Three-Cone Tungsten Carbide Insert (TCI) Bit (IADC 417/427/437 All-Formation Adaptable)
The Three-Cone Tungsten Carbide Insert (TCI) Bit utilizes premium tungsten carbide inserts with new formulations and manufacturing processes, combined with multi-gauge protection, high-precision sealed bearings, and professional lubrication systems. Covering the complete IADC 417/427/437 series insert configurations, this bit can withstand high weight on bit (WOB) at conventional rotation speeds, precisely adapting to soft, medium-hard, and hard formations. Widely used in petroleum exploration, water well drilling, geothermal development, mining, and other deep hole drilling applications, it is a reliable choice for efficient and stable drilling across all formations.
Extensively applied in petroleum exploration deep hole drilling, water well drilling completion, shallow geothermal drilling, mining deep hole blast hole drilling, geological exploration deep hole sampling, and various deep hole foundation engineering drilling.
Core Advantages
Premium Tungsten Carbide Inserts · Powerful Cutting Performance
Utilizes premium tungsten carbide inserts with new formulations and manufacturing processes, comprehensively enhancing insert hardness, toughness, and wear resistance with excellent comprehensive mechanical properties. Combined with IADC 417/427/437 series insert configurations, can flexibly select corresponding models according to formation characteristics, achieving efficient rock breaking in soft, medium-hard, and hard formations with stable and reliable drilling efficiency.
Multi-Gauge Protection Structure · Long-Lasting Hole Accuracy
Features multi-gauge protection design: outer row cone teeth with gauge trimming inserts, tungsten carbide inserts on cone back legs, and wear-resistant alloy hardfacing on leg tips and front sides. Comprehensive gauge protection effectively maintains hole diameter accuracy, reduces borehole wall wear and deviation risks, ensuring more stable hole quality and adapting to long-duration deep hole drilling requirements.
High-Precision Bearing Structure · Durable & Anti-Galling
Incorporates high-precision radial sliding and axial thrust bearings with steel ball locking structure ensuring bearing stability. Leg journals are welded with wear-resistant alloy, and cone bores are welded with special alloy and silver-plated, significantly enhancing bearing wear resistance and anti-galling capability. Capable of withstanding high WOB loads, extending bearing service life.
High-Performance Sealed Lubrication System · Ensures Long-Term Stability
Utilizes high-performance sealing rings combined with optimal seal compression and arc-shaped sealing structure, effectively improving bearing sealing performance and preventing mud and cuttings intrusion. Employs high-performance specialized bit lubricating grease, ensuring adequate bearing lubrication and low friction loss, adapting to long-duration high-load drilling operations.
IADC Full Series Coverage · Precise Adaptation to All Formations
Provides complete IADC 417/427/437 series insert configurations, specifically matching different formation characteristics: IADC 417 for soft formations with high-exposure sparse inserts focusing on cutting efficiency; IADC 427 for medium-hard formations with medium-exposure medium-density inserts balancing efficiency and wear resistance; IADC 437 for hard formations with low-exposure dense inserts focusing on wear and impact resistance. Achieves precise adaptation from soft to hard formations without changing bit types, handling complex geological conditions.
Applications
Suitable Formations
Through IADC 417/427/437 series insert configurations, comprehensively adapts to soft, medium-hard, and hard formations:
Soft Formations
Mudstone, soil layers, soft shale
F≤4
High-exposure sparse inserts, focusing on cutting efficiency
Medium-Hard Formations
Sandstone, limestone, medium-hard shale
4＜F≤8
Medium-exposure medium-density inserts, balancing efficiency & wear resistance
Hard Formations
Granite, basalt, dolomite
8＜F≤11
Low-exposure dense inserts, focusing on wear & impact resistance
Not recommended for highly abrasive, extremely fractured ultra-complex formations (requires special customization).
Drilling Method
Rotary Drilling (Conventional RPM, High WOB Compatible)
Recommended to use mud circulation or high-pressure clean water circulation to ensure adequate bit cooling and efficient cuttings removal. According to the formation characteristics corresponding to the selected IADC model, adjust weight on bit and rotation speed to fully utilize bearing and sealing system performance, extending bit service life.
Product Specifications
I. Standard Bit Sizes (Inches / Millimeters)
| Inch Size | Millimeter Size | Inch Size | Millimeter Size |
|---|---|---|---|
| 5-5/8″ | 143mm | 9-5/8″ | 244mm |
| 5-7/8″ | 149mm | 9-7/8″ | 251mm |
| 7-5/8″ | 194mm | 10-5/8″ | 270mm |
| 7-7/8″ | 200mm | 11-5/8″ | 295mm |
| 8-1/2″ | 216mm | 12-1/4″ | 311mm |
| 9-1/2″ | 241mm | 13-5/8″ | 346mm |
| — | — | 14-3/4″ | 375mm |
II. IADC Models
(Adapted for soft, medium-hard, and hard formations respectively)
Customization Services
Can customize IADC insert types, counts, exposure heights, and gauge protection structures according to specific formation requirements. Custom non-standard sizes and special thread types available to adapt to different drill rig models. Can optimize bearing and sealing systems to enhance durability under special conditions (such as high temperature, highly abrasive formations).
Our Manufacturing Excellence
From precision machining to final assembly — every drill bit is crafted in our ISO 9001 certified facility.
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