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公开(公告)号：US20220057275A1
公开(公告)日：2022-02-24
申请号：US17299304
申请日：2019-12-02
Applicant: Hifi Engineering Inc.
Inventor： John Hull , Seyed Ehsan Jalilian
Abstract: There is described an apparatus for testing whether a fiber optic monitoring system is functioning properly. The apparatus includes an enclosure comprising one or more apertures for receiving therethrough optical fiber; and one or more actuators sealed within the enclosure for generating one or more interference signals for interfering with optical fiber within the enclosure such that an optical path length of the optical fiber is altered. There is also described a method for verifying an event detection system, comprising: interrogating optical fiber positioned alongside a conduit by sending one or more light pulses along the optical fiber and receiving reflections of the one or more light pulses; and using a event verification device housed within an enclosure through which passes the optical fiber to generate one or more interference signals for interfering with the optical fiber such that an optical path length of the optical fiber is altered.
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公开(公告)号：US20210055494A1
公开(公告)日：2021-02-25
申请号：US17094203
申请日：2020-11-10
Applicant: Hifi Engineering Inc.
Inventor： John Hull , Neil Gulewicz , Robert Sokolowski , Oleksiy Pletnyov , Souheil Merhi , Philip Cheuk , Seyed Ehsan Jalilian
IPC: G02B6/44
Abstract: There are described methods and systems for deploying optical fiber within a conduit. In one aspect, an optical fiber injector comprising a pressure vessel having a fluid inlet and a fluid outlet. The fluid outlet is engaged with an open end of the conduit. A length of optical fiber is provided within the pressure vessel. The optical fiber is then jetted into the conduit by injecting a fluid into the pressure vessel via the fluid inlet. The optical fiber injector is configured such that the fluid is directed from the fluid inlet to the fluid outlet, and urges the optical fiber to move through the conduit, thereby deploying the optical fiber within the conduit. In a further aspect, there is provided a modular assembly comprising a pipeline and a line of two or more conduits arranged end-to-end. Each pair of opposing ends of adjacent conduits is connected together by a separate splice box. The line is positioned along and adjacent to a length of the pipeline.
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Patent Agency Ranking
公开(公告)号：US10746208B2
公开(公告)日：2020-08-18
申请号：US16063659
申请日：2016-12-16
Applicant: Hifi Engineering Inc.
Inventor： Derek Logan , John Hull , Seyed Ehsan Jalilian
IPC: F16B2/06 , G01N29/00 , G01M3/38 , G01M5/00 , G01M11/08 , G01N29/24 , G01L1/24 , G01H9/00 , G01B11/16 , G02B6/46 , G02B6/293 , G02B6/34
Abstract: A method for non-intrusive pipeline testing involves constructing the pipeline at a construction location that is above ground, affixing an optical fiber along a surface of a length of the pipeline that is at the construction location, measuring dynamic strain experienced by the length of the pipeline by performing optical interferometry using the optical fiber, and moving the length of the pipeline from the construction location to a different installation location. The optical fiber includes at least one pair of fiber Bragg gratings (“FBGs”) tuned to reflect substantially identical wavelengths with a segment of the optical fiber extending between the FBGs.
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公开(公告)号：US10234345B2
公开(公告)日：2019-03-19
申请号：US15323937
申请日：2014-07-04
Applicant: Hifi Engineering Inc.
Inventor： John Hull , Seyed Ehsan Jalilian
Abstract: A system and method for detecting dynamic strain of a housing. The system includes an optical fiber linearly affixed along a surface of a length of the housing and an interrogator comprising a laser source and a photodetector. The optical fiber comprises at least one pair of fiber Bragg gratings (FBGs) tuned to reflect substantially identical wavelengths with a segment of the optical fiber extending between the FBGs. The segment of the optical fiber is linearly affixed along the surface of the housing. The interrogator is configured to perform interferometry by shining laser light along the optical fiber and detecting light reflected by the FBGs. The interrogator outputs dynamic strain measurements based on interferometry performed on the reflected light.
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公开(公告)号：US10215017B2
公开(公告)日：2019-02-26
申请号：US15103750
申请日：2014-12-10
Applicant: Hifi Engineering Inc.
Inventor： John Hull , Seyed Ehsan Jalilian
Abstract: An apparatus for detecting acoustic signals in housing is disclosed. The housing may be housing of a wellbore, riser, tubular or pipeline or the like for transporting fluids or housing of a vessel for storing fluids. The apparatus comprises a longitudinally extending tube having an internal surface and an external surface, a longitudinally extending fiber optic cable disposed within the tube, and one or more than one longitudinally extending outer fins radially extending outwards from and coupled with the external surface of the tube. The outer fin is configured to project towards the housing and allows fluid between the external surface of the tube and the housing when the apparatus is positioned in the housing. The apparatus may alternatively comprise a longitudinally extending fiber optic cable coated with a coating and one or more than one longitudinally extending outer fin radially extending outwards from and coupled with the coated fiber optic cable.
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公开(公告)号：US20170153154A1
公开(公告)日：2017-06-01
申请号：US15323932
申请日：2014-07-04
Applicant: Hifi Engineering Inc.
Inventor： John Hull , Seyed Ehsan Jalilian
IPC: G01L1/24
Abstract: A device and system for detecting dynamic strain. The device comprises a longitudinally extending carrier and an optical fiber embedded along an outer surface of a length of the carrier. The optical fiber comprises at least one pair of fiber Bragg gratings (FBGs) tuned to reflect substantially identical wavelengths. The system comprises the device and an interrogator comprising a laser source and a photodetector. The interrogator is configured to perform interferometry by shining laser light along the optical fiber and detecting light reflected by the FBGs. The interrogator outputs dynamic strain measurements based on interferometry performed on the reflected light.
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37.发明申请公开(公告)号：US20130167628A1
公开(公告)日：2013-07-04
申请号：US13682502
申请日：2012-11-20
Applicant: HiFi Engineering Inc.
Inventor： John Hull , Seyed Ehsan Jalilian
CPC classification number: G01V1/001 , E21B47/101 , E21B47/1025 , E21B47/123 , G01V8/10 , G06F17/00
Abstract: The present disclosure is directed at methods, apparatuses, and techniques for detecting an acoustic event along a channel. Different wavelengths of an optical signal are multiplexed along a fiber optic strand extending along the channel. The strand has groups of transducers located along its length, and all of the transducers in any one of the groups reflect a tuned wavelength when not under strain. The wavelength that the transducers reflect changes in response to strain. Optical signal processing equipment receives reflected optical signals from the groups of transducers, and determines, for each of the groups of transducers, differences between wavelengths of the optical signals reflected by the transducers of that group and the tuned wavelength for that group. The differences correspond to the loudness of the event measured by that group of transducers, which can then be graphically represented to a person for analysis.
Abstract translation: 本公开涉及用于检测沿着信道的声学事件的方法，装置和技术。 光信号的不同波长沿沿着信道延伸的光纤链多路复用。 绞线具有沿其长度定位的换能器组，并且任何一个组中的所有换能器在不在应变下时反射调谐波长。 换能器反射的波长响应于应变而变化。 光信号处理设备从传感器组接收反射的光信号，并且为每组换能器确定由该组的换能器反射的光信号的波长与该组的调谐波长之间的差异。 差异对应于由该组换能器测量的事件的响度，其然后可以图形地表示给人以进行分析。
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