GB2435660A - Identification of the channel frequency response using chirps and stepped frequencies - Google Patents

Identification of the channel frequency response using chirps and stepped frequencies

Info

Publication number
GB2435660A
GB2435660A GB0710317A GB0710317A GB2435660A GB 2435660 A GB2435660 A GB 2435660A GB 0710317 A GB0710317 A GB 0710317A GB 0710317 A GB0710317 A GB 0710317A GB 2435660 A GB2435660 A GB 2435660A
Authority
GB
United Kingdom
Prior art keywords
chirps
identification
frequency response
channel frequency
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.)
Granted
Application number
GB0710317A
Other versions
GB0710317D0 (en
GB2435660B (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 GB0910285A priority Critical patent/GB2458395B/en
Priority to GB0910286A priority patent/GB2458396B/en
Priority claimed from PCT/US2005/042329 external-priority patent/WO2006058006A2/en
Publication of GB0710317D0 publication Critical patent/GB0710317D0/en
Publication of GB2435660A publication Critical patent/GB2435660A/en
Application granted granted Critical
Publication of GB2435660B publication Critical patent/GB2435660B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • E21B47/12—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

Abstract

The transfer function of the communication channel in a mud pulse telemetry system is determined by sending a known signal through the channel and spectral analysis of the received signal. The known signal may be a chirp signal or a stepped frequency signal. Based on the determined transfer function, operating parameters of the pulser are adjusted.
GB0710317A 2004-11-22 2005-11-19 Identification of the channel frequency response using chirps Active GB2435660B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0910285A GB2458395B (en) 2004-11-22 2005-11-19 Identification of the channel frequency response using stepped frequencies
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 (2)

Application Number Priority Date Filing Date Title
US62999004P 2004-11-22 2004-11-22
PCT/US2005/042329 WO2006058006A2 (en) 2004-11-22 2005-11-19 Identification of the channel frequency response using chirps and stepped frequencies

Publications (3)

Publication Number Publication Date
GB0710317D0 GB0710317D0 (en) 2007-07-11
GB2435660A true GB2435660A (en) 2007-09-05
GB2435660B GB2435660B (en) 2009-10-14

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 Before (2)

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

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
WO2015027340A1 (en) 2013-08-28 2015-03-05 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
WO2020149932A1 (en) * 2019-01-16 2020-07-23 Massachusetts Institute Of Technology Acoustic spectrometer

Family Cites Families (6)

* 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
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
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
DE19646164A1 (en) * 1996-11-08 1998-05-14 Deutsche Telekom Ag Process for the transmission of digital signals
US6509866B2 (en) * 2000-01-12 2003-01-21 California Institute Of Technology Fast chirp transform

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Not yet advised *

Also Published As

Publication number Publication date
CA2588059C (en) 2010-06-08
NO338841B1 (en) 2016-10-24
GB2458396A (en) 2009-09-23
NO20072656L (en) 2007-06-08
GB2458396B (en) 2009-11-04
CA2588059A1 (en) 2006-06-01
GB2458395B (en) 2009-11-04
GB0910285D0 (en) 2009-07-29
GB0910286D0 (en) 2009-07-29
GB2458395A (en) 2009-09-23
GB0710317D0 (en) 2007-07-11
GB2435660B (en) 2009-10-14

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