Three-Cone Tungsten Carbide Insert (TCI) Bit (Specialized for High WOB Drilling in All Formations)
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. Capable of withstanding high weight on bit (WOB) at conventional rotation speeds, this bit comprehensively adapts to soft, medium, and hard formations through combinations of different insert types, counts, and exposure heights. 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. Can flexibly combine insert types, counts, and exposure heights according to formation characteristics, achieving efficient rock breaking in soft, medium, 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.
All-Formation Adaptation · High WOB Compatibility
Can flexibly adjust insert types, counts, and exposure heights according to different formation characteristics, adapting to soft, medium, and hard formations. Capable of withstanding high WOB at conventional rotation speeds, balancing drilling efficiency and stability. An ideal universal solution for deep hole drilling across all formations.
Applications
Suitable Formations
Adaptable to soft, medium, and hard formations (such as mudstone, sandstone, limestone, granite, etc.), achieving targeted rock breaking through insert configuration adjustments:
Soft Formations
Mudstone, soil layers
High exposure, sparse insert configuration, focusing on cutting efficiency
Medium-Hard Formations
Sandstone, limestone
Medium exposure, medium-density insert configuration, balancing efficiency and wear resistance
Hard Formations
Granite, basalt
Low exposure, dense insert configuration, focusing on wear and 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. Adjust weight on bit and rotation speed according to formation characteristics 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 Codes
(Adapted for specific formations and drilling conditions)
Customization Services
Can customize insert types, counts, exposure heights, and gauge protection structures according to specific formation requirements (soft/medium/hard formations). 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.
Explore Our Full Range of Drilling Tools
From surface to downhole, we offer a complete lineup of high-performance drill bits and accessories engineered for every formation and application.
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Drilling Rigs and Accessories
Complete drilling systems and support equipment.
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