Hifi Engineering Inc.

Canada

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United States - USPTO
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Date
2022 May 1
2022 (YTD) 5
2021 6
2020 5
2019 7
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IPC Class
G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means 14
G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre 13
G01B 11/16 - Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge 12
G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis 12
G01B 9/02 - Interferometers 7
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Status
Pending 14
Registered / In Force 24
Found results for  patents

1.

METHODS OF WRAPPING OPTICAL FIBER AROUND A FLUID CONDUIT

      
Application Number 17429220
Status Pending
Filing Date 2020-02-05
First Publication Date 2022-05-12
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Dankers, Arne
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • G01B 11/16 - Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge
  • E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like

2.

METHOD AND SYSTEM FOR DETECTING EVENTS IN A CONDUIT

      
Application Number 17298942
Status Pending
Filing Date 2019-12-02
First Publication Date 2022-03-03
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Dankers, Arne
  • Jalilian, Seyed Ehsan

Abstract

There are described methods, systems, and computer-readable media for detecting events in a conduit. A first length of optical fiber, positioned alongside the conduit, is interrogated to obtain interferometric data from the first length of optical fiber. A second length of optical fiber, positioned alongside the conduit, is interrogated to obtain interferometric data from the second length of optical fiber. The interferometric data obtained from the first length of optical fiber is compared with the interferometric data obtained with the second length of optical fiber. Based on the comparison, whether an event has occurred in the conduit is determined.

IPC Classes  ?

  • G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
  • G01M 3/02 - Investigating fluid tightness of structures by using fluid or vacuum
  • F17D 5/06 - Preventing, monitoring, or locating loss using electric or acoustic means

3.

METHOD AND SYSTEM FOR TESTING A FIBER OPTIC MONITORING SYSTEM IN A CONDUIT

      
Application Number 17299304
Status Pending
Filing Date 2019-12-02
First Publication Date 2022-02-24
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • G01K 15/00 - Testing or calibrating of thermometers
  • G01B 11/16 - Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge
  • G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres
  • G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
  • G01D 18/00 - Testing or calibrating apparatus or arrangements provided for in groups

4.

OPTICAL INTERROGATOR FOR PERFORMING INTERFEROMETRY USING FIBER BRAGG GRATINGS

      
Application Number 17521052
Status Pending
Filing Date 2021-11-08
First Publication Date 2022-02-24
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Moore, Brian H.
  • Shakespeare, Walter Jeffrey
  • Wallace, Phillip William
  • Hoang, Viet
  • Henrikson, Chris
  • Sandhu, Ajay
  • Dumitru, Adrian
  • Clement, Thomas
  • Huang, Dongliang
  • Jalilian, Seyed Ehsan

Abstract

There is described a method for interrogating optical fiber comprising fiber Bragg gratings (“FBGs”), using an optical fiber interrogator. The method comprises (a) generating an initial light pulse from phase coherent light emitted from a light source, wherein the initial light pulse is generated by modulating the intensity of the light; (b) splitting the initial light pulse into a pair of light pulses; (c) causing one of the light pulses to be delayed relative to the other of the light pulses; (d) transmitting the light pulses along the optical fiber; (e) receiving reflections of the light pulses off the FBGs; and (f) determining whether an optical path length between the FBGs has changed from an interference pattern resulting from the reflections of the light pulses.

IPC Classes  ?

  • G01B 11/16 - Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge
  • G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
  • G01K 11/3206 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
  • G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis

5.

METHOD AND SYSTEM FOR DETECTING EVENTS IN A CONDUIT

      
Application Number 17299302
Status Pending
Filing Date 2019-12-02
First Publication Date 2022-02-17
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Dankers, Arne
  • Jalilian, Seyed Ehsan

Abstract

There are described methods, systems, and computer-readable media for detecting events in a conduit. Multiple lengths of optical fiber positioned alongside a conduit are used to detect a signal. For each length of optical fiber, interferometric data is obtained from the detected signal. The interferometric data obtained for one length of optical fiber is compared to the interferometric data obtained for one or more other lengths of optical fiber. Based on the comparison, it is determined whether the signal originated from the conduit.

IPC Classes  ?

  • G01M 3/38 - Investigating fluid tightness of structures by using light

6.

METHOD AND SYSTEM FOR DETECTING DYNAMIC STRAIN

      
Application Number 17243142
Status Pending
Filing Date 2021-04-28
First Publication Date 2021-08-12
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
  • E21B 47/135 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range using light waves, e.g. infrared or ultraviolet waves
  • G02B 6/02 - Optical fibre with cladding
  • F17D 5/00 - Protection or supervision of installations
  • F17C 13/02 - Special adaptations of indicating, measuring, or monitoring equipment
  • E21B 47/007 - Measuring stresses in a pipe string or casing

7.

OPTICAL FIBER ASSEMBLY

      
Application Number 17053041
Status Pending
Filing Date 2019-05-07
First Publication Date 2021-08-05
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Dankers, Arne
  • Jalilian, Seyed Ehsan

Abstract

There is described an optical fiber assembly comprising an optical fiber casing and optical fiber deployed within and fixed relative to the casing at multiple fixation points spaced along the casing. The optical fiber assembly may further comprise one or more weights attached within the casing to the optical fiber, for increasing a tension of the optical fiber between the multiple fixation points. The optical fiber casing may comprise flexible portions and rigid portions, with the optical fiber fixed to the flexible portions.

IPC Classes  ?

  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
  • G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
  • G02B 6/44 - Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables

8.

METHOD AND SYSTEM FOR DETECTING EVENTS IN A CONDUIT

      
Application Number 16961031
Status Pending
Filing Date 2019-01-08
First Publication Date 2021-06-03
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Adeyemi, Adekunle
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
  • G01K 11/3206 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
  • G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis

9.

METHOD AND SYSTEM FOR SIMULATING A LEAK IN A PIPELINE, AND AN OUTLET FOR COUPLING A CONDUIT TO A PIPELINE

      
Application Number 16921093
Status Pending
Filing Date 2020-07-06
First Publication Date 2021-03-25
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Jalilian, Seyed Ehsan
  • Pletnyov, Oleksiy

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.

IPC Classes  ?

  • F17D 5/02 - Preventing, monitoring, or locating loss
  • G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves

10.

METHODS AND SYSTEMS FOR DEPLOYING OPTICAL FIBER

      
Application Number 17094203
Status Pending
Filing Date 2020-11-10
First Publication Date 2021-02-25
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Gulewicz, Neil
  • Sokolowski, Robert
  • Pletnyov, Oleksiy
  • Merhi, Souheil
  • Cheuk, Philip
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • G02B 6/44 - Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables

11.

SYSTEM AND METHOD FOR LOCATING AN AREA OF INTEREST IN A CONDUIT

      
Application Number 17046539
Status Pending
Filing Date 2019-04-04
First Publication Date 2021-02-04
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Dankers, Arne
  • Jalilian, Seyed Ehsan

Abstract

There is described a method of locating an area of interest in a conduit, comprising: measuring multiple acoustic signals at multiple locations along the conduit; for each acoustic signal, determining its autocorrelation; and applying a relationship to the determined autocorrelations to estimate a location of the area of interest, wherein the relationship is between autocorrelations of acoustic signals measured in a modelled conduit and modelled areas of interest in the modelled conduit, wherein it is assumed that acoustic signals propagating along the modelled conduit reflect from at least one point in the modelled conduit.

IPC Classes  ?

  • G01M 3/24 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
  • G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
  • E21B 47/107 - Locating fluid leaks, intrusions or movements using acoustic means
  • E21B 47/117 - Detecting leaks, e.g. from tubing, by pressure testing

12.

Device and system for detecting dynamic strain

      
Application Number 16679050
Grant Number 11002620
Status In Force
Filing Date 2019-11-08
First Publication Date 2020-08-06
Grant Date 2021-05-11
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • G01B 9/02 - Interferometers
  • G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
  • G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre

13.

Method and system for determining whether an event has occurred from dynamic strain measurements

      
Application Number 16805277
Grant Number 11085758
Status In Force
Filing Date 2020-02-28
First Publication Date 2020-06-25
Grant Date 2021-08-10
Owner Hifi Engineering, Inc. (Canada)
Inventor
  • Jalilian, Seyed Ehsan
  • Hull, John
  • Huang, Daniel
  • Adeyemi, Adekunle

Abstract

Methods, systems, and techniques for determining whether an event has occurred from dynamic strain measurements involve determining, using a processor, at least one event parameter from a signal representing the dynamic strain measurements, and then having the processor use the at least one event parameter to determine whether the event has occurred. The at least one event parameter is any one or more of a measure of magnitude of the signal, frequency centroid of the signal, filtered baseline of the signal, harmonic power of the signal, and time-integrated spectrum flux of the signal.

IPC Classes  ?

  • G01B 11/16 - Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge
  • G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
  • G01M 3/00 - Investigating fluid tightness of structures
  • G01M 3/24 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
  • G01M 3/38 - Investigating fluid tightness of structures by using light
  • G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
  • G01K 11/3206 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
  • G01B 21/32 - Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the other groups of this subclass for measuring the deformation in a solid
  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means

14.

METHODS AND SYSTEMS FOR PROVIDING ACCESS TO INTERFEROMETRIC SYSTEM DATA

      
Application Number 16634722
Status Pending
Filing Date 2018-07-27
First Publication Date 2020-06-25
Owner HIFI ENGINEERING INC. (Canada)
Inventor
  • Adeyemi, Adekunle
  • Jalilian, Seyed Ehsan

Abstract

A computer-implemented method of providing access to interferometric system data stored in a data repository. A query that includes a data parameter identifier is received. The data repository is accessed and the interferometric system data is stored in the data repository using a data structure that has one or more data parameter arrays and one or more corresponding data group members. Each data group member includes one or more data arrays each associated with a data parameter in the corresponding data parameter array. Using the data parameter identifier, one or more target data parameters are determined from among the one or more data parameter arrays. One or more target data arrays that correspond to the one or more target data parameters are determined from among the one or more data arrays. The interferometric system data, which is in the one or more target data arrays, is extracted.

IPC Classes  ?

  • G01V 9/00 - Prospecting or detecting by methods not provided for in groups
  • E21B 47/10 - Locating fluid leaks, intrusions or movements
  • F17D 3/01 - Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
  • G01V 8/24 - Detecting, e.g. by using light barriers using multiple transmitters or receivers using optical fibres

15.

METHOD OF MAKING AN ACOUSTIC SENSOR

      
Application Number 16607924
Status Pending
Filing Date 2018-04-25
First Publication Date 2020-03-26
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Dankers, Arne
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • G01V 1/18 - Receiving elements, e.g. seismometer, geophone
  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
  • G01V 1/40 - Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging

16.

Methods and systems for deploying optical fiber

      
Application Number 16485917
Grant Number 10838162
Status In Force
Filing Date 2018-02-09
First Publication Date 2020-02-20
Grant Date 2020-11-17
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Gulewicz, Neil
  • Sokolowski, Robert
  • Pletnyov, Oleksiy
  • Merhi, Souheil
  • Cheuk, Philip
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • G02B 6/44 - Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables

17.

Optical interrogator for performing interferometry using Bragg gratings

      
Application Number 16523864
Grant Number 11054288
Status In Force
Filing Date 2019-07-26
First Publication Date 2019-11-14
Grant Date 2021-07-06
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Moore, Brian H.
  • Shakespeare, Walter Jeffrey
  • Wallace, Phillip William
  • Hoang, Viet
  • Clement, Tom

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.

IPC Classes  ?

  • G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
  • G01B 11/16 - Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge
  • G01B 9/02 - Interferometers
  • G01D 18/00 - Testing or calibrating apparatus or arrangements provided for in groups

18.

Method and system for detecting dynamic strain

      
Application Number 16271623
Grant Number 11313744
Status In Force
Filing Date 2019-02-08
First Publication Date 2019-11-07
Grant Date 2022-04-26
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • G01B 9/02 - Interferometers
  • G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
  • E21B 47/007 - Measuring stresses in a pipe string or casing
  • E21B 47/135 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. of radio frequency range using light waves, e.g. infrared or ultraviolet waves
  • G02B 6/02 - Optical fibre with cladding
  • F17D 5/00 - Protection or supervision of installations
  • F17C 13/02 - Special adaptations of indicating, measuring, or monitoring equipment

19.

METHOD OF ESTIMATING FLOWRATE IN A PIPELINE

      
Application Number 16310375
Status Pending
Filing Date 2017-06-14
First Publication Date 2019-10-31
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Jalilian, Seyed Ehsan
  • Huang, Dongliang
  • Leung, Henry
  • Ma, King Fai

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.

IPC Classes  ?

  • G01F 1/66 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by measuring frequency, phase shift, or propagation time of electromagnetic or other waves, e.g. ultrasonic flowmeters
  • G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves
  • G06N 3/08 - Learning methods

20.

Methods and systems using optical fiber interferometry

      
Application Number 16358066
Grant Number 11243122
Status In Force
Filing Date 2019-03-19
First Publication Date 2019-07-11
Grant Date 2022-02-08
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres
  • G01K 1/20 - Compensating for effects of temperature changes other than those to be measured, e.g. changes in ambient temperature
  • G01B 11/16 - Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge
  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
  • G01N 25/16 - Investigating or analysing materials by the use of thermal means by investigating thermal coefficient of expansion
  • G01N 21/45 - Refractivity; Phase-affecting properties, e.g. optical path length using Schlieren methods

21.

Method and system for detecting whether an acoustic event has occurred along a fluid conduit

      
Application Number 16024513
Grant Number 10859212
Status In Force
Filing Date 2018-06-29
First Publication Date 2019-05-09
Grant Date 2020-12-08
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Jalilian, Seyed Ehsan
  • Dankers, Arne
  • Westwick, David

Abstract

Methods, systems, and techniques for determining whether an acoustic event has occurred along a fluid conduit having acoustic sensors positioned therealong. The method uses a processor to, for each of the sensors, determine a predicted acoustic signal using one or more past acoustic signals measured prior to measuring a measured acoustic signal using the sensor; determine a prediction error between the measured acoustic signal and the predicted acoustic signal; from the prediction error, determine a power estimate of an acoustic source located along a longitudinal segment of the fluid conduit overlapping the sensor; and determine whether the power estimate of the acoustic source exceeds an event threshold for the sensor. When the power estimate of at least one of the acoustic sources exceeds the event threshold, the processor attributes the acoustic event to one of the sensors for which the power estimate of the acoustic source exceeds the event threshold.

IPC Classes  ?

  • F17D 5/06 - Preventing, monitoring, or locating loss using electric or acoustic means
  • G01M 3/24 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
  • G01M 3/38 - Investigating fluid tightness of structures by using light
  • E21B 47/26 - Storing data down-hole, e.g. in a memory or on a record carrier
  • E21B 47/107 - Locating fluid leaks, intrusions or movements using acoustic means
  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
  • G01N 29/14 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques

22.

Method and system for determining whether an event has occurred from dynamic strain measurements

      
Application Number 16081850
Grant Number 10584960
Status In Force
Filing Date 2016-03-01
First Publication Date 2019-03-07
Grant Date 2020-03-10
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Jalilian, Seyed Ehsan
  • Hull, John
  • Huang, Daniel
  • Adeyemi, Adekunle

Abstract

Methods, systems, and techniques for determining whether an event has occurred from dynamic strain measurements involve determining, using a processor, at least one event parameter from a signal representing the dynamic strain measurements, and then having the processor use the at least one event parameter to determine whether the event has occurred. The at least one event parameter is any one or more of a measure of magnitude of the signal, frequency centroid of the signal, filtered baseline of the signal, harmonic power of the signal, and time-integrated spectrum flux of the signal.

IPC Classes  ?

  • G01B 11/16 - Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge
  • G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
  • G01M 3/00 - Investigating fluid tightness of structures
  • G01M 3/24 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
  • G01M 3/38 - Investigating fluid tightness of structures by using light
  • G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
  • G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres
  • G01B 21/32 - Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the other groups of this subclass for measuring the deformation in a solid
  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means

23.

Method and system for non-intrusive pipeline testing

      
Application Number 16063659
Grant Number 10746208
Status In Force
Filing Date 2016-12-16
First Publication Date 2019-01-03
Grant Date 2020-08-18
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Logan, Derek
  • Hull, John
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • F16B 2/06 - Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
  • G01N 29/00 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
  • G01M 3/38 - Investigating fluid tightness of structures by using light
  • G01M 5/00 - Investigating the elasticity of structures, e.g. deflection of bridges or aircraft wings
  • G01M 11/08 - Testing mechanical properties
  • G01N 29/24 - Probes
  • G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
  • G01B 11/16 - Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge
  • G02B 6/46 - Processes or apparatus adapted for installing optical fibres or optical cables
  • G02B 6/293 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
  • G02B 6/34 - Optical coupling means utilising prism or grating

24.

Optical interrogator for performing interferometry using fiber Bragg gratings

      
Application Number 15868766
Grant Number 11199393
Status In Force
Filing Date 2018-01-11
First Publication Date 2018-12-13
Grant Date 2021-12-14
Owner HiFi Engineering Inc. (Canada)
Inventor
  • Moore, Brian H.
  • Shakespeare, Walter Jeffrey
  • Wallace, Phillip William
  • Hoang, Viet
  • Henrikson, Chris
  • Sandhu, Ajay
  • Dumitru, Adrian
  • Clement, Thomas
  • Huang, Dongliang
  • Jalilian, Seyed Ehsan

Abstract

There is described a method for interrogating optical fiber comprising fiber Bragg gratings (“FBGs”), using an optical fiber interrogator. The method comprises (a) generating an initial light pulse from phase coherent light emitted from a light source, wherein the initial light pulse is generated by modulating the intensity of the light; (b) splitting the initial light pulse into a pair of light pulses; (c) causing one of the light pulses to be delayed relative to the other of the light pulses; (d) transmitting the light pulses along the optical fiber; (e) receiving reflections of the light pulses off the FBGs; and (f) determining whether an optical path length between the FBGs has changed from an interference pattern resulting from the reflections of the light pulses.

IPC Classes  ?

  • G01B 11/16 - Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge
  • G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
  • G01K 11/3206 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
  • G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis

25.

Method and system for simulating a leak in a pipeline, and an outlet for coupling a conduit to a pipeline

      
Application Number 15773965
Grant Number 10704740
Status In Force
Filing Date 2016-11-03
First Publication Date 2018-11-08
Grant Date 2020-07-07
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Jalilian, Seyed Ehsan
  • Pletnyov, Oleksiy

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.

IPC Classes  ?

  • F17D 5/02 - Preventing, monitoring, or locating loss
  • G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves

26.

Optical interrogator for performing interferometry using fiber Bragg gratings

      
Application Number 15532963
Grant Number 10416005
Status In Force
Filing Date 2015-12-04
First Publication Date 2018-09-20
Grant Date 2019-09-17
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Moore, Brian H.
  • Shakespeare, Walter Jeffrey
  • Wallace, Phillip William
  • Hoang, Viet
  • Clement, Tom

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.

IPC Classes  ?

  • G01B 9/02 - Interferometers
  • G01B 11/16 - Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge
  • G01D 18/00 - Testing or calibrating apparatus or arrangements provided for in groups
  • G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre

27.

Method and system for determining the distance to an acoustically reflective object in a conduit

      
Application Number 15753528
Grant Number 10725174
Status In Force
Filing Date 2016-08-22
First Publication Date 2018-08-16
Grant Date 2020-07-28
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Jalilian, Seyed Ehsan
  • Dankers, Arne

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.

IPC Classes  ?

  • G01S 15/00 - Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
  • G01S 15/08 - Systems for measuring distance only
  • G01S 7/521 - Constructional features
  • F17D 3/01 - Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
  • G01S 7/536 - Extracting wanted echo signals
  • E21B 47/04 - Measuring depth or liquid level
  • E21B 47/09 - Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes
  • F17D 5/06 - Preventing, monitoring, or locating loss using electric or acoustic means
  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
  • G01S 7/54 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group with receivers spaced apart

28.

Clamp and a method of clamping

      
Application Number 15739336
Grant Number 10422365
Status In Force
Filing Date 2016-06-27
First Publication Date 2018-07-26
Grant Date 2019-09-24
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Jalilian, Seyed Ehsan
  • Logan, Derek

Abstract

A clamp for clamping optical fiber to a tube. The clamp has a body portion coupled at one end to a first arm and at an opposing end to a second arm, and a resilient portion to permit the clamp to elastically deform from a closed state in which the clamp is fastened around the tube to an open state in which the clamp is radially moveable off the tube. At least one of the body portion, the first arm and the second arm has a clamping surface to clamp a portion of the optical fiber against the tube when the clamp is fastened around the tube, and a clamping mechanism operable to extend at least part of the clamping surface towards the tube when the clamp is secured to the tube to increase a clamping force applied by the clamping surface.

IPC Classes  ?

  • F16B 2/24 - Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material of metal
  • F16B 2/06 - Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
  • F17D 5/00 - Protection or supervision of installations
  • G01B 9/02 - Interferometers
  • G02B 6/46 - Processes or apparatus adapted for installing optical fibres or optical cables
  • G01B 11/16 - Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge
  • G02B 6/00 - Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
  • F16L 3/06 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets partly surrounding the pipes, cables or protective tubing with supports for wires
  • F17D 5/06 - Preventing, monitoring, or locating loss using electric or acoustic means

29.

Fiber optic sensor shaped for a particular frequency response and method of manufacturing same

      
Application Number 15739651
Grant Number 10260937
Status In Force
Filing Date 2016-06-27
First Publication Date 2018-06-14
Grant Date 2019-04-16
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Dankers, Arne
  • Jalilian, Seyed Ehsan

Abstract

Sensor shaped to have a frequency response that has less spectral fading than a sensor with a rectangular wrapping pattern, and methods for making such sensors, are disclosed. One such method includes selecting a wrapping pattern comprising multiple layers in which a top layer has a different length than a bottom layer and where the bottom layer is adjacent a mandrel. The method further includes wrapping optical fiber around the mandrel according to the wrapping pattern.

IPC Classes  ?

  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
  • G01D 5/26 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light
  • G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
  • G02B 6/02 - Optical fibre with cladding

30.

Methods and systems using optical fiber interferometry

      
Application Number 15575981
Grant Number 10281341
Status In Force
Filing Date 2016-05-19
First Publication Date 2018-05-31
Grant Date 2019-05-07
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
  • G01K 1/20 - Compensating for effects of temperature changes other than those to be measured, e.g. changes in ambient temperature
  • G01B 11/16 - Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge
  • G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres
  • G01N 21/45 - Refractivity; Phase-affecting properties, e.g. optical path length using Schlieren methods
  • G01N 25/16 - Investigating or analysing materials by the use of thermal means by investigating thermal coefficient of expansion

31.

Device and system for detecting dynamic strain

      
Application Number 15323932
Grant Number 10473541
Status In Force
Filing Date 2014-07-04
First Publication Date 2017-06-01
Grant Date 2019-11-12
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • G01B 9/02 - Interferometers
  • G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
  • G01D 5/353 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using optical means, i.e. using infra-red, visible or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre

32.

Method and system for detecting dynamic strain

      
Application Number 15323937
Grant Number 10234345
Status In Force
Filing Date 2014-07-04
First Publication Date 2017-06-01
Grant Date 2019-03-19
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • G01B 9/02 - Interferometers
  • G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
  • F17C 13/02 - Special adaptations of indicating, measuring, or monitoring equipment
  • F17D 5/00 - Protection or supervision of installations
  • G02B 6/02 - Optical fibre with cladding
  • E21B 47/00 - Survey of boreholes or wells
  • E21B 47/12 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling

33.

Sound baffle device and system for detecting acoustic signals

      
Application Number 15105386
Grant Number 10428644
Status In Force
Filing Date 2014-12-15
First Publication Date 2016-10-27
Grant Date 2019-10-01
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Gulewicz, Neil
  • Jalilian, Seyed Ehsan

Abstract

A sound baffle device for use with an acoustic sensor deployed in a housing by a deployment line comprises a radially extending baffle plate and an affixing mechanism for affixing the baffle plate to the deployment line. The baffle plate is configured to reduce acoustic transmission between a first zone of the housing on one side of the baffle plate and a second zone of the housing on an opposite side of the baffle plate.

IPC Classes  ?

  • E21B 47/10 - Locating fluid leaks, intrusions or movements
  • E21B 41/00 - Equipment or details not covered by groups
  • G10K 11/00 - Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general

34.

Apparatus for detecting acoustic signals in a housing

      
Application Number 15103750
Grant Number 10215017
Status In Force
Filing Date 2014-12-10
First Publication Date 2016-10-20
Grant Date 2019-02-26
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Jalilian, Seyed Ehsan

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.

IPC Classes  ?

  • E21B 47/00 - Survey of boreholes or wells
  • E21B 47/10 - Locating fluid leaks, intrusions or movements
  • G01H 9/00 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
  • G01M 3/04 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
  • G01M 3/16 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
  • G01M 3/24 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations

35.

Method and system for determining relative depth of an acoustic event within a wellbore

      
Application Number 14370198
Grant Number 09605537
Status In Force
Filing Date 2012-01-06
First Publication Date 2015-02-05
Grant Date 2017-03-28
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Cheuk, Philip
  • Jalilian, Seyed Ehsan

Abstract

The present disclosure is directed at a method and system for determining relative depth of an acoustic event within a wellbore. The method includes obtaining two acoustic signals at two different and known depths in the wellbore, in which each of the acoustic signals includes the acoustic event; dividing each of the acoustic signals into windows; determining cross-correlations of pairs of the windows, in which each of the pairs includes one window from one of the acoustic signals and another window from the other of the acoustic signals that at least partially overlap each other in time; and determining the relative depth of the acoustic event relative to the two known depths from the cross-correlations. The acoustic event may represent, for example, fluid flowing from formation into the wellbore (or vice-versa) or fluid flowing across any casing or tubing located within the wellbore.

IPC Classes  ?

  • E21B 47/18 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid
  • E21B 47/04 - Measuring depth or liquid level
  • E21B 47/14 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves

36.

Loudness based method and system for determining relative location of an acoustic event along a channel

      
Application Number 13958358
Grant Number 09606250
Status In Force
Filing Date 2013-08-02
First Publication Date 2014-02-06
Grant Date 2017-03-28
Owner Hifi Engineering Inc. (Canada)
Inventor
  • Hull, John
  • Jalilian, Seyed Ehsan
  • Cheuk, Philip

Abstract

A method for determining relative location of an acoustic event along a channel such as a wellbore includes obtaining two acoustic signals at are obtained at two different and known depths in the wellbore, dividing the acoustic signals into windows, and determining the relative loudnesses of pairs of the windows. The power of the acoustic signals may be used as a proxy for the loudness of the acoustic event, and this determination can be made in the time or frequency domains. The relative depth of the acoustic event can then be determined relative to the two known depths from the relative loudnesses. The acoustic event may be, for example, casing vent flow, gas migration, a leak along a pipeline, or sounds observed in an observation well from a nearby well in which fracking is being performed.

IPC Classes  ?

  • G01N 29/07 - Analysing solids by measuring propagation velocity or propagation time of acoustic waves
  • G01N 29/11 - Analysing solids by measuring attenuation of acoustic waves
  • G01N 29/14 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
  • G01V 1/00 - Seismology; Seismic or acoustic prospecting or detecting
  • G01S 5/18 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
  • G01N 29/36 - Detecting the response signal
  • E21B 47/10 - Locating fluid leaks, intrusions or movements
  • G01V 1/28 - Processing seismic data, e.g. analysis, for interpretation, for correction
  • G01N 29/44 - Processing the detected response signal

37.

Method for detecting and locating fluid ingress in a wellbore

      
Application Number 13017620
Grant Number 09057254
Status In Force
Filing Date 2011-01-31
First Publication Date 2011-08-04
Grant Date 2015-06-16
Owner Hifi Engineering Inc. (Canada)
Inventor Hull, John

Abstract

A method for detecting fluid ingress in a wellbore. An acoustic sensor is placed along a wellbore. The acoustic sensor is adapted to sense individual acoustic signals from a plurality of corresponding locations along the wellbore. The individual acoustic signals are analyzed to determine if there exists a common acoustic component in acoustic signals generated from proximate locations in the 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. The acoustic sensor may be a fiber optic cable extending substantially the length of the wellbore, or alternatively a plurality of microphones situated at various locations along the wellbore.

IPC Classes  ?

  • E21B 47/10 - Locating fluid leaks, intrusions or movements

38.

Method and apparatus for fluid migration profiling

      
Application Number 12438479
Grant Number 08326540
Status In Force
Filing Date 2008-02-12
First Publication Date 2009-12-31
Grant Date 2012-12-04
Owner HiFi Engineering, Inc. (Canada)
Inventor
  • Hull, John
  • Kramer, Hermann

Abstract

The method for obtaining a fluid migration profile for a wellbore, including the steps of obtaining a static profile for a logged region of the wellbore, obtaining a dynamic profile for the logged region of the wellbore, digitally filtering the dynamic profile to remove frequency elements represented in the static profile, to provide a fluid migration profile, and storing the fluid migration profile on a computer-readable memory.

IPC Classes  ?

  • G01V 1/40 - Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
  • G01V 3/00 - Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
  • G01V 5/00 - Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity