title: Study and Test of a New Bundle-Structure Riser Stress Monitoring Sensor Based on FBG.
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.
authors.affiliation: Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. xujian1989@hotmail.com.|The Key Laboratory of Space Applied Physics and Chemistry, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. xujian1989@hotmail.com.
authors.forename: Jian
authors.initials: J
authors.lastname: Xu
authors.affiliation: Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. dxyang@nwpu.edu.cn.|The Key Laboratory of Space Applied Physics and Chemistry, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. dxyang@nwpu.edu.cn.
authors.forename: Dexing
authors.initials: D
authors.lastname: Yang
authors.affiliation: Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. qin_adpnwpu@163.com.|The Key Laboratory of Space Applied Physics and Chemistry, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. qin_adpnwpu@163.com.
authors.forename: Chuan
authors.initials: C
authors.lastname: Qin
authors.affiliation: Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. yjjiang@nwpu.edu.cn.|The Key Laboratory of Space Applied Physics and Chemistry, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. yjjiang@nwpu.edu.cn.
authors.forename: Yajun
authors.initials: Y
authors.lastname: Jiang
authors.affiliation: Key Lab of Deepwater Engineering CNOOC Research Institute, Room 808, CNOOC Plaza, Taiyanggong South Road 6#, Chaoyang District, Beijing 100028, China. shenglx@cnooc.com.cn.
authors.forename: Leixiang
authors.initials: L
authors.lastname: Sheng
authors.affiliation: Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. jiaxiangyun@mail.nwpu.edu.cn.|The Key Laboratory of Space Applied Physics and Chemistry, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. jiaxiangyun@mail.nwpu.edu.cn.
authors.forename: Xiangyun
authors.initials: X
authors.lastname: Jia
authors.affiliation: Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. by910305@163.com.|The Key Laboratory of Space Applied Physics and Chemistry, School of Science, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. by910305@163.com.
authors.forename: Yang
authors.initials: Y
authors.lastname: Bai
authors.affiliation: School of Marine Science and Technology, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. xhshen@nwpu.edu.cn.
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Shen
authors.affiliation: School of Marine Science and Technology, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China. hywang@nwpu.edu.cn.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Wang
authors.affiliation: Zhanjiang Western South China Sea Oil Survey and Design Co., Ltd., Nanyou Engineering Building, Nandiao Road, Zhanjiang 524057, China. dengxin@cnooc.com.cn.
authors.forename: Xin
authors.initials: X
authors.lastname: Deng
authors.affiliation: Key Lab of Deepwater Engineering CNOOC Research Institute, Room 808, CNOOC Plaza, Taiyanggong South Road 6#, Chaoyang District, Beijing 100028, China. xulb@cnooc.com.cn.
authors.forename: Liangbin
authors.initials: L
authors.lastname: Xu
authors.affiliation: Key Lab of Deepwater Engineering CNOOC Research Institute, Room 808, CNOOC Plaza, Taiyanggong South Road 6#, Chaoyang District, Beijing 100028, China. jiangshq@cnooc.com.cn.
authors.forename: Shiquan
authors.initials: S
authors.lastname: Jiang
keywords: FBG; bundle-structure; marine test; riser; stress monitoring