GB201609352D0 - Method and apparatus for optical sensing - Google Patents

Method and apparatus for optical sensing

Info

Publication number
GB201609352D0
GB201609352D0 GBGB1609352.8A GB201609352A GB201609352D0 GB 201609352 D0 GB201609352 D0 GB 201609352D0 GB 201609352 A GB201609352 A GB 201609352A GB 201609352 D0 GB201609352 D0 GB 201609352D0
Authority
GB
United Kingdom
Prior art keywords
optical sensing
sensing
optical
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
GBGB1609352.8A
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.)
Silixa Ltd
Original Assignee
Silixa 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 Silixa Ltd filed Critical Silixa Ltd
Priority to GBGB1609352.8A priority Critical patent/GB201609352D0/en
Publication of GB201609352D0 publication Critical patent/GB201609352D0/en
Priority to PCT/GB2017/051496 priority patent/WO2017203271A1/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
    • G01D5/35306—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 an interferometer arrangement
    • G01D5/35309—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 an interferometer arrangement using multiple waves interferometer
    • G01D5/35316—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 an interferometer arrangement using multiple waves interferometer using a Bragg gratings
    • 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
GBGB1609352.8A 2016-05-26 2016-05-26 Method and apparatus for optical sensing Ceased GB201609352D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GBGB1609352.8A GB201609352D0 (en) 2016-05-26 2016-05-26 Method and apparatus for optical sensing
PCT/GB2017/051496 WO2017203271A1 (en) 2016-05-26 2017-05-25 Method and apparatus for optical sensing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB1609352.8A GB201609352D0 (en) 2016-05-26 2016-05-26 Method and apparatus for optical sensing

Publications (1)

Publication Number Publication Date
GB201609352D0 true GB201609352D0 (en) 2016-07-13

Family

ID=56410640

Family Applications (1)

Application Number Title Priority Date Filing Date
GBGB1609352.8A Ceased GB201609352D0 (en) 2016-05-26 2016-05-26 Method and apparatus for optical sensing

Country Status (2)

Country Link
GB (1) GB201609352D0 (en)
WO (1) WO2017203271A1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11530606B2 (en) 2016-04-07 2022-12-20 Bp Exploration Operating Company Limited Detecting downhole sand ingress locations
EP3670830B1 (en) 2016-04-07 2021-08-11 BP Exploration Operating Company Limited Detecting downhole events using acoustic frequency domain features
EP3485325B1 (en) 2016-07-13 2022-04-06 Technology Innovation Momentum Fund (Israel) Limited Partnership Coupling sensor information to an optical cable using ultrasonic vibrations
EP3583296B1 (en) 2017-03-31 2021-07-21 BP Exploration Operating Company Limited Well and overburden monitoring using distributed acoustic sensors
AU2018321150A1 (en) 2017-08-23 2020-03-12 Bp Exploration Operating Company Limited Detecting downhole sand ingress locations
EP3695099A2 (en) 2017-10-11 2020-08-19 BP Exploration Operating Company Limited Detecting events using acoustic frequency domain features
US20210389486A1 (en) 2018-11-29 2021-12-16 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
WO2021001710A1 (en) * 2019-07-02 2021-01-07 Technology Innovation Momentum Fund (Israel) Limited Partnership Interrogation of arrays of equally spaced weak reflectors in optical fibers
CN111175786B (en) * 2019-10-14 2022-05-03 岭纬科技（厦门）有限公司 Multi-path crosstalk-eliminating wide-view-field high-resolution solid-state laser radar
EP4045766A1 (en) 2019-10-17 2022-08-24 Lytt Limited Fluid inflow characterization using hybrid das/dts measurements
CA3154435C (en) 2019-10-17 2023-03-28 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
US20230221151A1 (en) * 2020-02-21 2023-07-13 Silixa Ltd. Long range optical fiber sensing systems
CA3180595A1 (en) 2020-06-11 2021-12-16 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
CN112504429A (en) * 2020-11-24 2021-03-16 姚峰 High-precision demodulation algorithm for strong interference DVS
CN112910566A (en) * 2021-02-04 2021-06-04 北京信维科技股份有限公司 CWDM-based high-efficiency measurement method and system for optical time domain reflectometer
CN113418539B (en) * 2021-06-21 2022-03-25 南京大学 Self-heterodyne phi-OTDR system with free multi-spatial resolution

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8989528B2 (en) * 2006-02-22 2015-03-24 Hansen Medical, Inc. Optical fiber grating sensors and methods of manufacture
AU2015200314B2 (en) * 2009-05-27 2017-02-02 Silixa Limited Method and apparatus for optical sensing
WO2011006260A1 (en) * 2009-07-16 2011-01-20 Hamidreza Alemohammad Optical fibre sensor and methods of manufacture
US20130113629A1 (en) * 2011-11-04 2013-05-09 Schlumberger Technology Corporation Phase sensitive coherent otdr with multi-frequency interrogation

Also Published As

Publication number Publication date
WO2017203271A1 (en) 2017-11-30

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Legal Events

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