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GB2441692A - Method for coherence-filtering of acoustic array signal - Google Patents

Method for coherence-filtering of acoustic array signal

Info

Publication number
GB2441692A
GB2441692A GB0723967A GB0723967A GB2441692A GB 2441692 A GB2441692 A GB 2441692A GB 0723967 A GB0723967 A GB 0723967A GB 0723967 A GB0723967 A GB 0723967A GB 2441692 A GB2441692 A GB 2441692A
Authority
GB
United Kingdom
Prior art keywords
data
coherence
processing
signals
transformed
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
GB0723967A
Other versions
GB0723967D0 (en
GB2441692B (en
Inventor
Xiao Ming Tang
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
Publication of GB0723967D0 publication Critical patent/GB0723967D0/en
Publication of GB2441692A publication Critical patent/GB2441692A/en
Application granted granted Critical
Publication of GB2441692B publication Critical patent/GB2441692B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
    • G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy
    • G01V1/364—Seismic filtering
    • 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
    • G01V1/44—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging using generators and receivers in the same well
    • G01V1/48—Processing data
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V2210/00—Details of seismic processing or analysis
    • G01V2210/30—Noise handling
    • G01V2210/32—Noise reduction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V2210/00—Details of seismic processing or analysis
    • G01V2210/30—Noise handling
    • G01V2210/32—Noise reduction
    • G01V2210/324—Filtering
    • G01V2210/3246—Coherent noise, e.g. spatially coherent or predictable

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

A method waveform processing technique utilizing signal coherence of the array data for processing signals having poor signal-to-noise ratio. Raw waveform data is first transformed into f-k (frequency-wavenumber) domain. A coherence function is then calculated and convolved with the data in the f-k domain, which effectively suppresses non-coherent signals in the data. For the remaining coherent data, the unwanted part is muted and the wanted part is retained and inverse-transformed to yield the coherence-filtered array waveform data. After this processing, small signals that are hidden in the original data are extracted with much enhanced coherence. Subsequent processing of the data yields reliable information about formation acoustic property.
GB0723967A 2005-06-15 2006-06-06 Method for coherence-filtering of acoustic array signals Active GB2441692B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US37607005A 2005-06-15 2005-06-15
PCT/US2006/021922 WO2006138112A2 (en) 2005-06-15 2006-06-06 Method for coherence-filtering of acoustic array signal

Publications (3)

Publication Number Publication Date
GB0723967D0 GB0723967D0 (en) 2008-01-30
GB2441692A true GB2441692A (en) 2008-03-12
GB2441692B GB2441692B (en) 2009-04-29

Family

ID=37570967

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0723967A Active GB2441692B (en) 2005-06-15 2006-06-06 Method for coherence-filtering of acoustic array signals

Country Status (4)

Country Link
CA (1) CA2610997C (en)
EA (1) EA013384B1 (en)
GB (1) GB2441692B (en)
WO (1) WO2006138112A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103605165A (en) * 2013-11-29 2014-02-26 中国神华能源股份有限公司 Method and device for monitoring earth surface medium objects

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103901474A (en) * 2014-04-18 2014-07-02 成都新核中创信息科技有限公司 Microseism weak signal extracting method based on middle course wavelet threshold analysis
US20190293823A1 (en) * 2016-12-14 2019-09-26 Halliburton Energy Services, Inc. Acoustic logging data processing using waveform amplitude and phase

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2558602B1 (en) * 1984-01-19 1986-05-30 Petroles Cie Francaise METHOD FOR OBTAINING AND COMPUTER PROCESSING OF SEISMIC DATA RECORDED FROM AN EXPLORATION WELL
US5237538A (en) * 1992-02-20 1993-08-17 Mobil Oil Corporation Method for removing coherent noise from an array of seismic traces
US5392213A (en) * 1992-10-23 1995-02-21 Exxon Production Research Company Filter for removal of coherent noise from seismic data
US6427124B1 (en) * 1997-01-24 2002-07-30 Baker Hughes Incorporated Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries

Non-Patent Citations (1)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103605165A (en) * 2013-11-29 2014-02-26 中国神华能源股份有限公司 Method and device for monitoring earth surface medium objects

Also Published As

Publication number Publication date
GB0723967D0 (en) 2008-01-30
CA2610997C (en) 2013-08-13
WO2006138112A2 (en) 2006-12-28
EA200702585A1 (en) 2008-10-30
EA013384B1 (en) 2010-04-30
GB2441692B (en) 2009-04-29
WO2006138112A3 (en) 2008-05-08
CA2610997A1 (en) 2006-12-28

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