CA2428301A1 - Method and apparatus for determining the flow velocity of a fluid within a pipe - Google Patents

Method and apparatus for determining the flow velocity of a fluid within a pipe Download PDF

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Publication number
CA2428301A1
CA2428301A1 CA002428301A CA2428301A CA2428301A1 CA 2428301 A1 CA2428301 A1 CA 2428301A1 CA 002428301 A CA002428301 A CA 002428301A CA 2428301 A CA2428301 A CA 2428301A CA 2428301 A1 CA2428301 A1 CA 2428301A1
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CA
Canada
Prior art keywords
plot
sampled data
fluid
flow velocity
sensor
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
Application number
CA002428301A
Other languages
French (fr)
Other versions
CA2428301C (en
Inventor
Daniel L. Gysling
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.)
Weatherford Technology Holdings LLC
Original Assignee
Weatherford/Lamb, Inc.
Daniel L. Gysling
Cidra Corporation
Weatherford Technology Holdings, Llc
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 Weatherford/Lamb, Inc., Daniel L. Gysling, Cidra Corporation, Weatherford Technology Holdings, Llc filed Critical Weatherford/Lamb, Inc.
Publication of CA2428301A1 publication Critical patent/CA2428301A1/en
Application granted granted Critical
Publication of CA2428301C publication Critical patent/CA2428301C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance
    • G01F1/712—Measuring the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance
    • G01F1/7082—Measuring the time taken to traverse a fixed distance using acoustic detecting arrangements

Abstract

A method is provided for measuring the flow velocity of a fluid in an elongated body by sensing at more than one location along the elongated body, vortical disturbances convecting with the fluid, and correlating the outputs of the variously positioned sensors. The method includes the steps of:
providing an array of at least two sensors disposed at predetermined locations along the elongated body, each sensor for sampling the pressure of the fluid at the position of the sensor at a predetermined sampling rate; accumulating the sampled data from each sensor at each of a number of instants of time spanning a predetermined sampling duration; and constructing from the accumulated sampled data at least a portion of a so called plot, indicative of a dispersion relation for the propagation of acoustic pressures emanating from the vortical disturbances, the constructing of the plot based on correlating the sampled data provided by at least one of the sensors with the sampled data acquired by at least one other of the sensors, and by autocorrelating the sampled data acquired by each sensor. The method usually also includes the steps of: using a feature extraction technique to identify a convective ridge in the plot; determining the orientation of the convective ridge in the plot;
and determining the flow velocity based on a predetermined correlation of the flow velocity with the slope of the convective ridge of the plot.
CA002428301A 2000-12-04 2001-12-03 Method and apparatus for determining the flow velocity of a fluid within a pipe Expired - Fee Related CA2428301C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/729,994 2000-12-04
US09/729,994 US6609069B2 (en) 2000-12-04 2000-12-04 Method and apparatus for determining the flow velocity of a fluid within a pipe
PCT/GB2001/005344 WO2002046706A2 (en) 2000-12-04 2001-12-03 Method and apparatus for determining the flow velocity of a fluid within a pipe

Publications (2)

Publication Number Publication Date
CA2428301A1 true CA2428301A1 (en) 2002-06-13
CA2428301C CA2428301C (en) 2008-10-14

Family

ID=24933463

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002428301A Expired - Fee Related CA2428301C (en) 2000-12-04 2001-12-03 Method and apparatus for determining the flow velocity of a fluid within a pipe

Country Status (7)

Country Link
US (1) US6609069B2 (en)
EP (1) EP1340054B1 (en)
AU (1) AU2002220875A1 (en)
CA (1) CA2428301C (en)
DE (1) DE60141414D1 (en)
NO (1) NO336385B1 (en)
WO (1) WO2002046706A2 (en)

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Publication number Priority date Publication date Assignee Title
US7562584B2 (en) 2005-04-07 2009-07-21 Advanced Flow Technologies Inc. System, method and apparatus for acoustic fluid flow measurement

Also Published As

Publication number Publication date
DE60141414D1 (en) 2010-04-08
CA2428301C (en) 2008-10-14
NO20032310D0 (en) 2003-05-22
AU2002220875A1 (en) 2002-06-18
US20020095263A1 (en) 2002-07-18
WO2002046706A3 (en) 2002-08-15
EP1340054B1 (en) 2010-02-24
EP1340054A2 (en) 2003-09-03
NO20032310L (en) 2003-08-01
NO336385B1 (en) 2015-08-10
WO2002046706A2 (en) 2002-06-13
US6609069B2 (en) 2003-08-19

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