CA1238389A - Spinner transducer - Google Patents

Spinner transducer

Info

Publication number
CA1238389A
CA1238389A CA000437890A CA437890A CA1238389A CA 1238389 A CA1238389 A CA 1238389A CA 000437890 A CA000437890 A CA 000437890A CA 437890 A CA437890 A CA 437890A CA 1238389 A CA1238389 A CA 1238389A
Authority
CA
Canada
Prior art keywords
shaft
coil
magnetic
detector
signal
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.)
Expired
Application number
CA000437890A
Other languages
English (en)
French (fr)
Inventor
John A. Hammond
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.)
NL Industries Inc
Original Assignee
NL Industries 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 NL Industries Inc filed Critical NL Industries Inc
Application granted granted Critical
Publication of CA1238389A publication Critical patent/CA1238389A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/10Locating fluid leaks, intrusions or movements
    • E21B47/113Locating fluid leaks, intrusions or movements using electrical indications; using light radiations
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00Indicating or recording presence, absence, or direction, of movement
    • G01P13/02Indicating direction only, e.g. by weather vane
    • G01P13/04Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
    • G01P13/045Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement with speed indication

Landscapes

  • Physics & Mathematics (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geophysics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
CA000437890A 1983-02-07 1983-09-29 Spinner transducer Expired CA1238389A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US46464083A 1983-02-07 1983-02-07
US464,640 1983-02-07

Publications (1)

Publication Number Publication Date
CA1238389A true CA1238389A (en) 1988-06-21

Family

ID=23844710

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000437890A Expired CA1238389A (en) 1983-02-07 1983-09-29 Spinner transducer

Country Status (3)

Country Link
CA (1) CA1238389A (enrdf_load_html_response)
FR (1) FR2548373B1 (enrdf_load_html_response)
GB (1) GB2135060B (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102337880A (zh) * 2010-07-16 2012-02-01 桑德克斯有线有限公司 流体流传感器

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0020363D0 (en) * 2000-08-18 2000-10-04 Russell Michael Detector asssemblies and methods
US9823090B2 (en) 2014-10-31 2017-11-21 Allegro Microsystems, Llc Magnetic field sensor for sensing a movement of a target object
GB2466457B (en) 2008-12-19 2011-11-16 Schlumberger Holdings Rotating flow meter
US8689903B2 (en) * 2010-04-14 2014-04-08 Baker Hughes Incorporated Coring apparatus and methods
US9817078B2 (en) 2012-05-10 2017-11-14 Allegro Microsystems Llc Methods and apparatus for magnetic sensor having integrated coil
US10495699B2 (en) * 2013-07-19 2019-12-03 Allegro Microsystems, Llc Methods and apparatus for magnetic sensor having an integrated coil or magnet to detect a non-ferromagnetic target
US10145908B2 (en) 2013-07-19 2018-12-04 Allegro Microsystems, Llc Method and apparatus for magnetic sensor producing a changing magnetic field
US9823092B2 (en) 2014-10-31 2017-11-21 Allegro Microsystems, Llc Magnetic field sensor providing a movement detector
US9720054B2 (en) 2014-10-31 2017-08-01 Allegro Microsystems, Llc Magnetic field sensor and electronic circuit that pass amplifier current through a magnetoresistance element
US10712403B2 (en) 2014-10-31 2020-07-14 Allegro Microsystems, Llc Magnetic field sensor and electronic circuit that pass amplifier current through a magnetoresistance element
US10996289B2 (en) 2017-05-26 2021-05-04 Allegro Microsystems, Llc Coil actuated position sensor with reflected magnetic field
US10324141B2 (en) 2017-05-26 2019-06-18 Allegro Microsystems, Llc Packages for coil actuated position sensors
US10837943B2 (en) 2017-05-26 2020-11-17 Allegro Microsystems, Llc Magnetic field sensor with error calculation
US10641842B2 (en) 2017-05-26 2020-05-05 Allegro Microsystems, Llc Targets for coil actuated position sensors
US10310028B2 (en) 2017-05-26 2019-06-04 Allegro Microsystems, Llc Coil actuated pressure sensor
US11428755B2 (en) 2017-05-26 2022-08-30 Allegro Microsystems, Llc Coil actuated sensor with sensitivity detection
US10823586B2 (en) 2018-12-26 2020-11-03 Allegro Microsystems, Llc Magnetic field sensor having unequally spaced magnetic field sensing elements
US11061084B2 (en) 2019-03-07 2021-07-13 Allegro Microsystems, Llc Coil actuated pressure sensor and deflectable substrate
US10955306B2 (en) 2019-04-22 2021-03-23 Allegro Microsystems, Llc Coil actuated pressure sensor and deformable substrate
US11280637B2 (en) 2019-11-14 2022-03-22 Allegro Microsystems, Llc High performance magnetic angle sensor
US11237020B2 (en) 2019-11-14 2022-02-01 Allegro Microsystems, Llc Magnetic field sensor having two rows of magnetic field sensing elements for measuring an angle of rotation of a magnet
US11262422B2 (en) 2020-05-08 2022-03-01 Allegro Microsystems, Llc Stray-field-immune coil-activated position sensor
US11493361B2 (en) 2021-02-26 2022-11-08 Allegro Microsystems, Llc Stray field immune coil-activated sensor
US11578997B1 (en) 2021-08-24 2023-02-14 Allegro Microsystems, Llc Angle sensor using eddy currents
US12286859B2 (en) 2023-09-01 2025-04-29 Weatherford Technology Holdings, Llc Monitoring operation of a rotating control device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1052383A (enrdf_load_html_response) * 1900-01-01
GB578860A (en) * 1944-04-13 1946-07-15 Westinghouse Electric Int Co Improvements in or relating to torque indicating or measuring devices
GB588677A (en) * 1945-02-12 1947-05-30 Siemens Brothers & Co Ltd Electrical arrangements for measuring small movements
GB1007271A (en) * 1960-10-14 1965-10-13 Albert Jefferies Baggott Improvements in or relating to a method of and apparatus for measuring and/or recording the displacement and/or rate of displacement of a movable member
FR2034272A1 (enrdf_load_html_response) * 1969-03-06 1970-12-11 Schlumberger Prospection
US4095177A (en) * 1973-05-29 1978-06-13 Square D Company Transducer
DE2521163C2 (de) * 1975-05-13 1977-06-16 Frieseke & Hoepfner Gmbh Einrichtung zur ermittlung einer der drehzahl oder dem drehwinkel einer achse entsprechenden groesse
CH608150A5 (enrdf_load_html_response) * 1975-07-02 1978-12-15 Hartig Gunter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102337880A (zh) * 2010-07-16 2012-02-01 桑德克斯有线有限公司 流体流传感器

Also Published As

Publication number Publication date
GB2135060B (en) 1986-06-11
FR2548373B1 (enrdf_load_html_response) 1989-08-04
FR2548373A1 (enrdf_load_html_response) 1985-01-04
GB2135060A (en) 1984-08-22
GB8401700D0 (en) 1984-02-22

Similar Documents

Publication Publication Date Title
CA1238389A (en) Spinner transducer
US5375476A (en) Stuck pipe locator system
US7403000B2 (en) Apparatus and method of determining casing thickness and permeability
US4566317A (en) Borehole flow meter
US4710712A (en) Method and apparatus for measuring defects in ferromagnetic elements
US4647853A (en) Mud turbine tachometer
CA2369213C (en) Casing joint locator methods and apparatus
US5740126A (en) Turbo siren signal generator for measurement while drilling systems
US6100696A (en) Method and apparatus for directional measurement of subsurface electrical properties
CA2412273C (en) Downhole magnetic-field based feature detector
US4933640A (en) Apparatus for locating an elongated conductive body by electromagnetic measurement while drilling
CN102538836B (zh) 轴的分区磁编码的方法和设备
US5339037A (en) Apparatus and method for determining the resistivity of earth formations
CA1222287A (en) Method and apparatus for measuring defects in ferromagnetic tubing
EP0541425A2 (en) Dipmeter apparatus and method for investigating earth formations
CA2409443A1 (en) Method and apparatus for determining the direction and rate of a rotating element
GB2037439A (en) Casing inspection with magnetic permeability correction
US4121657A (en) Position indicator for downhole tool
GB2268589A (en) Electromagnetic propagation tool using magnetic dipole antennae
CA1084701A (en) Linearly corrected articulated linkage for wellbore measuring instrument
US4472680A (en) Circuit for processing electrical signals generated by a casing collar indicator instrument
US4754642A (en) High temperature fluid flow speed detection apparatus
DE2620801C2 (de) Anordnung zur Ermittlung von Richtungsgrößen eines Bohrstranges
GB2405212A (en) Downhole magnetic field based feature detector
EP0802414A2 (en) Shaft seal and shaft sensor

Legal Events

Date Code Title Description
MKEX Expiry