Oil and Gas Pipeline Safety Monitoring Application
A new sensing technology that uses light waves as carriers and optical fibers as media to "sense" and "transmit" external measurement signals.
Puniu HiFi-DAS Distributed Optical Fiber Acoustic Sensing System uses one fiber of the ordinary single-mode communication optical cable laid in the same trench with long-distance oil and gas pipelines as the front-end sensor. It can obtain the frequency, amplitude, and phase information of vibration waveforms around any position along the optical cable in real-time. By identifying specific event types (such as pipeline leaks, pig tracking, mechanical excavation, vehicle driving, manual excavation, etc.), it can accurately locate and issue alarms, achieving online real-time monitoring and security warning for the entire pipeline.
Figure 1: Different waveforms generated by various events
Figure 2: System Architecture Diagram
1. Real-time monitoring and early warning system for third-party pipeline damage:
The system uses advanced distributed acoustic sensing and intelligent analysis technologies. It employs a single-mode fiber optic cable core laid alongside the pipeline as the front-end sensor. This allows for real-time acquisition of soil sound, vibration frequency, amplitude, and phase information near the cable. By combining a unique database and deep learning algorithms, the system conducts data analysis and intelligent threat strategy analysis, achieving precise GIS positioning.
Key features include:
- Illegal construction monitoring
- Manual excavation detection
- Pipeline leak detection
- Vehicle movement detection
- Fiber optic cable damage detection
- Geological disaster monitoring and early warning
2. Online Pipeline Leakage Monitoring: Solving the leakage monitoring issues caused by manufacturing and installation defects or aging and corrosion of pipelines.
3. Ground Surface Load: Monitoring of buildings or vehicle traffic pressure.
4. Pigging Operation Tracking and Monitoring: The DAS system collects vibration and acoustic signal data from the pipeline surface in real-time to obtain the location information of the pig.
5. Online monitoring of geological disasters around pipelines
Geological disasters caused by internal crustal movements, including:
- Earthquakes
- Ground collapse
- Subsidence
- Ground fissures
Geological disasters caused by external environmental factors, including:
- Landslides
- Debris flows
- Flood erosion
- Wind erosion
Geological disasters caused by special soil conditions
- Precise measurement: 100% detection rate, effective alarm rate >99%, stable and reliable measurement, low false alarm rate, continuous distributed vibration measurement, no measurement blind spots;
- Ultra-long distance: 50 km in open path, 100 km in closed loop;
- Intrinsic safety: capable of long-term operation in flammable and explosive environments, optical signal transmission, anti-electromagnetic interference, completely electrically insulated;
- Accurate positioning: can accurately locate the occurrence of incidents, and can simultaneously detect and accurately locate multiple events;
- Response speed: fast response speed, can alarm within 1 second;
- Long lifespan: fiber lifespan can reach 30 years, can provide real-time monitoring of pipeline safety year-round, low maintenance costs in the later stage;
- All-fiber: fiber integrates sensing and transmission;
- Visual interface: user-friendly software, provides visual interface, the system can perform vibration image recognition based on intrusion source characteristics, enabling recognition of different vibration sources such as mechanical excavation, oil theft by drilling, manual excavation, vehicle passage, etc.
