December 6, 2022 – Nitrogen Gas Unblockage Emergency Project at Well S3, Jiaoye Platform 85

In December 2022, our company responded urgently to a critical stuck-continuous-tubing incident at Well S3 on the Jiaoye 85 platform of Sinopec Jianghan Oilfield. Within 24 hours, we dispatched liquid nitrogen equipment to the site. Faced with challenging well conditions, our team worked around the clock in close coordination with the client’s experts, dynamically adjusting the operational plan as needed. On the first day, December 9, we injected 20 cubic meters of liquid nitrogen; based on expert recommendations, we immediately arranged for an additional 80 cubic meters to be delivered. Over the next five days, our team maintained intense, high-pressure operations, cumulatively injecting more than 100 cubic meters of nitrogen while precisely supporting the continuous-tubing-based unjamming procedure. Throughout the entire process, we rigorously adhered to safety protocols and conducted real-time monitoring of well conditions. Thanks to our exceptional resource management and seamless emergency response capabilities, we helped the client overcome this major production challenge—and were highly praised for our outstanding "organization and execution of liquid nitrogen operations."