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Sensors 2015, 15(11), 29648-29660; doi:10.3390/s151129648

Study and Test of a New Bundle-Structure Riser Stress Monitoring Sensor Based on FBG

1
Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China
2
The Key Laboratory of Space Applied Physics and Chemistry, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China
3
Key Lab of Deepwater Engineering CNOOC Research Institute, Room 808, CNOOC Plaza, Taiyanggong South Road 6#, Chaoyang District, Beijing 100028, China
4
School of Marine Science and Technology, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, China
5
Zhanjiang Western South China Sea Oil Survey and Design Co., Ltd., Nanyou Engineering Building, Nandiao Road, Zhanjiang 524057, China
*
Author to whom correspondence should be addressed.
Academic Editor: Ha Duong Ngo
Received: 27 August 2015 / Revised: 5 November 2015 / Accepted: 9 November 2015 / Published: 24 November 2015
(This article belongs to the Special Issue Sensors for Harsh Environments)
View Full-Text   |   Download PDF [1515 KB, uploaded 24 November 2015]   |  

Abstract

To meet the requirements of riser safety monitoring in offshore oil fields, a new Fiber Bragg Grating (FBG)-based bundle-structure riser stress monitoring sensor has been developed. In cooperation with many departments, a 49-day marine test in water depths of 1365 m and 1252 m was completed on the “HYSY-981” ocean oil drilling platform. No welding and pasting were used when the sensor was installed on risers. Therefore, the installation is convenient, reliable and harmless to risers. The continuous, reasonable, time-consistent data obtained indicates that the sensor worked normally under water. In all detailed working conditions, the test results show that the sensor can do well in reflecting stresses and bending moments both in and in magnitude. The measured maximum stress is 132.7 MPa, which is below the allowable stress. In drilling and testing conditions, the average riser stress was 86.6 MPa, which is within the range of the China National Offshore Oil Corporation (CNOOC) mechanical simulation results. View Full-Text
Keywords: FBG; riser; stress monitoring; bundle-structure; marine test FBG; riser; stress monitoring; bundle-structure; marine test
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Xu, J.; Yang, D.; Qin, C.; Jiang, Y.; Sheng, L.; Jia, X.; Bai, Y.; Shen, X.; Wang, H.; Deng, X.; Xu, L.; Jiang, S. Study and Test of a New Bundle-Structure Riser Stress Monitoring Sensor Based on FBG. Sensors 2015, 15, 29648-29660.

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