CA2145006A1 - Method and apparatus for beam steering and bessel shading of conformal array - Google Patents

Method and apparatus for beam steering and bessel shading of conformal array

Info

Publication number
CA2145006A1
CA2145006A1 CA002145006A CA2145006A CA2145006A1 CA 2145006 A1 CA2145006 A1 CA 2145006A1 CA 002145006 A CA002145006 A CA 002145006A CA 2145006 A CA2145006 A CA 2145006A CA 2145006 A1 CA2145006 A1 CA 2145006A1
Authority
CA
Canada
Prior art keywords
array
beam steering
bore hole
methodology
transformers
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
CA002145006A
Other languages
French (fr)
Other versions
CA2145006C (en
Inventor
Mathew G. Schmidt
John F. Priest
Paul G. Junghans
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.)
Western Atlas International Inc
Original Assignee
Western Atlas International Inc
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 Western Atlas International Inc filed Critical Western Atlas International Inc
Priority to CA002479535A priority Critical patent/CA2479535A1/en
Publication of CA2145006A1 publication Critical patent/CA2145006A1/en
Application granted granted Critical
Publication of CA2145006C publication Critical patent/CA2145006C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
    • B06B1/0622—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface
    • B06B1/0633—Cylindrical array
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
    • G01V1/52—Structural details
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G01S15/8909—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration
    • G01S15/8915—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using a transducer array
    • G01S15/892—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using a transducer array the array being curvilinear
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G01S15/8909—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration
    • G01S15/8915—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using a transducer array
    • G01S15/8925—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using a transducer array the array being a two-dimensional transducer configuration, i.e. matrix or orthogonal linear arrays
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S367/00—Communications, electrical: acoustic wave systems and devices
    • Y10S367/911—Particular well-logging apparatus
    • Y10S367/912—Particular transducer

Abstract

This invention describes a methodology to image features using an array of multiple piezo-electric elements which employs the selective use of mechanical and electronic beam focusing, electronic beam steering and amplitude shading to increase resolution and overcome side lobe effects. This invention introduces a novel signal reconstruction technique utilizing independent array element transmission and reception, creating focusing and beam steering. Application of the methodology can be used in wireline, measurement while drilling, pipe and pipeline and medical applications.
Applications include, but are not limited to Bore hole Caliper, Bore hole Geometry, Bore hole Imaging, Casing Inspection, Cement Evaluation and Volumetric Scanning Applications (e.g. Fluid, Behind Casing and Open Hole). The configuration of the transducer array is preferably cylindrical, but may be conical, biconical, convex, concave or may take the form of a number of suitable geometric configurations.
The transducer array may incorporate a transformer block having an array of multiple transformers therein for connection to individual transducer circuits. The transformers may be fixed or capable of being mechanically tuned as desired.
CA002145006A 1994-03-22 1995-03-20 Method and apparatus for beam steering and bessel shading of conformal array Expired - Fee Related CA2145006C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002479535A CA2479535A1 (en) 1994-03-22 1995-03-20 Method and apparatus for beam steering and bessel shading of conformal array

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21664894A 1994-03-22 1994-03-22
US08/216,648 1994-03-22

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002479535A Division CA2479535A1 (en) 1994-03-22 1995-03-20 Method and apparatus for beam steering and bessel shading of conformal array

Publications (2)

Publication Number Publication Date
CA2145006A1 true CA2145006A1 (en) 1995-09-23
CA2145006C CA2145006C (en) 2006-08-08

Family

ID=22807924

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002479535A Abandoned CA2479535A1 (en) 1994-03-22 1995-03-20 Method and apparatus for beam steering and bessel shading of conformal array
CA002145006A Expired - Fee Related CA2145006C (en) 1994-03-22 1995-03-20 Method and apparatus for beam steering and bessel shading of conformal array

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002479535A Abandoned CA2479535A1 (en) 1994-03-22 1995-03-20 Method and apparatus for beam steering and bessel shading of conformal array

Country Status (5)

Country Link
US (1) US5640371A (en)
CA (2) CA2479535A1 (en)
GB (1) GB2287789B (en)
NL (1) NL194519C (en)
NO (1) NO308264B1 (en)

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Also Published As

Publication number Publication date
CA2479535A1 (en) 1995-09-23
GB2287789B (en) 1998-08-26
NO951027L (en) 1995-11-06
GB9505804D0 (en) 1995-05-10
NL194519B (en) 2002-02-01
NL9500554A (en) 1995-11-01
NO308264B1 (en) 2000-08-21
NO951027D0 (en) 1995-03-16
US5640371A (en) 1997-06-17
CA2145006C (en) 2006-08-08
NL194519C (en) 2002-06-04
GB2287789A (en) 1995-09-27

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