8-1/2" SD6545 PDC Bit Field Case: 523m Drilling in Taiyuan Formation, Su 76-5-29X Well

Company: Shaanxi Hainaisen Petroleum Technology Co., Ltd.

Website: https://www.hnsdrillbit.com/

1. Project Background

The Su 76-5-29X well, operated by the 40695 drilling crew, targets the Taiyuan Formation in the Sulige Gas Field, a typical tight sandstone gas reservoir in the Ordos Basin. The Taiyuan Formation is characterized by high hardness, strong abrasiveness, and interbedded hard and soft strata, which poses severe challenges to drill bit performance:

• High rock hardness leads to rapid bit wear and low ROP
• Interbedded strata cause frequent bit vibration, increasing the risk of bit failure
• Long drilling cycles and high bit consumption are long-standing pain points for local drilling operations

The client required a PDC bit solution that could deliver high ROP, long footage, and stable performance to reduce drilling costs and shorten the construction cycle.

2. Bit Solution: 8-1/2" SD6545 PDC Bit

After a detailed analysis of the Taiyuan Formation's lithology, drilling parameters, and historical bit performance, our technical team selected the 8-1/2" SD6545 steel-body PDC bit for this operation. This bit is specifically designed for medium-hard to hard abrasive formations, with optimized features:

• Cutting structure: 5-blade design with high-impact resistant PDC cutters, balancing aggressiveness and wear resistance
• Hydraulic optimization: Deep, large-flow nozzles and smooth chip grooves to ensure efficient cuttings removal, avoiding balling
• Body design: High-strength steel body with enhanced impact resistance, suitable for long-interval continuous drilling in abrasive strata

3. Field Performance Data

Key Performance Highlights

• High ROP: The average ROP of 19.38 m/h is 30% higher than the average performance of offset bits in the same formation, significantly shortening the drilling cycle
• Long Footage: The bit completed 523m of continuous drilling in the hard abrasive Taiyuan Formation with no pull-out due to wear, reducing bit replacement times
• Stable Operation: No abnormal vibration, bit bounce, or balling occurred during the entire drilling process, ensuring safe and efficient operation

4. Client Feedback

After the completion of the drilling operation, the 40695 drilling crew gave a high evaluation of the SD6545 PDC bit:

"We've used PDC bits from multiple suppliers in the Taiyuan Formation of the Sulige Gas Field, and Hainaisen's SD6545 is the one that really impressed us. The ROP is much faster than our previous bits, and we completed 523 meters in one run without any issues. The bit's wear resistance is outstanding, and it saved us nearly 10 hours of drilling time compared to the offset well. This bit has effectively reduced our drilling cost and improved our construction efficiency. We will continue to use Hainaisen's bits in our subsequent wells."

5. Why Choose Hainaisen?

Shaanxi Hainaisen Petroleum Technology Co., Ltd. is a professional manufacturer of PDC bits and drilling tools for the oil and gas industry. We focus on providing customized, high-performance drilling solutions for different formations and drilling conditions:

• Independent R&D: Our technical team has more than 10 years of experience in PDC bit design, with a complete R&D system from lithology analysis to bit optimization
• Strict Quality Control: All bits undergo strict quality inspection and performance testing before delivery, ensuring stable and reliable performance in the field
• On-site Technical Support: We provide 24/7 on-site technical support, from pre-drilling bit selection to post-drilling bit analysis, to maximize customer benefits

For more information about our PDC bit solutions, please visit our official website: https://www.hnsdrillbit.com/