Case Study: 6-1/2" SD6433 Drill Bit Delivers High Efficiency in Taiyuan Formation

March 20, 2026
ParameterDetails
Bit Size & Model6-1/2" SD6433
Bit Serial Number2516
Well Team40607
Well NameSu 25-13-13X
Target FormationTaiyuan
Drilling Interval2880 m – 3345 m
Interval Length465 m
Pure Drilling Time36 hours
Mechanical Drilling Rate (ROP)13 m/h

2. Performance Highlights

The 6-1/2" SD6433 drill bit from HNS Drillbit demonstrated exceptional drilling efficiency in the Taiyuan formation of well Su 25-13-13X. Operated by well team 40607, the bit completed a 465-meter interval (from 2880 m to 3345 m) in just 36 hours of pure drilling time, achieving an outstanding 13 m/h average ROP.

This performance significantly outperformed conventional drill bits in the same formation, reducing the total drilling time for the interval and minimizing trip operations. The SD6433’s optimized cutter layout and wear-resistant design ensured consistent penetration rates and prolonged bit durability, even in the abrasive Taiyuan formation conditions.

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3. Key Benefits

  • High ROP: 13 m/h average rate of penetration, drastically cutting drilling cycle time.
  • Efficient Interval Completion: 465 m drilled in a single run, reducing wellsite operational costs.
  • Durable Design: Maintained stable performance throughout the entire interval, validating the bit’s wear resistance in challenging formations.

4. Conclusion

This field application confirms that HNS Drillbit’s 6-1/2" SD6433 bit is a reliable solution for high-efficiency drilling in the Taiyuan formation. Its ability to deliver fast penetration rates and long service life makes it an ideal choice for operators aiming to improve well productivity and reduce overall drilling expenses.

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