-
公开(公告)号：US12196635B2
公开(公告)日：2025-01-14
申请号：US18188967
申请日：2023-03-23
Applicant: Hifi Engineering Inc.
Inventor： John Hull , Seyed Ehsan Jalilian
IPC: G01L1/24 , E21B47/007 , E21B47/135 , F17C13/02 , F17D5/00 , G02B6/02
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.
-
公开(公告)号：US20240011594A1
公开(公告)日：2024-01-11
申请号：US18054496
申请日：2022-11-10
Applicant: HIFI ENGINEERING INC.
Inventor： Seyed Ehsan JALILIAN , Mehri OWJIMEHR
Abstract: An object moving along a conduit having multiple channels is tracked. Each channel defines a portion of a length of the conduit. For each channel, acoustic data, generated from one or more acoustic signals detected at the channel in response to movement of the object along the conduit, is generated. For at least one channel, the acoustic data obtained for the at least one channel is cross-correlated with the acoustic data obtained for at least one other one of the channels. Based on the cross-correlating, a position of the object within the conduit is determined.
-
公开(公告)号：US11662489B2
公开(公告)日：2023-05-30
申请号：US16607924
申请日：2018-04-25
Applicant: Hifi Engineering Inc.
Inventor： Arne Dankers , Seyed Ehsan Jalilian
CPC classification number: G01V1/18 , G01H9/004 , G01V1/20 , G01V1/40 , H05K1/0274
Abstract: There is described a method of making an acoustic sensor having a frequency response approximating a desired frequency response. The method comprises wrapping optical fiber around a core according to a wrapping pattern. The wrapping pattern is determined from an impulse response of the acoustic sensor. The impulse response is determined from the desired frequency response of the acoustic sensor.
-
公开(公告)号：US20210164812A1
公开(公告)日：2021-06-03
申请号：US16961031
申请日：2019-01-08
Applicant: Hifi Engineering Inc.
Inventor： Adekunle Adeyemi , Seyed Ehsan Jalilian
IPC: G01D5/353 , G01H9/00 , G01K11/3206 , G01L1/24
Abstract: There is provided a system for determining multiple baselines for detecting events in a conduit. The system comprises an optical fiber interrogator for interrogating optical fiber; and one or more processors communicative with the optical fiber interrogator and memory having stored thereon computer program code configured, when executed by the one or more processors, to cause the one or more processors to perform a method. The method comprises, for each of multiple channels of the conduit, each channel comprising a portion of the conduit: obtaining phase data for the channel, the phase data being obtained by causing the optical fiber interrogator to interrogate optical fiber positioned alongside the conduit; and determining one or more baselines from the phase data.
-
公开(公告)号：US20200249107A1
公开(公告)日：2020-08-06
申请号：US16679050
申请日：2019-11-08
Applicant: Hifi Engineering Inc.
Inventor： John Hull , Seyed Ehsan Jalilian
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.
-
Patent Agency Ranking
公开(公告)号：US20190331513A1
公开(公告)日：2019-10-31
申请号：US16310375
申请日：2017-06-14
Applicant: Hifi Engineering Inc.
Inventor： Seyed Ehsan Jalilian , Dongliang Huang , Henry Leung , King Fai Ma
Abstract: There is provided a method of estimating flowrate in a pipeline based on acoustic behaviour of the pipe. First acoustic data is measured from the pipeline. A flowrate of the fluid in the pipeline is then estimated. The estimation is based on the first acoustic data and based on a correlation established between second acoustic data and corresponding flowrate data from an experimental pipeline. The correlation is established by a machine learning process (which may include the use of an artificial neural network, such as an autoencoder). The second acoustic data and corresponding flowrate data are used as inputs to the machine learning process.
-
公开(公告)号：US10416005B2
公开(公告)日：2019-09-17
申请号：US15532963
申请日：2015-12-04
Applicant: Hifi Engineering Inc.
Inventor： Brian H. Moore , Walter Jeffrey Shakespeare , Phillip William Wallace , Viet Hoang , Tom Clement
Abstract: An optical fiber interrogator for interrogating optical fiber that includes fiber Bragg gratings (“FBGs”). The interrogator includes a light source operable to emit phase coherent light, amplitude modulation circuitry optically coupled to the light source and operable to generate pulses from the light, and control circuitry communicatively coupled to the amplitude modulation circuitry that is configured to perform a method for interrogating the optical fiber. The method includes generating a pair of light pulses by using the amplitude modulation circuitry to modulate light output by the light source without splitting the light.
-
公开(公告)号：US10281341B2
公开(公告)日：2019-05-07
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.
-
9.发明申请公开(公告)号：US20180320827A1
公开(公告)日：2018-11-08
申请号：US15773965
申请日：2016-11-03
Applicant: Hifi Engineering Inc.
Inventor： John Hull , Seyed Ehsan Jalilian , Oleksiy Pletnyov
CPC classification number: F17D5/02 , G01M3/2815
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.
-
公开(公告)号：US20110188346A1
公开(公告)日：2011-08-04
申请号：US13017620
申请日：2011-01-31
Applicant: John HULL
Inventor： John HULL
IPC: G01V1/50
CPC classification number: E21B47/101
Abstract: A method for detecting fluid ingress in a wellbore, and if detected, obtaining an indication of where along said wellbore said fluid ingress is occurring. Acoustic sensing means, adapted to sense individual acoustic signals from a plurality of corresponding locations along said wellbore, are analyzed to determine if there exists a common acoustic component in acoustic signals generated from proximate locations in said wellbore. If so, the acoustic signal having the common acoustic component which appears earliest in phase, by virtue of such acoustic signal's corresponding location in the wellbore, determines the location in the wellbore of likely fluid ingress. In a preferred embodiment the acoustic sensing means comprises a fibre optic cable extending substantially the length of the wellbore, or alternatively a plurality of microphones situated at various locations along the wellbore comprising substantially the length of the wellbore.
Abstract translation: 一种用于检测井眼中的流体入口的方法，并且如果检测到的话，获得所述流体入口沿着所述井筒的位置的指示。 分析适于从沿着所述井眼的多个对应位置感测各个声学信号的声学感测装置，以确定在所述井眼中从最近位置产生的声学信号中是否存在公共声学分量。 如果是这样，具有最早同相出现的共同声学分量的声学信号由于这种声学信号在井眼中的对应位置确定井眼中可能的流体入口的位置。 在优选实施例中，声学感测装置包括基本上延伸的井眼的长度的光纤电缆，或者替代地，沿着井眼位于沿着井眼的基本上长度的多个位置处的多个麦克风。
-
-
-
-
-
-
-
-
-
Search Results
85
records
(took 0.025 seconds)
