苏 25-34-311X Well: 6-1/2" PDC Bit Performance Case Study
Company: Shaanxi Hainaisen Petroleum Technology Co., Ltd
Bit Model: 6-1/2" SD6533 PDC Bit
Field Application: Liujia Gou Formation, Jiangsu Oilfield
1. Project Overview
This case documents the field performance of the Hainaisen 6-1/2" SD6533 PDC bit deployed on the Su 25-34-311X horizontal well, operated by Team 50516. The target interval was the hard, abrasive Liujia Gou formation, known for its challenging lithology that typically causes high bit wear and low ROP.
The bit was run from 664 m to 2810 m, achieving exceptional drilling metrics that outperformed offset wells.
2. Drilling Performance Data
表格
| Parameter | Unit | Achieved Result |
|---|---|---|
| Total Footage Drilled | m | 2146 |
| Pure Drilling Time | hrs | 77 |
| Mechanical ROP | m/hr | 27.87 |
| Bit Serial Number | - | 2891 |
| Formation | - | Liujia Gou |
3. Performance Highlights
✅ Ultra-Long Single-Run Footage:The SD6533 bit drilled an outstanding 2146 meters in one run, eliminating multiple bit trips and significantly reducing rig non-productive time (NPT).
✅ Consistent High ROP in Hard Formations:Achieved a steady 27.87 m/hr mechanical ROP in the Liujia Gou formation, a rate that exceeds the average performance of competing bits in the same field by a wide margin.
✅ Superior Durability & Wear Resistance:Thanks to the premium PDC cutters and optimized bit body design, the bit maintained high penetration rates throughout the entire run, showing minimal wear upon tripping out.
4. Operator’s Field Feedback
“This 6-1/2" bit from Hainaisen was a game-changer for our Su 25-34-311X well. In the Liujia Gou formation, we usually struggle with low ROP and bits wearing out fast. This one kept going strong, drilling over 2000 meters in one go. The 27.87 m/hr average speed saved us days of rig time. We will definitely use this bit again for our next wells in the area.”— Drilling Supervisor, Team 50516
5. Conclusion & Next Steps
The 6-1/2" SD6533 PDC bit by Hainaisen proved its reliability and efficiency in one of the most challenging drilling environments in the Jiangsu Oilfield. The combination of long footage, high ROP, and reduced operational costs makes it the ideal choice for operators targeting the Liujia Gou formation and similar hard, abrasive lithologies.
Contact our engineering team today to get a customized bit recommendation for your next project.
