CA2358777A1 - Method for determining formation slowness particularly adapted for measurement while drilling applications - Google Patents

Method for determining formation slowness particularly adapted for measurement while drilling applications Download PDF

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Publication number
CA2358777A1
CA2358777A1 CA002358777A CA2358777A CA2358777A1 CA 2358777 A1 CA2358777 A1 CA 2358777A1 CA 002358777 A CA002358777 A CA 002358777A CA 2358777 A CA2358777 A CA 2358777A CA 2358777 A1 CA2358777 A1 CA 2358777A1
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CA
Canada
Prior art keywords
coherence
slowness
measurement
particularly adapted
drilling applications
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
CA002358777A
Other languages
French (fr)
Other versions
CA2358777C (en
Inventor
Dominique Dion
Kai Hsu
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.)
Schlumberger Canada Ltd
Original Assignee
Schlumberger Canada Ltd
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 Schlumberger Canada Ltd filed Critical Schlumberger Canada Ltd
Publication of CA2358777A1 publication Critical patent/CA2358777A1/en
Application granted granted Critical
Publication of CA2358777C publication Critical patent/CA2358777C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/40—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

Abstract

A method is disclosed for calculating acoustic slowness of earth formation from signals measured at a plurality of receivers at axially spaced apart locations from a transmitter on a logging instrument. The method include calculating a multichannel coherence from the signals, and stacking the coherence from the signals detected from a plurality of actuations of the transmitter. The formation slowness is determined from the stacked coherence measure. In one embodiment, the coherence measure is slowness time coherence.
CA002358777A 2000-10-16 2001-10-15 Method for determining formation slowness particularly adapted for measurement while drilling applications Expired - Fee Related CA2358777C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US68843700A 2000-10-16 2000-10-16
US09/688,437 2000-10-16

Publications (2)

Publication Number Publication Date
CA2358777A1 true CA2358777A1 (en) 2002-04-16
CA2358777C CA2358777C (en) 2005-01-25

Family

ID=24764413

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002358777A Expired - Fee Related CA2358777C (en) 2000-10-16 2001-10-15 Method for determining formation slowness particularly adapted for measurement while drilling applications

Country Status (4)

Country Link
US (1) US7013217B2 (en)
CA (1) CA2358777C (en)
GB (1) GB2372322B (en)
NO (1) NO20015006L (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6957572B1 (en) 2004-06-21 2005-10-25 Schlumberger Technology Corporation Apparatus and methods for measuring mud slowness in a borehole
US7334651B2 (en) * 2004-07-21 2008-02-26 Schlumberger Technology Corporation Kick warning system using high frequency fluid mode in a borehole
US7764572B2 (en) * 2004-12-08 2010-07-27 Schlumberger Technology Corporation Methods and systems for acoustic waveform processing
US7516015B2 (en) * 2005-03-31 2009-04-07 Schlumberger Technology Corporation System and method for detection of near-wellbore alteration using acoustic data
US7251566B2 (en) * 2005-03-31 2007-07-31 Schlumberger Technology Corporation Pump off measurements for quality control and wellbore stability prediction
US8009509B2 (en) * 2008-04-09 2011-08-30 Schlumberger Technology Corporation Automated mud slowness estimation
US10317545B2 (en) * 2012-03-12 2019-06-11 Schlumberger Technology Corporation Methods and apparatus for waveform processing
CN103388473B (en) * 2012-05-10 2016-04-13 中国石油集团长城钻探工程有限公司 The method of direct-wave jamming, system and acoustic logging instrument is eliminated in acoustic logging
EP3227531A4 (en) 2015-01-30 2018-08-15 Halliburton Energy Services, Inc. Peak tracking and rejection in acoustic logs

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3597727A (en) * 1968-12-30 1971-08-03 Chevron Res Method of attenuating multiple seismic signals in the determination of inline and cross dips employing cross-steered seismic data
US4594691A (en) * 1981-12-30 1986-06-10 Schlumberger Technology Corporation Sonic well logging
US4543648A (en) * 1983-12-29 1985-09-24 Schlumberger Technology Corporation Shot to shot processing for measuring a characteristic of earth formations from inside a borehole
US4698793A (en) * 1984-05-23 1987-10-06 Schlumberger Technology Corporation Methods for processing sonic data
US4819214A (en) * 1987-10-29 1989-04-04 Amoco Corporation Sonic logging system
US5852587A (en) * 1988-12-22 1998-12-22 Schlumberger Technology Corporation Method of and apparatus for sonic logging while drilling a borehole traversing an earth formation
US5392213A (en) * 1992-10-23 1995-02-21 Exxon Production Research Company Filter for removal of coherent noise from seismic data
US5594706A (en) * 1993-12-20 1997-01-14 Schlumberger Technology Corporation Downhole processing of sonic waveform information
US5510582A (en) * 1995-03-06 1996-04-23 Halliburton Company Acoustic attenuator, well logging apparatus and method of well logging
GB2309082B (en) * 1996-01-09 1999-12-01 Geco As Noise filtering method
AU7138698A (en) 1997-04-18 1998-11-13 University Of Utah Research Foundation Method and apparatus for multichannel active noise and vibration control
US6026913A (en) * 1997-09-30 2000-02-22 Halliburton Energy Services, Inc. Acoustic method of connecting boreholes for multi-lateral completion
US6082484A (en) * 1998-12-01 2000-07-04 Baker Hughes Incorporated Acoustic body wave dampener
GB9907620D0 (en) * 1999-04-01 1999-05-26 Schlumberger Ltd Processing sonic waveform measurements
GB2357841B (en) * 1999-10-06 2001-12-12 Schlumberger Ltd Processing sonic waveform measurements from array borehole logging tools
US6477112B1 (en) * 2000-06-20 2002-11-05 Baker Hughes Incorporated Method for enhancing resolution of earth formation elastic-wave velocities by isolating a wave event and matching it for all receiver combinations on an acoustic-array logging tool
US6748329B2 (en) * 2000-12-08 2004-06-08 Halliburton Energy Services, Inc. Acoustic signal processing method using array coherency

Also Published As

Publication number Publication date
CA2358777C (en) 2005-01-25
US7013217B2 (en) 2006-03-14
US20040006428A1 (en) 2004-01-08
NO20015006D0 (en) 2001-10-15
GB2372322B (en) 2003-04-16
GB0124179D0 (en) 2001-11-28
GB2372322A (en) 2002-08-21
NO20015006L (en) 2002-04-17

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