8½” TCI IADC 517

1. Product Overview

The 8½” TCI IADC 517 is a tricone roller-cone drill bit engineered for demanding oil, gas, mining, geothermal, and directional drilling applications. Its tungsten carbide insert (TCI) cutting structure is designed to deliver effective rock penetration across soft-to-medium formations, while the 517 IADC classification identifies a bit configuration suited to reliable drilling performance and controlled wear. The 8½-inch size is widely applicable to standard wellbore and drilling programs, offering a practical balance between penetration efficiency, durability, and operating cost. For professional drilling contractors and industrial buyers, it represents a dependable solution for high-volume formation drilling where performance consistency and sourcing reliability are critical.

2. Key Specifications & Technical Characteristics

• Product: 8½” TCI Tricone Roller-Cone Drill Bit
• IADC Classification: 517
• Bit Diameter: 8½ inches (approximately 215.9 mm)
• Bit Type: TCI roller-cone/tricone drill bit
• Cutting Structure: Tungsten carbide inserts engineered for formation penetration and wear resistance
• Cone Configuration: Three-cone rotary drilling design
• Primary Material Components: High-strength alloy steel body and cones with tungsten carbide insert cutting elements
• Formation Range: Primarily soft to medium formations, including formations requiring controlled penetration and abrasion resistance
• Physical Form: Complete rotary drilling bit with three rotating cones and integrated cutting structure
• Connection: Available with industry-standard threaded connections according to drilling-program requirements
• Bearing/Sealing System: Configuration may vary by manufacturer and specification; sealed-bearing designs can be supplied where required
• Manufacturing Grade: Industrial drilling grade; exact metallurgy, insert geometry, gauge protection, and bearing configuration should be confirmed against the required technical specification
• Packaging: Heavy-duty export packaging suitable for international transportation and handling
• Quality Documentation: Inspection reports, technical datasheets, certificates, and other documentation can be supplied subject to order requirements
• Shelf Life: Not normally restricted under appropriate dry, clean, and protected storage conditions

3. Core Industrial Applications

• Oil & Gas Drilling: Used for drilling well sections through soft-to-medium formations where dependable penetration and controlled bit wear are required.
• Mining & Exploration: Suitable for rotary drilling and exploration programs requiring robust carbide-insert cutting structures.
• Geothermal Drilling: Applicable to selected geothermal formations where durable roller-cone drilling technology is preferred.
• Water-Well Drilling: Can support large-diameter borehole drilling operations where an 8½-inch bit specification is appropriate.
• Directional & Industrial Drilling: Suitable for drilling contractors seeking a versatile tricone solution for demanding field conditions.

The TCI cutting structure provides greater resistance to mechanical wear than conventional steel-tooth configurations in many applications, while the three-cone design distributes cutting action across the formation. Proper selection of insert configuration, bearing system, hydraulics, weight-on-bit, and rotary speed helps optimize penetration rate, bit life, and overall drilling cost.

4. Competitive Advantages

• Quality Consistency: Precision-engineered cutting elements and robust alloy-steel construction support repeatable drilling performance.
• Reliable Supply: Suitable for planned procurement programs, replacement-bit requirements, and ongoing drilling campaigns.
• Operational Efficiency: TCI cutting elements are designed to maintain effective formation engagement while resisting wear.
• Cost Competitiveness: Provides a practical balance between acquisition cost, drilling performance, and expected service life.
• Heavy-Duty Construction: Designed for demanding rotary drilling environments with appropriate formation and operating parameters.
• International Logistics: Export-oriented packaging and supply coordination support global B2B procurement.
• Technical Documentation: Product specifications, inspection documentation, and quality certificates can be provided according to buyer and project requirements.
• Sourcing Flexibility: Suitable for drilling contractors, distributors, mining companies, energy operators, and industrial procurement teams requiring dependable replacement or project-specific drill bits.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20MT
• Loading Capacity: Approximately 20–25 MT per 20-foot container, subject to packaging configuration, bit dimensions, gross-weight restrictions, and applicable shipping requirements
• Supply: Bulk and project-based orders available
• Packaging: Export-grade heavy-duty packaging suitable for international shipment
• Documentation: Commercial invoice, packing list, technical documentation, and applicable quality certificates available subject to order requirements