interlayers |
| 216,217 | 0.4-1.0 | 100-60 | Soft to medium formations with compressive strength, such as soft shale, medium soft limestone, medium soft sandstone and soft formations with hard interlayers |
| 246,247 | 0.4-1.0 | 80-50 | Medium-hard formations with high compressive strength, such as hard shale, limestone, sandstone, dolomite |
| 417,437,447 | 0.35-0.9 | 150-70 | Very soft formations with high compressive strength and drillability, such as clay, mudstone, chalk, gypsum, salt rock, soft shale, soft limestone |
| 517,527 | 0.35-1.0 | 140-60 | Soft formations with high compressive strength, such as mudstone, gypsum, salt rock, soft shale, soft limestone |
| 537,547 | 0.45-1.0 | 120-50 | Soft to medium formations with compressive strength, such as medium-soft shale, medium-soft limestone, medium-soft sandstone and medium formations with effective hard abrasive interlayers |
| 617,627 | 0.45-1.1 | 90-50 | Medium-hard formations with high compressive strength, such as hard shale, limestone, sandstone, dolomite |
| 637 | 0.5-1.2 | 80-40 | Hard formations with high compressive strength, such as sandstone, limestone, dolomite and anhydrite, marble |
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