PetroChina uses our company's "Passive Fiber Laser Leakage Monitoring System" on the Shaanxi-Beijing No. 4 long-distance pipeline, which has the largest diameter and the highest pressure in China, to build the world's first long-distance buried pipeline online monitoring network.

The system mainly performs 24-hour online real-time monitoring of buried pipelines and insulated joints on the fourth line of Shaanxi-Beijing, which mainly solves the problem that the leakage of buried pipelines could not be monitored in the past, and realizes the closure of natural gas pipelines when there is no power supply. Online real-time monitoring of leaks in the space. In the early stage of a small amount of leakage in the buried pipeline, it can be discovered and dealt with in time, so as to avoid the situation that the cost of strict treatment of the later leakage is too high or cannot be handled.

The project has passed the acceptance of PetroChina, expressed satisfaction with the on-site operation, met the design and construction performance requirements, realized all-weather monitoring of buried pipelines and early detection of leakage during production and operation, and improved the comprehensive level of natural gas pipeline safety management.

 Monitoring on-site installation

Monitoring on-site installation

Shaanxi-Beijing Fourth Line