A new distributed optical fiber pipeline leakage pre-warning system based on the principle of Mach-Zehnder optical fiber interferometer and the method of its signal analysis are proposed in this paper. In this pre-warning system, an optical cable is laid in parallel with the pipeline in the same ditch and three single mode optical fibers in the optical cable build up the distributed micro-vibrant measuring sensor. Leakage and other abnormal events can be detected by the sensor in real-time and can be identified by using an “energy-pattern” method based on the wavelet packet analysis. The position of the leak point can be obtained by calculating the value of time delay of the two measuring signals through a correlation algorithm. This system detects various oil and gas pipeline leakages, and is especially suited for micro-leakage. At the end of this paper, experimental data obtained on oil field and the result of the signal analysis are presented. The data and the result of the signal analysis show that the measuring sensitivity and location precision of detecting leakage are improved when this technology is adopted, and abnormal events can be efficiently identified.
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2006 International Pipeline Conference
September 25–29, 2006
Calgary, Alberta, Canada
Conference Sponsors:
- Pipeline Division
ISBN:
0-7918-4263-0
PROCEEDINGS PAPER
Study on the Distributed Optical Fiber Pipeline Leakage Prewarning System and the Method of Signal Analysis
Dongjie Tan,
Dongjie Tan
PetroChina Pipeline Company, Langfang, Hebei, China
Search for other works by this author on:
Likun Wang
Likun Wang
PetroChina Pipeline Company, Langfang, Hebei, China
Search for other works by this author on:
Zhigang Qu
Tianjin University, Tianjin, China
Shijiu Jin
Tianjin University, Tianjin, China
Yan Zhou
Tianjin University, Tianjin, China
Jian Li
Tianjin University, Tianjin, China
Dongjie Tan
PetroChina Pipeline Company, Langfang, Hebei, China
Likun Wang
PetroChina Pipeline Company, Langfang, Hebei, China
Paper No:
IPC2006-10039, pp. 677-681; 5 pages
Published Online:
October 2, 2008
Citation
Qu, Z, Jin, S, Zhou, Y, Li, J, Tan, D, & Wang, L. "Study on the Distributed Optical Fiber Pipeline Leakage Prewarning System and the Method of Signal Analysis." Proceedings of the 2006 International Pipeline Conference. Volume 3: Materials and Joining; Pipeline Automation and Measurement; Risk and Reliability, Parts A and B. Calgary, Alberta, Canada. September 25–29, 2006. pp. 677-681. ASME. https://doi.org/10.1115/IPC2006-10039
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