200 Four-Blade PDC Bits (250mm) Achieve 1000m Lifespan in Coal Mine
How premium 1613 PDC cutters and a four-blade design increased ROP by 15–20% and reduced bit change frequency in complex coal seams.
In coal mine drilling, bit durability, rate of penetration (ROP), and service life are top priorities. Recently, a coal mining customer ordered 200 high-performance bits (250mm diameter) capable of stable operation in complex coal seams, with a guaranteed minimum drilling depth of 1000 meters per bit. This case study details how our four-blade PDC bit equipped with 1613 cutters met and even exceeded these expectations.
📋Customer Requirements
- Quantity: 200 pcs 250mm PDC bits
- Application: Coal mine drilling (soft to medium-hard interbedded formations)
- Service Life: Minimum 1000 meters per bit
- Special Requirements: High wear resistance, stable drilling, reduced change-out frequency
🔧Solution: Advantages of the Four-Blade PDC Bit
This four-blade PDC bit (250mm) equipped with 1613 polycrystalline diamond compact cutters is engineered specifically for coal mining environments. Key features include:
1613 PDC cutters offer high hardness to withstand soft to medium-hard coal measures rock, effectively extending bit life beyond 1000 meters.
The four-blade design ensures uniform load distribution, reduces vibration, and maintains borehole accuracy — critical in interbedded formations.
Optimized cutter layout and cutting angles boost ROP by 15–20%, shortening project timelines.
Designed for complex coal seams, these bits perform reliably in continuous operations, minimizing change-out frequency.
📈Implementation & Results
After deploying the 200 four-blade PDC bits (250mm) at the coal mine site, the following outcomes were recorded:
- ✅ Each bit consistently drilled 1000 meters, meeting the guaranteed lifespan.
- ✅ Drilling efficiency improved by 15% to 20%, significantly reducing overall project duration.
- ✅ Bit change frequency decreased, leading to lower operational costs and less downtime.
🗣️Customer Feedback
“The four-blade PDC bits exceeded our expectations—excellent wear resistance and consistent performance. They helped us significantly improve coal mining efficiency and reduce costs. This was a very satisfactory procurement experience.”
🚀Conclusion
This coal mine drilling case fully demonstrates our expertise in designing and manufacturing high-performance PDC bits. By combining premium 1613 cutters with a robust four-blade structure, we delivered a solution that not only met the 1000‑meter lifespan requirement but also boosted ROP by up to 20%. Whether for coal mining, water well drilling, or other geotechnical projects, our wear‑resistant drill bits provide efficient, durable, and stable performance for cost‑effective operations.
Keywords: PDC bit, four-blade PDC bit, coal mine drilling, 250mm PDC bit, wear-resistant drill bit, high ROP coal mining, PDC bit lifespan 1000m, 1613 PDC cutters.