WO2000000799A8 - Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe - Google Patents

Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe

Info

Publication number
WO2000000799A8
WO2000000799A8 PCT/US1999/014588 US9914588W WO0000799A8 WO 2000000799 A8 WO2000000799 A8 WO 2000000799A8 US 9914588 W US9914588 W US 9914588W WO 0000799 A8 WO0000799 A8 WO 0000799A8
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
pressure sensor
fiber optic
optic pressure
unsteady pressures
Prior art date
Application number
PCT/US1999/014588
Other languages
French (fr)
Other versions
WO2000000799A9 (en
WO2000000799A1 (en
Inventor
Rebecca S Mcguinn
Daniel L Gysling
Charles R Winston
Allen R Davis
John M Faustino
Original Assignee
Cidra Corp
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
Priority claimed from US09/344,093 external-priority patent/US6450037B1/en
Application filed by Cidra Corp filed Critical Cidra Corp
Priority to AU54577/99A priority Critical patent/AU754039B2/en
Priority to CA002335469A priority patent/CA2335469C/en
Priority to EP99940795A priority patent/EP1099101B1/en
Priority to DE69927274T priority patent/DE69927274T2/en
Publication of WO2000000799A1 publication Critical patent/WO2000000799A1/en
Publication of WO2000000799A8 publication Critical patent/WO2000000799A8/en
Publication of WO2000000799A9 publication Critical patent/WO2000000799A9/en
Priority to NO20006621A priority patent/NO322412B1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
    • G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • G01L11/02—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means
    • G01L11/025—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means using a pressure-sensitive optical fibre

Abstract

Non-intrusive pressure sensors (14-18) for measuring unsteady pressures within a pipe (12) include an optical fiber (10) wrapped in coils (20-24) around the circumference of the pipe (12). The length or change in the length of the coils (20-24) is indicative of the unsteady pressure in the pipe. Bragg gratings (310-324) impressed in the fiber (10) may be used having reflection wavelength μ that relate to the unsteady pressure in the pipe. One or more of sensors (14-18) may be axially distributed along the fiber (10) using wavelength division multiplexing and/or time division multiplexing.
PCT/US1999/014588 1998-06-26 1999-06-28 Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe WO2000000799A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU54577/99A AU754039B2 (en) 1998-06-26 1999-06-28 Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe
CA002335469A CA2335469C (en) 1998-06-26 1999-06-28 Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe
EP99940795A EP1099101B1 (en) 1998-06-26 1999-06-28 Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe
DE69927274T DE69927274T2 (en) 1998-06-26 1999-06-28 NONINTRUSIVE FIBER OPTIC PRESSURE SENSOR FOR MEASURING PRESSURE CHANGES IN A TUBE
NO20006621A NO322412B1 (en) 1998-06-26 2000-12-22 Non-penetrating fiber optic pressure sensor for painting unstable pressure in a rudder

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10552598A 1998-06-26 1998-06-26
US09/105,525 1998-06-26
US09/344,093 US6450037B1 (en) 1998-06-26 1999-06-25 Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe
US09/344,093 1999-06-25

Publications (3)

Publication Number Publication Date
WO2000000799A1 WO2000000799A1 (en) 2000-01-06
WO2000000799A8 true WO2000000799A8 (en) 2000-07-06
WO2000000799A9 WO2000000799A9 (en) 2000-08-03

Family

ID=26802671

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/014588 WO2000000799A1 (en) 1998-06-26 1999-06-28 Non-intrusive fiber optic pressure sensor for measuring unsteady pressures within a pipe

Country Status (9)

Country Link
US (1) US6959604B2 (en)
EP (1) EP1099101B1 (en)
CN (1) CN1140785C (en)
AU (1) AU754039B2 (en)
CA (1) CA2335469C (en)
DE (1) DE69927274T2 (en)
NO (1) NO322412B1 (en)
RU (1) RU2001102591A (en)
WO (1) WO2000000799A1 (en)

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Also Published As

Publication number Publication date
WO2000000799A9 (en) 2000-08-03
NO20006621D0 (en) 2000-12-22
DE69927274D1 (en) 2005-10-20
WO2000000799A1 (en) 2000-01-06
AU5457799A (en) 2000-01-17
CA2335469C (en) 2009-06-09
EP1099101A1 (en) 2001-05-16
US6959604B2 (en) 2005-11-01
AU754039B2 (en) 2002-10-31
RU2001102591A (en) 2003-03-10
NO322412B1 (en) 2006-10-02
EP1099101B1 (en) 2005-09-14
US20030038231A1 (en) 2003-02-27
CA2335469A1 (en) 2000-01-06
CN1140785C (en) 2004-03-03
DE69927274T2 (en) 2006-06-22
CN1307678A (en) 2001-08-08
NO20006621L (en) 2001-02-07

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