Case Study: Customized PDC Drill Bit Delivers Superior Performance in Well Su 25-16-37SX, Taiyuan Formation
Company: Shaanxi Hainaisen Petroleum Technology Co., Ltd.Website: https://www.hnsdrillbit.com/
1. Project Overview
This case details the successful application of Shaanxi Hainaisen’s customized PDC drill bit in the Taiyuan Formation of Well Su 25-16-37SX, delivering exceptional drilling efficiency and durability for the 40607 Drilling Crew.
| Project Detail | Specification |
|---|---|
| Well ID | Well Su 25-16-37SX |
| Drilling Formation | Taiyuan Formation |
| Drill Bit Spec No. | 6-1/SD6433 |
| Drill Bit Serial No. | A3728 |
| Drilling Interval | 2820m – 3539m |
| Drilling Crew | 40607 Drilling Crew |
| Application | Onshore Oil & Gas Drilling |
2. Core Drilling Performance Data
All metrics are verified on-site, reflecting the bit’s real-world performance in complex hard strata:
| Key Performance Indicator | Value | Technical Interpretation |
|---|---|---|
| Total Drilling Footage | 719m | Cumulative footage drilled in a single run, proving excellent bit endurance and formation adaptability |
| Net Drilling Time | 41h | Effective drilling time (excluding tripping, circulation, and auxiliary operations), demonstrating uninterrupted, stable performance |
| Average Rate of Penetration (ROP) | 17.53m/h | Core efficiency metric, outperforming the regional average ROP of 12–14m/h in the Taiyuan Formation by 25%–46% |
3. Project Background & Challenges
The Taiyuan Formation in the Ordos Basin is a notoriously difficult drilling stratum, defined by:
- Hard, highly abrasive sandstone and interbedded limestone
- Variable lithology that causes severe bit wear and impact damage
- Low penetration rates and frequent tripping with conventional bits, leading to extended drilling cycles and high costs
The 40607 Drilling Crew required a formation-specific drill bit solution to overcome these challenges and optimize performance in Well Su 25-16-37SX.
4. Customized Solution & Implementation
Shaanxi Hainaisen engineered the 6-1/SD6433 PDC drill bit (Serial No. A3728) exclusively for the Taiyuan Formation’s geological properties:
- High-Performance PDC Cutters: Premium impact-resistant, wear-resistant cutters with enhanced edge retention, optimized for hard, abrasive sandstone and limestone
- Advanced Hydraulic Design: Optimized nozzle layout and flow channels to improve cuttings removal, prevent bit balling, and maintain consistent ROP
- Reinforced Bit Body: High-strength matrix material to withstand extreme impact loads from interbedded strata, eliminating premature bit failure
Our in-house technical team provided end-to-end on-site support, including real-time drilling parameter adjustment and bit wear monitoring, to ensure maximum performance throughout the run.
5. Project Results & Client Benefits
The customized drill bit delivered game-changing results in the 2820m–3539m interval:
- Completed 719m of drilling in a single run, eliminating the need for costly intermediate bit changes
- Achieved an average ROP of 17.53m/h in just 41 hours of net drilling time
- Reduced overall drilling time by ~30% compared to conventional bit solutions in the same formation
- Cut operational costs by minimizing non-productive time (NPT) and tripping operations
This performance not only met the client’s efficiency targets but also set a new benchmark for Taiyuan Formation drilling in the block.
6. Conclusion
This case study reinforces Shaanxi Hainaisen Petroleum Technology’s leadership in customized PDC drill bit R&D and formation-specific drilling solutions. Paired with our prior success in the Liujiagou Formation of the same well, we demonstrate consistent, reliable performance across multiple complex strata in a single wellbore.
By combining advanced material science, precision bit design, and end-to-end technical support, we help oil and gas operators worldwide reduce costs, shorten drilling cycles, and unlock maximum value from their operations.
For more information about our drill bit solutions, visit our website: https://www.hnsdrillbit.com/
