Abstract
For oil and gas pipeline monitoring applications, this paper proposed a dual-parameter fusion distributed fiber optic sensor system that enables distributed temperature and distributed vibration measurements in a single fiber. Through the fiber-scattering spectrum time domain detection combined with coded pulse sequence and Raman scattering spectrum is obtained, which realizes high-resolution temperature measurement and wide-band vibrational wave measurement. The experimental results show that, on 10 km optical fiber measurement, temperature resolution up to 0.1?C and vibration response frequency range 20 Hz - 5 kHz. This sensing system achieves temperature and vibration dual-parameter measurements with fiber optics, greatly simplifying the system and facilitating installation and it can be widely used in oil and gas pipeline monitoring.
Highlights
Oil and gas pipelines can lead to pipeline leakage due to geological disasters, man-made damage and corrosion of pipelines themselves
The distributed optical fiber vibration sensors were used to monitor the oil and gas pipelines, which has the advantages of fast response speed, third-party intrusion early warning monitoring, etc., but is interfered by the external environment, prone to false alarm [7]
When the nitrogen gas began to leak, the distributed optical fiber vibration sensors (DVS) module could immediately detect the vibration signal generated by the gas leakage, distributed optical fiber temperature sensors (DTS) module could detect the abnormal decrease of the temperature in the vibration position
Summary
Oil and gas pipelines can lead to pipeline leakage due to geological disasters, man-made damage and corrosion of pipelines themselves. Commonly used pipeline monitoring methods include: ultrasonic method, negative pressure wave method, pressure gradient method, and the like. These methods are not ideal in practical applications, can only be used for pipeline leakage alarm and cannot be used for early warning monitoring [1]. It is very suitable for oil and gas pipeline leakage monitoring. The distributed optical fiber vibration sensors were used to monitor the oil and gas pipelines, which has the advantages of fast response speed, third-party intrusion early warning monitoring, etc., but is interfered by the external environment, prone to false alarm [7]. The fusion of the two parameters of temperature and vibration can overcome the shortcomings of the two parameters and improve the reliability of oil and gas pipeline safety monitoring
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
