Research on Corrugated Diaphragm Sensing Technique Detecting the Pressure outside the Casing

Abstract:

Monitoring the pressure outside casing of oil-water wells is significant to prevent and reduce casing damage. Aiming at the problem of permanently monitoring the pressure outside casing of oil-water wells, according to FBG sensing principles, FBG is packaged by FRP, pressure sensitivity program is designed, make sure strain for four bending points of FBG sensor are well-distributed, take sinusoidal corrugated diaphragm as elastic element, a monitoring sensor with temperature compensation is developed. Pressure performance calibration test of the sensor is conducted, experimental results show that the sensor has stable performance and fine temperature compensation capability, the pressure measuring range is, sensitivity is 109.

• Periodical: Advanced Materials Research (Volumes 301-303)
• Pages: 840-846
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.301-303.840
• Online since: July 2011
• Authors: Jun He, Hui Juan Dong, Hong Liang Pan, Guo Juan Cheng, Yang Xing
• Keywords: Casing, Corrugated Diaphragm, Fiber Bragg Grating (FBG), Pressure outside the Casing

References

[1] Cheng JianGuo, Liu XingPu, Li JunFang. Application of storage logging technology in oil exploiting, 2005, 12(5): 84-85.

[2] He Jun, Zhou Zhi, Dong Huijuan, Zhang Guangyu . Study on a new kind of surface sticking strain sensor with sensitivity enhanced based on FBG, SPIE Vol. 6595 65953K (2006).

DOI: 10.1117/12.725934

[3] He Jun, Dong Huijuan, Zhang Guangyu. Study on the displacement sensor based on FBG, Communications and Photonics conference and Exhibition, 2009. ACP 2009. Asia , vol., no., pp.1-2, 2-6 Nov. (2009).

DOI: 10.1364/acp.2009.wl98

[4] Fan DaJun, Liu GuangYu. Design of a new type elastic sensitive element, Beijing: National Defence Industrial Press, 1995: 133-135.

[5] Liu Qin, Lv ZhongGang, Chen YanWen, structure design of diffused silicon semiconductor force transducer and encapsulation technology study. 1996, (5): 18-19.

[6] Fan DaJun, Huang Cen. Design of three circle arc corrugated diaphragms, Chinese Journal of Scientific Instrument. 1983, 4(4): 4-6.

[7] Giovanni M. Flat and corrugated diaphragm design hand book. Marcel Dekker, Inc. New York and Basel, 1982: 259-294.

[8] He Jun, Dong HuiJuan, Yang Kan, and Zhang GuangYu. Experimental study in optical fiber temperature monitoring,. SPIE, Vol. 7649, 764908 (2010).

[9] He, Jun, Dong, Huijuan, Yang, Kan, Zhang, Guangyu. Comparative experiment study of distributed optical fiber temperature monitoring methods,. 2010 IEEE International Conference on Information and Automation, ICIA 2010, pp.952-955.

DOI: 10.1109/icinfa.2010.5512139