- 专利标题: OPTICAL FIBER VIBRATION MEASUREMENT SYSTEM IN MULTIPHASE FLOWS WITH RELATED METHOD TO MONITOR MULTIPHASE FLOWS
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申请号: US15538764申请日: 2015-12-23
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公开(公告)号: US20170336248A1公开(公告)日: 2017-11-23
- 发明人: Andrea GALTAROSSA , Luca PALMIERI , Massimo ZAMPATO
- 申请人: Eni S.p.A.
- 优先权: ITMI2014A002243 20141223
- 国际申请: PCT/IB2015/059912 WO 20151223
- 主分类号: G01H9/00
- IPC分类号: G01H9/00 ; G01D5/353 ; G01F1/66 ; G01V11/00
摘要:
A vibration measurement system and relative method to monitor multiphase flows in extraction wells or conduits, by analysis of backscattered multimode fiber light comprising: • a sensing multimode optical fiber; • an optical source, containing a high coherence laser that emits optical pulses to be sent in said sensing fiber; • a photonic lantern with 3 or more single-mode optical fiber ports and one multimode fiber port that is connected to the sensing multimode fiber; • an optical receiver, comprising a number of photodetectors equal to the number of the single-mode optical fiber ports of said photonic lantern minus 1, wherein each photodetector is connected to each of said single-mode ports; • a system for processing output signals from the optical receiver, the optical source being connected to one of the single-mode optical fiber ports and the other single-mode fibers being connected to the optical receiver. A process is also described for reconfiguring an optical reflectometry system already installed at a facility to be monitored.