A novel down-hole fiber optic sensor based on Fabry-Perot cavity and fiber Bragg gratings

Yong Wang; Shao-hua Chen; Peng Zhang; Guo Tao; Kun Zhao

doi:10.1117/12.870296

16 November 2010 A novel down-hole fiber optic sensor based on Fabry-Perot cavity and fiber Bragg gratings

Yong Wang, Shao-hua Chen, Peng Zhang, Guo Tao, Kun Zhao

Proceedings Volume 7851, Information Optics and Optical Data Storage; 785106 (2010) https://doi.org/10.1117/12.870296
Event: Photonics Asia 2010, 2010, Beijing, China

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.

Citation Download Citation

Yong Wang, Shao-hua Chen, Peng Zhang, Guo Tao, and Kun Zhao "A novel down-hole fiber optic sensor based on Fabry-Perot cavity and fiber Bragg gratings", Proc. SPIE 7851, Information Optics and Optical Data Storage, 785106 (16 November 2010); https://doi.org/10.1117/12.870296

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