CA2490107A1 - Technique and system for measuring a characteristic in a subterranean well - Google Patents
Technique and system for measuring a characteristic in a subterranean well Download PDFInfo
- Publication number
- CA2490107A1 CA2490107A1 CA002490107A CA2490107A CA2490107A1 CA 2490107 A1 CA2490107 A1 CA 2490107A1 CA 002490107 A CA002490107 A CA 002490107A CA 2490107 A CA2490107 A CA 2490107A CA 2490107 A1 CA2490107 A1 CA 2490107A1
- Authority
- CA
- Canada
- Prior art keywords
- sensor
- optical fiber
- measure
- characteristic
- temperature
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract 32
- 239000013307 optical fiber Substances 0.000 claims 24
- 238000005259 measurement Methods 0.000 claims 14
- 238000009529 body temperature measurement Methods 0.000 claims 8
- 238000012993 chemical processing Methods 0.000 claims 2
- 239000000835 fiber Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 238000000253 optical time-domain reflectometry Methods 0.000 claims 2
- 238000012545 processing Methods 0.000 claims 2
- 238000001228 spectrum Methods 0.000 claims 2
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
- G01D5/35383—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 multiple sensor devices using multiplexing techniques
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
- E21B47/07—Temperature
-
- 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
- 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
- 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
- G01K11/3206—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 at discrete locations in the fibre, e.g. using Bragg scattering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geophysics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Geophysics And Detection Of Objects (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
A technique (80, 100) that usable in a subterranean well includes deploying a first sensor (38) in a remote location to measure a distribution of a characteristic along a segment (50) at the location. The technique (80, 100) includes deploying a second sensor (34) downhole to measure the characterist ic at discrete points within the segment (50). The second sensor (34) is separa te from the first sensor (38).
Claims (54)
1. A method usable with a subterranean well, comprising:
deploying a first sensor downhole to measure a distribution of a characteristic along a portion of the well; and deploying a second sensor downhole to measure the characteristic at discrete points within the portion, the second sensor being separate from the first sensor.
deploying a first sensor downhole to measure a distribution of a characteristic along a portion of the well; and deploying a second sensor downhole to measure the characteristic at discrete points within the portion, the second sensor being separate from the first sensor.
2. The method of claim 1, wherein the second sensor comprises at least one interferometric sensor.
3. The method of claim 1, wherein the first sensor comprises a distributed temperature sensor and the second sensor comprises at least one fiber Bragg grating.
4. The method of claim 1, wherein the characteristic comprises at least one of a stress and a temperature.
5. The method of claim 1, wherein the first sensor comprises an optical fiber.
6. The method of claim 1, wherein the second sensor comprises an optical fiber comprising at least one Bragg grating.
7. The method of claim 1, further comprising:
using optical time domain reflectometry to measure the distribution of the characteristic using the first sensor.
using optical time domain reflectometry to measure the distribution of the characteristic using the first sensor.
8. The method of claim 1, further comprising:
selectively combining the measurements from the first and second sensors to enhance a measurement temperature resolution.
selectively combining the measurements from the first and second sensors to enhance a measurement temperature resolution.
9. The method of claim 1, further comprising:
using the second sensor to enhance an accuracy provided by the first sensor.
using the second sensor to enhance an accuracy provided by the first sensor.
10. The method of claim 1, further comprising:
using the first and second temperature sensors to measure movement of a temperature spot.
using the first and second temperature sensors to measure movement of a temperature spot.
11. The method of claim 1, wherein the first sensor comprises a single-ended optical fiber.
12. The method of claim 1, wherein the first sensor comprises a double-ended optical fiber.
13. The method of claim 1, wherein the first sensor is associated with an intensity-based temperature measurement system; and the second sensor is associated with a frequency-based temperature measurement system.
14. The method of claim 1, wherein the first sensor and the second sensor are formed from an optical fiber shared in common by both the first sensor and the second sensor.
15. The method of claim 1, further comprising:
using the second sensor to measure reservoir properties of the well; and using the first sensor to measure production properties of the well.
using the second sensor to measure reservoir properties of the well; and using the first sensor to measure production properties of the well.
16. The method of claim 15, wherein the measurement by the second sensor has a higher resolution than the measurement by the first sensor.
17. A system usable with a subterranean well, comprising:
a first sensor extending downhole to measure a distribution of a characteristic along a portion of the well; and a second sensor extending downhole to measure the characteristic at discrete points within the portion, the second sensor being separate from the first sensor.
a first sensor extending downhole to measure a distribution of a characteristic along a portion of the well; and a second sensor extending downhole to measure the characteristic at discrete points within the portion, the second sensor being separate from the first sensor.
18. The system of claim 17, wherein the first sensor comprises a distributed temperature sensor and the second sensor comprises at least one fiber Bragg grating.
19. The system of claim 17, wherein the measurement by the second sensor has a higher resolution than the measurement by the first sensor.
20. The system of claim 17, wherein the characteristic comprises at least one of a stress and a temperature.
21. The system of claim 17, wherein the second sensor comprises an optical fiber comprising at least one Bragg grating.
22. The system of claim 17, wherein the first sensor comprises an optical fiber, the system further comprising:
a light source to generate light pulses downhole into the optical fiber; and an analyzer to analyze the spectrum of backscattered light produced by the light pulses to derive the distribution.
a light source to generate light pulses downhole into the optical fiber; and an analyzer to analyze the spectrum of backscattered light produced by the light pulses to derive the distribution.
23. The system of claim 17, further comprising:
a processor to selectively combine the measurements from the first and second sensors to enhance a measurement resolution.
a processor to selectively combine the measurements from the first and second sensors to enhance a measurement resolution.
24. The system of claim 17, wherein the first sensor comprises an optical fiber.
25. The system of claim 17, wherein the first sensor comprises a single-ended optical fiber.
26. The system of claim 17, wherein the first sensor comprises a double-ended optical fiber.
27. The system of claim 17, wherein the first sensor is associated with an intensity-based temperature measurement system, and the second sensor is associated with a frequency-based temperature measurement system.
28. The system of claim 17, wherein the first sensor and the second sensor are formed from an optical fiber shared in common by both the first sensor and the second sensor.
29. The system of claim 17, wherein the second sensor is used to measure reservoir properties of the well and the first sensor is used to measure production properties of the well.
30. A method comprising:
deploying a first sensor in a remote location to measure a distribution of a characteristic along a segment of the remote location; and deploying a second sensor in the remote location to measure the characteristic at discrete points within the segment, the second sensor being separate from the first sensor.
deploying a first sensor in a remote location to measure a distribution of a characteristic along a segment of the remote location; and deploying a second sensor in the remote location to measure the characteristic at discrete points within the segment, the second sensor being separate from the first sensor.
31. The method of claim 30, wherein the remote location comprises one of the following:
food processing equipment; chemical processing equipment, a subterranean well, a power cable, and a pipeline.
food processing equipment; chemical processing equipment, a subterranean well, a power cable, and a pipeline.
32. The method of claim 30, wherein the characteristic comprises at least one of a temperature and a stress.
33. The method of claim 30, wherein the first sensor comprises an optical fiber.
34. The method of claim 30, wherein the second sensor comprises an optical fiber comprising at least one Bragg grating.
35. The method of claim 30, further comprising:
using optical time domain reflectometry to measure the distribution of the characteristic using the first sensor.
using optical time domain reflectometry to measure the distribution of the characteristic using the first sensor.
36. The method of claim 30, further comprising:
selectively combining the measurements from the first and second sensors to enhance a measurement temperature resolution.
selectively combining the measurements from the first and second sensors to enhance a measurement temperature resolution.
37. The method of claim 30, further comprising:
using the second sensor to enhance an accuracy provided by the first sensor.
using the second sensor to enhance an accuracy provided by the first sensor.
38. The method of claim 30, further comprising:
using the first and second temperature sensors to measure movement of a temperature spot.
using the first and second temperature sensors to measure movement of a temperature spot.
39. The method of claim 30, wherein the first sensor comprises a single-ended optical fiber.
40. The method of claim 30, wherein the first sensor comprises a double-ended optical fiber.
41. The method of claim 30, wherein the first sensor is associated with an intensity-based temperature measurement system; and the second sensor is associated with a frequency-based temperature measurement system.
42. The method of claim 30, wherein the first sensor and the second sensor are formed from an optical fiber shared in common by both the first sensor and the second sensor.
43. A system comprising:
a first sensor located at a remote portion to measure a distribution of a characteristic along a segment at the remote location; and a second sensor extending downhole to measure the characteristic at discrete points within the portion, the second sensor being separate from the first sensor.
a first sensor located at a remote portion to measure a distribution of a characteristic along a segment at the remote location; and a second sensor extending downhole to measure the characteristic at discrete points within the portion, the second sensor being separate from the first sensor.
44. The system of claim 43, wherein the characteristic comprises at least one of a stress and a temperature.
45. The system of claim 43, wherein the remote location comprises one of the following:
food processing equipment; chemical processing equipment, a subterranean well, a power cable and a pipeline.
food processing equipment; chemical processing equipment, a subterranean well, a power cable and a pipeline.
46. The system of claim 43, wherein the second sensor comprises an optical fiber comprising at least one Bragg grating.
47. The system of claim 43, wherein the first sensor comprises an optical fiber, the system further comprising:
a light source to generate light pulses into the optical fiber; and analyzer to analyze the spectrum of backscattered light produced by the light pulses to derive the distribution.
a light source to generate light pulses into the optical fiber; and analyzer to analyze the spectrum of backscattered light produced by the light pulses to derive the distribution.
48. The system of claim 43, further comprising:
a processor to selectively combine the measurements from the first and second sensors to enhance a measurement resolution.
a processor to selectively combine the measurements from the first and second sensors to enhance a measurement resolution.
49. The system of claim 43, further comprising:
a processor to combine the measurements from the first and sensors to enhance a measurement accuracy.
a processor to combine the measurements from the first and sensors to enhance a measurement accuracy.
50. The system of claim 43, wherein the first sensor comprises an optical fiber.
51. The system of claim 43, wherein the first sensor comprises a single-ended optical fiber.
52. The system of claim 43, wherein the first sensor comprises a double-ended optical fiber.
53. The system of claim 43, wherein the first sensor is associated with an intensity-based temperature measurement system, and the second sensor is associated with a frequency-based temperature measurement system.
54. The system of claim 43, wherein the first sensor and the second sensor are formed from an optical fiber shared in common by both the first sensor and the second sensor.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/176,858 US20030234921A1 (en) | 2002-06-21 | 2002-06-21 | Method for measuring and calibrating measurements using optical fiber distributed sensor |
US10/176,858 | 2002-06-21 | ||
US10/317,556 | 2002-12-12 | ||
US10/317,556 US6751556B2 (en) | 2002-06-21 | 2002-12-12 | Technique and system for measuring a characteristic in a subterranean well |
PCT/US2003/019395 WO2004001356A2 (en) | 2002-06-21 | 2003-06-19 | Technique and system for measuring a characteristic in a subterranean well |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2490107A1 true CA2490107A1 (en) | 2003-12-31 |
CA2490107C CA2490107C (en) | 2010-02-16 |
Family
ID=32599577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2490107A Expired - Fee Related CA2490107C (en) | 2002-06-21 | 2003-06-19 | Technique and system for measuring a characteristic in a subterranean well |
Country Status (5)
Country | Link |
---|---|
AU (1) | AU2003261080A1 (en) |
CA (1) | CA2490107C (en) |
GB (1) | GB2406168B (en) |
NO (1) | NO20045112L (en) |
WO (1) | WO2004001356A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7583371B2 (en) | 2003-10-29 | 2009-09-01 | Weatherford/Lamb, Inc. | Combined bragg grating wavelength interrogator and brillouin backscattering measuring instrument |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7282698B2 (en) * | 2005-09-08 | 2007-10-16 | Baker Hughes Incorporated | System and method for monitoring a well |
CN100543498C (en) * | 2007-11-14 | 2009-09-23 | 山东大学 | Tunnel tunnel face front exploring water inductor |
GB2467177A (en) * | 2009-01-27 | 2010-07-28 | Sensornet Ltd | Sensing inside and outside tubing |
US9021875B2 (en) * | 2009-02-13 | 2015-05-05 | Halliburton Energy Services, Inc. | Bi-directional flow and distributed temperature sensing in subterranean wells |
US9388686B2 (en) | 2010-01-13 | 2016-07-12 | Halliburton Energy Services, Inc. | Maximizing hydrocarbon production while controlling phase behavior or precipitation of reservoir impairing liquids or solids |
DE102010001197B4 (en) * | 2010-01-25 | 2019-05-29 | Draka Cable Wuppertal Gmbh | Sensor element and method for its production and use |
US8505625B2 (en) | 2010-06-16 | 2013-08-13 | Halliburton Energy Services, Inc. | Controlling well operations based on monitored parameters of cement health |
US8893785B2 (en) | 2012-06-12 | 2014-11-25 | Halliburton Energy Services, Inc. | Location of downhole lines |
US9823373B2 (en) | 2012-11-08 | 2017-11-21 | Halliburton Energy Services, Inc. | Acoustic telemetry with distributed acoustic sensing system |
WO2016100370A1 (en) * | 2014-12-15 | 2016-06-23 | Weatherford Technology Holdings, Llc | Dual-ended distributed temperature sensor with temperature sensor array |
CN109424356B (en) * | 2017-08-25 | 2021-08-27 | 中国石油化工股份有限公司 | Drilling fluid loss position detection system and method |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1357403A3 (en) * | 1997-05-02 | 2004-01-02 | Sensor Highway Limited | A method of generating electric power in a wellbore |
US6274863B1 (en) * | 1999-07-23 | 2001-08-14 | Cidra Corporation | Selective aperture arrays for seismic monitoring |
US6279660B1 (en) * | 1999-08-05 | 2001-08-28 | Cidra Corporation | Apparatus for optimizing production of multi-phase fluid |
US6354734B1 (en) * | 1999-11-04 | 2002-03-12 | Kvaerner Oilfield Products, Inc. | Apparatus for accurate temperature and pressure measurement |
US6807324B2 (en) * | 2002-05-21 | 2004-10-19 | Weatherford/Lamb, Inc. | Method and apparatus for calibrating a distributed temperature sensing system |
-
2003
- 2003-06-19 GB GB0423903A patent/GB2406168B/en not_active Expired - Fee Related
- 2003-06-19 AU AU2003261080A patent/AU2003261080A1/en not_active Abandoned
- 2003-06-19 WO PCT/US2003/019395 patent/WO2004001356A2/en not_active Application Discontinuation
- 2003-06-19 CA CA2490107A patent/CA2490107C/en not_active Expired - Fee Related
-
2004
- 2004-11-24 NO NO20045112A patent/NO20045112L/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7583371B2 (en) | 2003-10-29 | 2009-09-01 | Weatherford/Lamb, Inc. | Combined bragg grating wavelength interrogator and brillouin backscattering measuring instrument |
Also Published As
Publication number | Publication date |
---|---|
GB2406168B (en) | 2006-03-15 |
WO2004001356A2 (en) | 2003-12-31 |
CA2490107C (en) | 2010-02-16 |
GB2406168A (en) | 2005-03-23 |
WO2004001356A3 (en) | 2004-07-01 |
GB0423903D0 (en) | 2004-12-01 |
AU2003261080A8 (en) | 2004-01-06 |
AU2003261080A1 (en) | 2004-01-06 |
NO20045112L (en) | 2005-03-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20180619 |