GB201408132D0 - Improvements in fibre optic distributed sensing - Google Patents

Improvements in fibre optic distributed sensing

Info

Publication number
GB201408132D0
GB201408132D0 GBGB1408132.7A GB201408132A GB201408132D0 GB 201408132 D0 GB201408132 D0 GB 201408132D0 GB 201408132 A GB201408132 A GB 201408132A GB 201408132 D0 GB201408132 D0 GB 201408132D0
Authority
GB
United Kingdom
Prior art keywords
fibre optic
distributed sensing
optic distributed
sensing
fibre
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
GBGB1408132.7A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Optasense Holdings Ltd
Original Assignee
Optasense Holdings Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Optasense Holdings Ltd filed Critical Optasense Holdings Ltd
Priority to GBGB1408132.7A priority Critical patent/GB201408132D0/en
Publication of GB201408132D0 publication Critical patent/GB201408132D0/en
Priority to PCT/GB2015/051360 priority patent/WO2015170116A1/en
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—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
    • G01D5/26—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/353—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet 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
    • G01D5/35338—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet 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 using other arrangements than interferometer arrangements
    • G01D5/35354—Sensor working in reflection
    • G01D5/35358—Sensor working in reflection using backscattering to detect the measured quantity
    • G01D5/35361—Sensor working in reflection using backscattering to detect the measured quantity using elastic backscattering to detect the measured quantity, e.g. using Rayleigh backscattering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
GBGB1408132.7A 2014-05-08 2014-05-08 Improvements in fibre optic distributed sensing Ceased GB201408132D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GBGB1408132.7A GB201408132D0 (en) 2014-05-08 2014-05-08 Improvements in fibre optic distributed sensing
PCT/GB2015/051360 WO2015170116A1 (en) 2014-05-08 2015-05-08 Improvements in fibre optic distributed sensing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB1408132.7A GB201408132D0 (en) 2014-05-08 2014-05-08 Improvements in fibre optic distributed sensing

Publications (1)

Publication Number Publication Date
GB201408132D0 true GB201408132D0 (en) 2014-06-25

Family

ID=51032419

Family Applications (1)

Application Number Title Priority Date Filing Date
GBGB1408132.7A Ceased GB201408132D0 (en) 2014-05-08 2014-05-08 Improvements in fibre optic distributed sensing

Country Status (2)

Country Link
GB (1) GB201408132D0 (en)
WO (1) WO2015170116A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107290043A (en) * 2017-06-15 2017-10-24 贵州电网有限责任公司电力科学研究院 A kind of transmission line of electricity vibration number distribution on line formula monitoring method

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112018070577A2 (en) 2016-04-07 2019-02-12 Bp Exploration Operating Company Limited detection of downhole sand ingress locations
WO2017174750A2 (en) 2016-04-07 2017-10-12 Bp Exploration Operating Company Limited Detecting downhole sand ingress locations
GB201618036D0 (en) 2016-10-25 2016-12-07 Fotech Solutions Limited Distributed optical temperature sensor
GB2560522B (en) 2017-03-13 2022-03-16 Aiq Dienstleistungen Ug Haftungsbeschraenkt Dynamic sensitivity distributed acoustic sensing
EA038373B1 (en) 2017-03-31 2021-08-17 Бп Эксплорейшн Оперейтинг Компани Лимитед Well and overburden monitoring using distributed acoustic sensors
CA3073623A1 (en) 2017-08-23 2019-02-28 Bp Exploration Operating Company Limited Detecting downhole sand ingress locations
US11333636B2 (en) 2017-10-11 2022-05-17 Bp Exploration Operating Company Limited Detecting events using acoustic frequency domain features
CN107894249A (en) * 2017-12-08 2018-04-10 北京航天控制仪器研究所 A kind of demarcation of fiber Bragg grating (FBG) demodulator, calibrating installation
KR102040598B1 (en) * 2018-05-16 2019-11-27 한국표준과학연구원 Fiber optic BOCDA sensor using phase code modulation of pump and probe light with time difference
EP4234881A3 (en) 2018-11-29 2023-10-18 BP Exploration Operating Company Limited Das data processing to identify fluid inflow locations and fluid type
GB201820331D0 (en) 2018-12-13 2019-01-30 Bp Exploration Operating Co Ltd Distributed acoustic sensing autocalibration
EP4045766A1 (en) 2019-10-17 2022-08-24 Lytt Limited Fluid inflow characterization using hybrid das/dts measurements
WO2021073740A1 (en) 2019-10-17 2021-04-22 Lytt Limited Inflow detection using dts features
WO2021093974A1 (en) 2019-11-15 2021-05-20 Lytt Limited Systems and methods for draw down improvements across wellbores
EP4165284B1 (en) 2020-06-11 2024-08-07 Lytt Limited Systems and methods for subterranean fluid flow characterization
EP4168647A1 (en) 2020-06-18 2023-04-26 Lytt Limited Event model training using in situ data

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2442745B (en) * 2006-10-13 2011-04-06 At & T Corp Method and apparatus for acoustic sensing using multiple optical pulses
US7859654B2 (en) * 2008-07-17 2010-12-28 Schlumberger Technology Corporation Frequency-scanned optical time domain reflectometry
GB2489749B (en) * 2011-04-08 2016-01-20 Optasense Holdings Ltd Fibre optic distributed sensing
GB2515564A (en) * 2013-06-28 2014-12-31 Optasense Holdings Ltd Improvements in fibre optic distributed sensing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107290043A (en) * 2017-06-15 2017-10-24 贵州电网有限责任公司电力科学研究院 A kind of transmission line of electricity vibration number distribution on line formula monitoring method

Also Published As

Publication number Publication date
WO2015170116A1 (en) 2015-11-12

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)