A new leak location method based on leakage acoustic waves for oil and gas pipelines |
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| Institution: | 1. College of Pipeline and Civil Engineering in China University of Petroleum (East China), Qingdao 266580, China;2. Sinopec Qingdao LNG Co.,Ltd, Qingdao 266400, China;3. Key Laboratory of Qingdao Oil and Gas Storage and Transportation Technologies, China;4. Key Laboratory of CNPC Heavy Gas Transportation and LNG Technologies, China;1. College of Mechanical and Transportation Engineering, China University of Petroleum (Beijing), Beijing 102249, China;2. Chengde Petroleum College, Hebei 067000, China;1. School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China;2. School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, China;1. College of Pipeline and Civil Engineering in China University of Petroleum (East China), Qingdao, 266580, China;2. VCPV PV3A. Volvo Car Group. Gunnar Engellaus väg 21. SE-418 78, Göteborg, Sweden;1. School of Information Science and Engineering, Yanshan University, QinHuangDao 066004, Hebei Province, PR China;2. Key Laboratory of Measurement Technology and Instrumentation of Hebei Province, Yanshan University, Qinhuangdao 066004, Hebei Province, PR China;3. School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA |
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| Abstract: | In order to study a new leak detection and location method for oil and natural gas pipelines based on acoustic waves, the propagation model is established and modified. Firstly, the propagation law in theory is obtained by analyzing the damping impact factors which cause the attenuation. Then, the dominant-energy frequency bands of leakage acoustic waves are obtained through experiments by wavelet transform analysis. Thirdly, the actual propagation model is modified by the correction factor based on the dominant-energy frequency bands. Then a new leak detection and location method is proposed based on the propagation law which is validated by the experiments for oil pipelines. Finally, the conclusions and the method are applied to the gas pipelines in experiments. The results indicate: the modified propagation model can be established by the experimental method; the new leak location method is effective and can be applied to both oil and gas pipelines and it has advantages over the traditional location method based on the velocity and the time difference. Conclusions can be drawn that the new leak detection and location method can effectively and accurately detect and locate the leakages in oil and natural gas pipelines. |
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| Keywords: | Oil and gas pipelines Leakage acoustic wave Propagation model Experimental study Leak location |
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