Intrusion location method of distributed fiber optic for oil and gas gathering pipelines

Peng Wei; Wei Zhang; Yiming Zhao

doi:10.1117/12.2521398

12 March 2019 Intrusion location method of distributed fiber optic for oil and gas gathering pipelines

Peng Wei, Wei Zhang, Yiming Zhao

Proceedings Volume 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application; 110231B (2019) https://doi.org/10.1117/12.2521398
Event: Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 2018, Xi'an, China

Abstract

In order to detect external intrusion which threatens the safety of oil-gas gathering pipelines in time, it is necessary to monitor the operation status of pipelines in real time. A distributed fiber optic perturbation sensing principle based on the Mach-Zehnder (M-Z) interferometer was described. The experimental device was set up to monitor the intrusion signal along the optical fiber. An improved cross correlation algorithm was used to locate intrusion, which processed piecewise signal. Experiments were completed on the disturbance's optic fiber with a total length of 10.1km. The system monitored the external intrusion signal and correctly displayed the position in real time. The average positioning error 68.12m is achieved. The positioning error is reduced about 43% over the conventional method. The proposed method can effectively improve the positioning accuracy of the external intrusion signal.

Citation Download Citation

Peng Wei, Wei Zhang, and Yiming Zhao "Intrusion location method of distributed fiber optic for oil and gas gathering pipelines", Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 110231B (12 March 2019); https://doi.org/10.1117/12.2521398

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