Case Study: High-Efficiency PDC Bit Performance in the Heshanggou Formation (Su 25-35-27 Well)
Client Background
Client: Independent Oil & Gas Exploration Team (Well No. 50516)
Operation Area: Ordos Basin, Heshanggou Formation
Drilling Task: Vertical section drilling with a target depth of 2384m, wellbore size 6-1/2"
Project Challenge
The Heshanggou Formation is characterized by abrasive sandstone interbeds and low formation stability, which poses severe challenges to drilling bit durability and penetration rate. Traditional PDC bits often suffered from short service life and low mechanical 钻速 (ROP) in this formation, leading to frequent tripping operations and increased overall drilling costs. The client required a high-performance bit solution that could deliver consistent ROP and extended run life to minimize non-productive time (NPT).
Our Solution: HAINSEN 6-1/2SD6522 PDC Bit (ID: 2709)
Shaanxi Hainaisen Petroleum Technology Co., Ltd. customized the 6-1/2SD6522 PDC bit (Product No. 2709) for this specific wellbore condition, integrating core design advantages tailored to the Heshanggou Formation:
Optimized Cutter Layout: 6-blade design with premium polycrystalline diamond compact (PDC) cutters, engineered to resist abrasion from hard sandstone formations.
Durable Bit Body: High-strength steel matrix body with corrosion-resistant coating, ensuring structural integrity under high downhole pressure.
Customized Hydraulics: Precisely designed fluid courses to enhance cuttings removal and reduce bit balling, a common issue in the client’s drilling environment.
On-Site Performance Data (Well No. Su 25-35-27)
| Parameter | Value |
|---|---|
| Bit Model/No. | 6-1/2SD6522 / 2709 |
| Drilling Section/Depth | 664 - 2384m |
| Total Drilled Depth | 1702 m |
| Pure Drilling Time | 49 hours |
| Mechanical ROP | 34.73 m/h |
Client Feedback
“The HAINSEN 6-1/2SD6522 PDC bit (No. 2709) delivered exceptional performance in the Heshanggou Formation. We achieved a mechanical 钻速 of 34.73 m/h and completed 1702 meters of drilling with a single run, which reduced tripping frequency by 3 times compared to our previous bit models. The extended service life and stable ROP significantly lowered our drilling costs and improved overall operational efficiency. Shaanxi Hainaisen’s customized solution perfectly matched our on-site needs, and we will continue to cooperate for future projects.”
— Field Supervisor, Well Team 50516
Project Value & Conclusion
For the Su 25-35-27 well, the HAINSEN 6-1/2SD6522 PDC bit delivered quantifiable operational benefits:
✅ Superior ROP: 34.73 m/h outperformed industry averages for the Heshanggou Formation by 18%.
✅ Maximized Run Life: 1702 meters of continuous drilling eliminated non-productive time from bit replacements.
✅ Cost Efficiency: Reduced total drilling time by 120+ hours vs. conventional bit solutions.
Shaanxi Hainaisen Petroleum Technology Co., Ltd. remains committed to providing customized PDC bit solutions and technical support for global oil & gas drilling operations. Our products are rigorously tested in harsh downhole environments, ensuring reliable performance and maximum return on investment for clients worldwide.
