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Proceedings Paper

A novel down-hole fiber optic sensor based on Fabry-Perot cavity and fiber Bragg gratings
Author(s): Yong Wang; Shao-hua Chen; Peng Zhang; Guo Tao; Kun Zhao
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Paper Abstract

With the rapid development of fiber optic sensing technology, more and more related monitoring programs begin to play an important role in oil and gas exploration. In the past, down-hole monitoring of temperature and pressure was dependent on pump partner, electronic pressure gauge and the capillary pressure gauge. However, such devices show many disadvantages in stability, reliability, accuracy and so on. In the interest of special anti-corrosion, seals, high temperature, high pressure treatment, and long life, the fiber optic sensor is critically investigated and a new design approach of fiber temperature and pressure sensor based on Fiber Bragg Gratings and Fabry-Perot Cavity is presented, respectively. The temperature and pressure resolution of this sensor can be as high as 0.3°C and 3psi. Meanwhile, the sensor can work under the condition from 0 to 15000psi and from -25 to 300 °C. This paper describes the technical principles, characteristics and field application of the sensor in detail.

Paper Details

Date Published: 16 November 2010
PDF: 9 pages
Proc. SPIE 7851, Information Optics and Optical Data Storage, 785106 (16 November 2010); doi: 10.1117/12.870296
Show Author Affiliations
Yong Wang, China Univ. of Petroleum (China)
Shao-hua Chen, China Univ. of Petroleum (China)
Peng Zhang, China Univ. of Petroleum (China)
Guo Tao, China Univ. of Petroleum (China)
Kun Zhao, China Univ. of Petroleum (China)

Published in SPIE Proceedings Vol. 7851:
Information Optics and Optical Data Storage
Feijun Song; Shiquan Tao; Francis T. S. Yu; Suganda Jutamulia; Kees A. Schouhamer Immink; Keiji Shono, Editor(s)

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