Henan Rancheng Machinery Co., Ltd.
Henan Rancheng Machinery Co., Ltd.
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Whole Sale Max 17 Inch Steel Gear Tricone Drill Bit For Drilling Rig
Product Description
Advantage
Bearing Structure
High precision journal bearing with two thrust faces. Ball locked cone. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved, and suitable for high rotary speed.
Cutting Structure
Reinforcing the comprehensive mechanical properties of cutting tooth by using high quality tungsten carbide inserts of new formula and new techniques of insert bit. Widened crest insert improved the bit aggressivity and penetration rate.
Gauge Structure
The multiple heel position with gauge trimmer on the heel, tungsten carbide and hardfacing on the shirttail, strengthened spear point will enhance the gauge protection.
Product Specifications
| 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 limestone, 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 formations 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 and 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, medium soft limestone, medium soft sandstone, medium formation with harder and abrasives interbeds. etc. |
| 617 627 | 0.45~1.1 | 190~50 | Medium-hard formations with high compressive strength such as hard shale, limestone, sandstone, dolomite, etc. |
| 637 | 0.5~1.2 | 180~40 | Hard formations with high compressive strength, such as sandstone, limestone, dolomite, hard gypsum, marble, etc. |
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