Introduction of new optical fiber monitoring system of fluid flow with nonintrusion

Ying Shang; Xiao-hui Liu; Chang Wang; Min-zheng Tian; Gan Li; Guo-yu Zhang; Wen-an Zhao; Jing-sheng Lv; Wei-song Zhao

doi:10.1117/12.900809

8 September 2011 Introduction of new optical fiber monitoring system of fluid flow with nonintrusion

Ying Shang, Xiao-hui Liu, Chang Wang, Min-zheng Tian, Gan Li, Guo-yu Zhang, Wen-an Zhao, Jing-sheng Lv, Wei-song Zhao

Proceedings Volume 8191, International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies; 81911P (2011) https://doi.org/10.1117/12.900809
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

Abstract

In the oil field development and production, fluid flow is an extremely important parameter which determines the transmission characteristics of the oil production, real-time monitoring of fluid flow parameter provides a scientific basis for oil and gas optimization exploration and increase of reservoir recovery. A method for interrogating fiber optic sensors non-intrusively sensing fluid flow is proposed, those sensors are positioned between pairs of low reflectivity fiber Bragg gratings, the fiber optic sensors wrapped closely around the outside wall of pipe are used to sense the internal information of fluid flow, new optical fiber monitoring system of fluid flow bases on optical signals. When optical signals are transported in optical fibers, phase is changed due to the effects of the fluid flow , the size of which can be determined by measuring the relative changes of the phase. So the optical fiber monitoring system of fluid flow making use of modulation and demodulation techniques of phase generated carrier accurately determines the size of fluid flow with non-intrusion.

Citation Download Citation

Ying Shang, Xiao-hui Liu, Chang Wang, Min-zheng Tian, Gan Li, Guo-yu Zhang, Wen-an Zhao, Jing-sheng Lv, and Wei-song Zhao "Introduction of new optical fiber monitoring system of fluid flow with nonintrusion", Proc. SPIE 8191, International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies, 81911P (8 September 2011); https://doi.org/10.1117/12.900809

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KEYWORDS

Optical fibers

Sensors

Phase shift keying

Fiber optics sensors

Interferometers

Signal detection

Demodulation

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