Netico Leak Detection System – Leak Hunter


Leak Hunter can alert, quickly detect, pinpoint the quantity and the precise location of a leak in oil or water pipelines. This helps in taking decisive action to prevent financial and environmental damages with reduced inspection time.

The Leak Hunter application can function as a stand-alone, independent, alarm system, or it can be integrated with an existing programmable logic controllers, SCADA systems, facility automation-management systems, and distributed control systems.

For normal operation, Leak Hunter requires an Intel based personal computer or a server running a version of MS Windows operating system, and a reliable network connection. An existing computing infrastructure can be reused, thus minimizing system installation and maintenance costs. Leak Hunter is also installed and interfaced to the existing systems with none or very minimal disruption to the normal pipeline operations.
Interfacing with different software and hardware is a common practice in the oil and gas industry, since different equipment and software systems are necessary for normal pipeline operation. Even if your existing system does not support standard integration interfaces, Netico will design and implement an adequate interfacing solution on project basis, in order to maximize the potential of your existing infrastructure.


 

HOW DOES IT WORK?

A spontaneous leak will cause a negative pressure wave in the pipeline, simply because liquid is leaking out. This pressure wave will travel through the pipeline at the speed of sound in the liquid flowing through the pipeline. Depending on the location of the leak, the pressure wave will arrive at some pressure measurement points before it arrives at the others. The leak position can be calculated from the difference in these arrival times. Calculation is adjusted through various measured or simulated parameters that can influence propagation speed and compensate for measurement equipment imprecisions.

MAIN FEATURES
  • Reliability
  • Precision
  • High Resolution Data Storage Buffer
  • Pipeline State Machine

 

RELIABILITY

Reliability is achieved through implementation of three independent leak detection algorithms:

  • Pressure & flow disturbance pattern recognition
  • Disturbances propagation pattern recognition
  • Real measurement vs. model prediction.

Leak Hunter allows definition of the pipeline model which consists of pipe geometry and material properties, and includes information such as ground elevation, route, pipe cross-section profile, etc. Based on the model, it is possible to simulate pipeline performance and compare it in real time to the actual, measured, performance.

 

PRECISION

Accuracy of the leak position and estimated leak quantities is achieved using following principles and techniques:

  • Multi-level statistical analysis on real time Pressure, Flow, Temperature, Viscosity, Density and Speed values
  • Simulated, predefined and self learning parameters that can be adjusted to compensate for imprecisions of measurement equipment
  • Multiple leak detection algorithms running in parallel and using different parameters. Leak position and quantity is adjusted by comparing output of each of the parallel running algorithms.
HIGH RESOLUTION DATA STORAGE BUFFER

Netico Leak Hunter provides a high resolution data storage buffer for all the pipeline measurements in immediate past. This data buffer is used for more efficient real time calculations required by the implemented leakage detection algorithms.

Pipeline state machine

Leak Hunter supports a pipeline state machine (stable stationary, transit-transient, stable transport) decision making algorithm. Pipeline state can be also changed / forced by the user at any time. Pipeline state is changed based on the monitoring of valve and pump statuses. Current pipeline state is used for leakage decision making and elimination of false alarms.

Contact us to learn more about Netico Leak Hunter and see it in action.

 

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