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1.发明申请公开(公告)号：US20180136036A1
公开(公告)日：2018-05-17
申请号：US15538832
申请日：2015-12-23
Applicant: Eni S.p.A.
Inventor： Andrea GALTAROSSA , Luca PALMIERI , Massimo ZAMPATO
CPC classification number: G01H9/004 , G01D5/268 , G01K11/32 , G01K2011/324 , G01M11/3154 , G01M11/319 , G02B6/02319
Abstract: Reflectometric vibration measurement system to monitor multiphase flows in production wells or pipelines using multimode fibers comprising: a sensing multimode optical fiber; an optical source with at least one fiber output port, which generates optical pulses which are to be sent to the sensing fiber; an optical receiver with at least one multimode fiber input port; an optical device with at least 3 multimode fiber ports, in which one port is connected to the optical source, one port to the optical receiver, and one port to the sensing multimode fiber; a system for processing the output signals from the optical receiver, further comprising more than one spatial mode filter. A process for reconfiguring an optical reflectometry system which has already been installed in a monitoring structure is also described.
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公开(公告)号：US20250123139A1
公开(公告)日：2025-04-17
申请号：US18688110
申请日：2022-09-21
Applicant: ENI S.P.A.
Inventor： Massimo ZAMPATO , Axel TUROLLA , Stefano CARMINATI , Luca PALMIERI
Abstract: A system and method for monitoring by optical fiber for the measurement of vibrations an object/structure includes the optical fiber associated with the object/structure and one end connected to a circulator and a terminated opposite end, a source of symbols emitting sequence of NS input signals and configured to generate an input vector, a multi-carrier OFDM modulation block adapted to modulate a light beam emitted by a laser source by an OFDM modulating signal to determine a sensing signal with NC subcarriers, the modulating signal OFDM being generated on the basis of the input vector; the circulator adapted to send the sensing signal to the optical fiber and to receive a backscattered signal; an OFDM demodulation block; and a processing unit that processes the output and input vectors, on the basis of respective Nc reference vectors of the optical fiber, generating a deformation vector.
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3.发明申请公开(公告)号：US20170336248A1
公开(公告)日：2017-11-23
申请号：US15538764
申请日：2015-12-23
Applicant: Eni S.p.A.
Inventor： Andrea GALTAROSSA , Luca PALMIERI , Massimo ZAMPATO
CPC classification number: G01H9/004 , G01D5/35361 , G01F1/661 , G01V8/24 , G01V11/002
Abstract: 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.
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