A STA/LTA Based Pipeline Leak Detection Method

A STA/LTA Based Pipeline Leak Detection Method

Leak detection

Signal processing

Petroleum pipelines

Seismology

A method, combing the STA/LTA method in seismic identification with the negative pressure detection, was studied and applied to oil pipeline leak detection. According to the signal similarity of seismic first arrival and negative pressure produced in oil pipeline leak, the STA/LTA method was used to capture and extract the arrival time of negative pressure wave precisely. By obtaining the time delay between the stations on the two sides of the pipe, the position of leak could be calculated. Studied results indicate that, STA/LTA method can not only effectively recognize the leak signal, but also can reduce the computational complexity in the signal processing, such as the wavelet analysis. The experimental results show the superiority of the STA/LTA method, that it can recognize the negative pressure wave effectively. 2020, Editorial Department of Transaction of Beijing Institute of Technology. All right reserved.

760-764

7

40

Wang, Gui-Yu

Fang, Rui

Sun, Kai

Li, Hong-Yan

Wang, Hao-Yu

Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology

2020

journalArticle

10010645

10.15918/j.tbit1001-0645.2019.168

http://dx.doi.org/10.15918/j.tbit1001-0645.2019.168