Fiber Optic Pipeline Monitoring

Fiber Optic Pipeline Monitoring for Critical Infrastructure

Oil, gas and water pipelines can extend across hundreds of kilometres, making continuous monitoring essential for maintaining asset integrity, protecting the surrounding environment and reducing operational risk. Senowell Systems provides distributed fiber optic pipeline monitoring solutions that combine temperature, strain and acoustic sensing to continuously monitor pipeline conditions in real time. By combining Distributed Temperature and Strain Sensing (DTSS) with Distributed Acoustic Sensing (DAS), pipeline operators can monitor for leaks, third-party intrusion, ground movement and other events along extensive pipeline routes.

Real-Time Pipeline Monitoring

Traditional pipeline inspection methods may provide information only at specific points or during scheduled inspections. Distributed fiber optic sensing provides a different approach. A sensing fiber installed along the pipeline route can provide continuous monitoring information across the monitored section, allowing operators to identify events and determine their location. Senowell Systems uses distributed sensing technologies to support 24/7 pipeline monitoring, helping operators move from periodic inspection toward continuous asset awareness.

Pipeline Leak Detection

Pipeline leaks can create significant safety, environmental and financial consequences. Senowell's fiber optic monitoring architecture can use DTSS and DAS together to identify leak-related events. DTSS monitors temperature variations in the ground surrounding the pipeline, while DAS detects the acoustic and vibration signatures generated by a leak. Combining these sensing mechanisms provides complementary information about the event and can help determine its location for faster investigation and repair.

Distributed Temperature & Strain Sensing

Distributed Temperature and Strain Sensing (DTSS) provides continuous measurement information along the monitored fiber. For pipeline applications, temperature changes around the pipeline can provide an indication of a potential leak, while strain information can provide information about changes affecting the pipeline or surrounding environment. DTSS can also detect ground movement along the pipeline route, including movement associated with seismic activity, landslides and rock falls.

Distributed Acoustic Sensing for Pipeline Security

Distributed Acoustic Sensing (DAS) monitors acoustic and vibration activity along the pipeline. This allows the sensing system to identify events associated with activity around the pipeline, including potential third-party intrusion. The source describes DAS as collecting thousands of acoustic measurement points along the asset, providing real-time information about potential theft or unauthorised construction activity.

Third-Party Intrusion Detection

Pipelines can be exposed to activities taking place around their right-of-way.

These can include:

Unauthorised excavation Construction activity Theft attempts Other third-party activities DAS technology can detect acoustic and vibration events associated with activity around the monitored pipeline and provide operators with information about the location of the event.

Ground Movement & Geohazard Monitoring

Pipeline integrity can also be affected by changes in the surrounding ground. Senowell's distributed fiber optic monitoring approach can detect changes associated with: Ground movement Landslides Rock falls Seismic events Soil erosion DTSS is specifically identified as being sensitive to ground movement along the pipeline route.

Pipeline Deformation Monitoring

Changes in the mechanical condition of a pipeline can be an important indicator of developing integrity issues. Distributed strain sensing can provide information about deformation along the monitored pipeline, supporting earlier identification and investigation of abnormal conditions. The source specifically identifies pipeline deformation detection as an application of the monitoring solution.

Pipeline Wall Temperature Monitoring

Temperature monitoring can provide useful information about pipeline operating conditions and abnormal events. The pipeline application specifically identifies pipeline wall temperature monitoring as one of the supported applications.

Monitoring Buried & Exposed Pipelines

Senowell Systems can develop monitoring architectures for both buried and exposed oil, gas and water pipelines. Fiber optic sensing can be deployed along the pipeline route to create a continuous monitoring layer around critical infrastructure.

One Fiber Optic Monitoring Architecture — Multiple Threats

A major advantage of combining DTSS and DAS is the ability to monitor several different threats using complementary sensing technologies.

DTSS - Temperature + Strain

Detect:

Leak-related temperature changes Pipeline deformation Ground movement Landslide-related movement Rock falls Soil-related events

DAS - Acoustic + Vibration

Detect:

Leak-related acoustic signatures Excavation Third-party intrusion Theft-related activity Unauthorised construction This creates a multi-threat monitoring architecture for long-distance pipeline infrastructure.

From Detection to Location

Detecting that an event has occurred is only part of the problem. Knowing where it happened is critical for pipeline operators. The source states that both DTSS and DAS solutions can accurately locate events along the monitored pipeline, helping operators direct inspection and repair teams to the affected location.

Continuous Pipeline Asset Awareness

Senowell Systems' approach is designed around continuous monitoring rather than isolated inspection points. The result is a monitoring layer that can provide operators with:

Key Benefits

24/7 pipeline monitoring Distributed fiber optic sensing Leak detection Leak location Third-party intrusion detection Pipeline deformation monitoring Ground movement detection Landslide monitoring Rock fall detection Soil erosion monitoring Pipeline wall temperature monitoring Long-distance monitoring Real-time event detection Reduced inspection and response time Monitoring of buried and exposed pipelines