GB2458396B - Identification of the channel frequency response using a pseudo-random sequence or pseudo-random binary sequence - Google Patents

Identification of the channel frequency response using a pseudo-random sequence or pseudo-random binary sequence

Info

Publication number
GB2458396B
GB2458396B GB0910286A GB0910286A GB2458396B GB 2458396 B GB2458396 B GB 2458396B GB 0910286 A GB0910286 A GB 0910286A GB 0910286 A GB0910286 A GB 0910286A GB 2458396 B GB2458396 B GB 2458396B
Authority
GB
United Kingdom
Prior art keywords
pseudo
random
sequence
identification
frequency response
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.)
Active
Application number
GB0910286A
Other versions
GB2458396A (en
GB0910286D0 (en
Inventor
Nabil Hentati
Hanno Reckmann
Ingolf Wassermann
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.)
Baker Hughes Holdings LLC
Original Assignee
Baker Hughes 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 Baker Hughes Inc filed Critical Baker Hughes Inc
Priority to GB0910286A priority Critical patent/GB2458396B/en
Publication of GB0910286D0 publication Critical patent/GB0910286D0/en
Publication of GB2458396A publication Critical patent/GB2458396A/en
Application granted granted Critical
Publication of GB2458396B publication Critical patent/GB2458396B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
    • E21B47/18—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the well fluid, e.g. mud pressure pulse telemetry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H15/00—Measuring mechanical or acoustic impedance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/003—Seismic data acquisition in general, e.g. survey design
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
    • G01V11/002—Details, e.g. power supply systems for logging instruments, transmitting or recording data, specially adapted for well logging, also if the prospecting method is irrelevant
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Radio Relay Systems (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
GB0910286A 2004-11-22 2005-11-19 Identification of the channel frequency response using a pseudo-random sequence or pseudo-random binary sequence Active GB2458396B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0910286A GB2458396B (en) 2004-11-22 2005-11-19 Identification of the channel frequency response using a pseudo-random sequence or pseudo-random binary sequence

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US62999004P 2004-11-22 2004-11-22
GB0910286A GB2458396B (en) 2004-11-22 2005-11-19 Identification of the channel frequency response using a pseudo-random sequence or pseudo-random binary sequence
GB0710317A GB2435660B (en) 2004-11-22 2005-11-19 Identification of the channel frequency response using chirps

Publications (3)

Publication Number Publication Date
GB0910286D0 GB0910286D0 (en) 2009-07-29
GB2458396A GB2458396A (en) 2009-09-23
GB2458396B true GB2458396B (en) 2009-11-04

Family

ID=38198608

Family Applications (3)

Application Number Title Priority Date Filing Date
GB0910286A Active GB2458396B (en) 2004-11-22 2005-11-19 Identification of the channel frequency response using a pseudo-random sequence or pseudo-random binary sequence
GB0910285A Active GB2458395B (en) 2004-11-22 2005-11-19 Identification of the channel frequency response using stepped frequencies
GB0710317A Active GB2435660B (en) 2004-11-22 2005-11-19 Identification of the channel frequency response using chirps

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB0910285A Active GB2458395B (en) 2004-11-22 2005-11-19 Identification of the channel frequency response using stepped frequencies
GB0710317A Active GB2435660B (en) 2004-11-22 2005-11-19 Identification of the channel frequency response using chirps

Country Status (3)

Country Link
CA (1) CA2588059C (en)
GB (3) GB2458396B (en)
NO (1) NO338841B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2920912C (en) 2013-08-28 2020-07-28 Evolution Engineering Inc. Optimizing electromagnetic telemetry transmissions
CN105784103B (en) * 2016-01-22 2019-01-29 北京航空航天大学 A kind of frequency characteristic measurement method of the change signal-to-noise ratio based on nonlinear frequency modulation excitation
US20220205959A1 (en) * 2019-01-16 2022-06-30 Massachusetts Institute Of Technology Acoustic spectrometer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5055837A (en) * 1990-09-10 1991-10-08 Teleco Oilfield Services Inc. Analysis and identification of a drilling fluid column based on decoding of measurement-while-drilling signals
US6501804B1 (en) * 1996-11-08 2002-12-31 Deutsche Telekom Ag Method for the transmission of digital signals

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4314364A (en) * 1979-07-26 1982-02-02 Atlantic Richfield Company Long sweep vibroseis record production
US5283768A (en) * 1991-06-14 1994-02-01 Baker Hughes Incorporated Borehole liquid acoustic wave transducer
US5124953A (en) * 1991-07-26 1992-06-23 Teleco Oilfield Services Inc. Acoustic data transmission method
US6509866B2 (en) * 2000-01-12 2003-01-21 California Institute Of Technology Fast chirp transform

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5055837A (en) * 1990-09-10 1991-10-08 Teleco Oilfield Services Inc. Analysis and identification of a drilling fluid column based on decoding of measurement-while-drilling signals
US6501804B1 (en) * 1996-11-08 2002-12-31 Deutsche Telekom Ag Method for the transmission of digital signals

Also Published As

Publication number Publication date
GB2458396A (en) 2009-09-23
GB2458395A (en) 2009-09-23
NO20072656L (en) 2007-06-08
GB0910286D0 (en) 2009-07-29
GB2435660A (en) 2007-09-05
GB0910285D0 (en) 2009-07-29
CA2588059A1 (en) 2006-06-01
GB2435660B (en) 2009-10-14
GB0710317D0 (en) 2007-07-11
CA2588059C (en) 2010-06-08
NO338841B1 (en) 2016-10-24
GB2458395B (en) 2009-11-04

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