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公开(公告)号：US20220334020A1
公开(公告)日：2022-10-20
申请号：US17634525
申请日：2020-08-10
Applicant: HIFI ENGINEERING INC.
Inventor： Niloufar Ghazavi , Arne Dankers , Seyed Ehsan Jalilian
Abstract: Using at least one sensor positioned to monitor a fluid conduit, an acoustic event is detected. A speed of sound of the acoustic event is determined. The speed of sound of the acoustic event is compared to a baseline speed of sound. Based on the comparison, whether or not a leak has occurred in the fluid conduit may be determined.
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72.发明授权公开(公告)号：US11441740B2
公开(公告)日：2022-09-13
申请号：US16921093
申请日：2020-07-06
Applicant: Hifi Engineering Inc.
Inventor： John Hull , Seyed Ehsan Jalilian , Oleksiy Pletnyov
Abstract: Various embodiments provide a method of simulating a leak in a pipeline. The method includes: receiving a fluid stream from a fluid supply; and outputting the received fluid stream through an outlet such that the received fluid stream hits an outer surface of the pipeline at a location opposite the outlet such that a vibration is caused in the pipeline. Some other embodiments provide a corresponding system for simulating a leak in a pipeline, and a corresponding outlet for coupling a conduit to a pipeline.
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公开(公告)号：US20220146253A1
公开(公告)日：2022-05-12
申请号：US17429220
申请日：2020-02-05
Applicant: Hifi Engineering Inc.
Inventor： Arne Dankers , Seyed Ehsan Jalilian
Abstract: A method of wrapping optical fiber around a fluid conduit. The optical fiber is wrapped at least partially around the conduit. The optical fiber is secured relative to the conduit at one or more securing locations, thereby defining a sequence of multiple optical fiber portions. Each optical fiber portion comprises a portion of the optical fiber. Each securing location delimits a given optical fiber portion from the subsequent optical fiber portion in the sequence of optical fiber portions. A direction of wrapping of each consecutive optical fiber portion in the sequence of optical fiber portions may be alternated between a clockwise direction and a counter-clockwise direction.
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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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79.发明申请公开(公告)号：US20180231658A1
公开(公告)日：2018-08-16
申请号：US15753528
申请日：2016-08-22
Applicant: Hifi Engineering Inc.
Inventor： Seyed Ehsan JALILIAN , Arne DANKERS
Abstract: Methods and systems for estimating a distance between an acoustic sensor and an acoustic reflector in a conduit are disclosed. One such method includes using the acoustic sensor to measure a combined acoustic signal that comprises an originating acoustic signal propagating along the conduit and an echo signal. The echo signal is generated by the originating acoustic signal reflecting off the acoustic reflector after propagating past the acoustic sensor. A frequency domain representation of the combined acoustic signal is determined and the echo signal is identified by identifying in the frequency domain representation periodic oscillations having a peak-to-peak difference between 0.75 Hz and 1500 Hz. The distance between the acoustic sensor and the acoustic reflector is determined from the velocity of the echo signal and a time required for the echo signal to propagate between the acoustic sensor and the acoustic reflector.
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公开(公告)号：US20180149528A1
公开(公告)日：2018-05-31
申请号：US15575981
申请日：2016-05-19
Applicant: Hifi Engineering Inc.
Inventor： John HULL , Seyed Ehsan JALILIAN
Abstract: Described are methods and systems using optical fiber interferometry to sense interference causing events in a region of interest and differentiate between a strain event and a thermal event. Other methods and systems relate to the use of optical fiber interferometry for determining temperature offset in a region of interest and using the determined temperature offset for determining temperature in the region of interest.
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