Five Blades PDC Drill Bits
Bit size:8.5”(215.9mm)
Number of blade: 5
Number of nozzle: 7
PDC cutter size:13mm/16mm
Total number of PDC cutters : 63
Height of bit:280mm
Gauge length: 62mm
API Connection: 4 -1/2 REG.PIN
Net weight: 45KGS
- Product Description
Five Blades PDC Drill Bits for Enhanced Rock Drilling Efficiency and Operational Stability
SHAANXI HAINAISEN INTELLIGENT EQUIPMENT MANUFACTURING CO., LTD brings over a decade of specialized drilling technology expertise to deliver Five Blades PDC Drill Bits engineered for superior performance across diverse geological formations. With a confirmed gage length of 62mm and a total weight of 45KGS, our IADC S223 certified 8.5" (215.9mm) PDC Drill Bits offer outstanding drilling efficiency thanks to the strategic placement of 63 premium polycrystalline diamond compact cutters over five precisely machined blades. These bits, which are produced in our 6,000-square-meter facility by a group of more than 20 senior specialists, include superior hydraulic optimization thru seven carefully positioned nozzles, guaranteeing the best cutting removal and a longer operational lifespan in difficult drilling conditions.
Superior Five-Blade Architecture for Maximum Drilling Performance
An important development in drill bit engineering is the five-blade arrangement. By distributing cutting forces uniformly throughout the bit face, this design maximizes rock contact area while significantly lowering stress concentration on individual cutters.
Improved stability and less vibration are advantages for your drilling operations. Straighter boreholes and better directional control are the results of the balanced geometry's reduction of lateral displacement during rotation.
Optimal trash slots are created between each blade by the thoughtful placement of the blades. Because of the improved hydraulic flow made possible by these expanded routes, bit balling in sticky formations is avoided and rock cuttings are effectively removed from the borehole.
Why Choose Our Five Blades PDC Drill Bits?
- Enhanced durability and wear resistance
- Improved cutting efficiency and penetration rates
- Optimized hydraulics for better cuttings removal
- Reduced vibration for smoother drilling operations
- Longer bit life, reducing costly trips and downtime



Operating Parameters
| Parameter | Range |
|---|---|
| Speed (R/min) | 60-250 |
| Drilling Pressure (KN) | 10-100 |
| Flow Rate (LPS) | 25-36 |
| Applicable Strata | Medium hardness, low compressive strength (e.g., shale, limestone, sandstone, gypsum) |
PDC Bit Selection Guide
Hardness | Low haedness | Medium haedness | High haedness |
Compressive Strength | 0-8000 | 8000-16000 | 16000-32000 |
Formation | Clay,mudstone,marl,rock salt,shale | Shale,sandstone,chalk | Sandstone,limestone,shale anhydrite,dolomite |
Density of Teeth | low | medium | high |
Cutter Size | 19mm | 16-19mm | 13-16mm |
Rear Elevation Angle of the Cutter | 15°/18°/20° | 17°/20°/25° | 20°/25°/30° |
Crown Structure | long profile | medium profile | short profile |
Advanced PDC Cutter Technology
Our bits utilize premium polycrystalline diamond compact cutters in 13mm and 16mm sizes. These synthetic diamond materials provide exceptional hardness, enabling continuous shearing action rather than impact crushing.
The self-sharpening mechanism inherent in PDC technology maintains consistent cutting efficiency throughout the bit's service life. This characteristic significantly extends intervals between bit replacements, reducing costly tripping operations.
Heat dissipation is optimized through cutter placement and hydraulic design. Proper cooling prevents thermal degradation, preserving cutter integrity even during high-speed operations in abrasive strata.
Versatile Application Across Formation Types
Five Blades PDC Drill Bits demonstrate exceptional adaptability across varying rock hardness levels. From soft sedimentary layers to medium-hard interbedded formations, these bits maintain consistent performance.
Your operations gain flexibility in well planning. The versatility reduces the need for multiple bit changes during single-well campaigns, streamlining logistics and minimizing downtime.
The robust construction withstands high-impact conditions. Reinforced blade geometry and strategic cutter placement provide resistance to shock loads encountered in heterogeneous formations.



Optimized Hydraulics for Enhanced Cuttings Evacuation
Our seven-nozzle configuration delivers precision-targeted fluid flow. Each nozzle position is calculated to maximize cleaning efficiency while maintaining optimal pressure distribution.
The enlarged junk slots work synergistically with nozzle placement. This combination prevents cuttings recirculation, which can cause premature wear and reduced penetration rates.
Improved hydraulics translate to higher rates of penetration. Clean bit faces maintain full cutter engagement with fresh formation, maximizing drilling efficiency throughout each run.

Manufacturing Excellence and Quality Assurance
Produced in our Xi'an facility with CNY 50 million in total investment, each Five Blades PDC Drill Bits undergoes rigorous quality control. Our 150+ employee workforce maintains strict manufacturing standards.
Advanced metallurgical processes ensure consistent steel body properties. Precision machining guarantees dimensional accuracy critical for API 4-1/2 REG.PIN connection integrity.
Our independent R&D capabilities drive continuous product improvement. Over ten years of PDC cutting technology experience informs every design refinement.

Project Case Studies
A coal mining operation in Shanxi Province utilized our Five Blades PDC Drill Bits for exploration drilling through interbedded sandstone and mudstone formations. The bits achieved 23% higher penetration rates compared to previous three-blade designs, completing 15 wells with only two bit changes versus the historical average of five changes per campaign.
In geothermal drilling applications in Shaanxi Province, our bits demonstrated exceptional durability in abrasive formations. One bit drilled continuously for 287 meters before planned replacement, maintaining consistent ROP throughout the run despite encountering variable hardness layers.

Packaging and Transportation
Our products are securely packaged to ensure safe transportation:
- Robust wooden crates or metal boxes
- Custom foam inserts for added protection
- Proper labeling and documentation for easy handling

Transaction Feedback
We value customer feedback and continuously strive to improve our products and services. Share your experience with us and help us serve you better.

After Sales Service
Our commitment doesn't end with the sale. We offer comprehensive after-sales support:
- Technical assistance and troubleshooting
- Maintenance guidance and best practices
- Performance analysis and optimization recommendations
Qualification Certification
SHAANXI HAINAISEN holds various industry Certifications, demonstrating our commitment to quality and excellence in manufacturing products.

FAQ
Q1: What formations are Blades PDC Drill Bits best suited for?
A: These bits excel in soft to medium-hard formations including sandstone, shale, limestone, and interbedded layers. The balanced blade design handles heterogeneous geology effectively while maintaining stability.
Q2: How does the five-blade design improve bit lifespan?
A: Force distribution across five blades reduces wear on individual cutters. Each cutter experiences lower stress concentrations, extending operational life and reducing replacement frequency.
Q3: What advantages do 63 PDC cutters provide?
A: Higher cutter counts increase rock contact area and cutting efficiency. More cutters also provide redundancy—if individual cutters experience minor damage, overall bit performance remains stable.
Q4: Can these bits be used in directional drilling?
A: Yes, the gauge length of 62mm and balanced geometry provide excellent directional control. Reduced vibration characteristics make them suitable for both vertical and directional applications.
Q5: What maintenance is required between runs?
A: Inspect cutters for damage, clean nozzles thoroughly, and verify connection threads. Proper cleaning and inspection extend bit life and ensure optimal performance on subsequent runs.
Contact Us
For inquiries or to place an order for our Five Blades PDC Drill Bits, please email us at hainaisen@hnsdrillbit.com.
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