CA2147456A1 - Method of sonic logging while drilling a borehole traversing an earth formation - Google Patents

Method of sonic logging while drilling a borehole traversing an earth formation

Info

Publication number
CA2147456A1
CA2147456A1 CA002147456A CA2147456A CA2147456A1 CA 2147456 A1 CA2147456 A1 CA 2147456A1 CA 002147456 A CA002147456 A CA 002147456A CA 2147456 A CA2147456 A CA 2147456A CA 2147456 A1 CA2147456 A1 CA 2147456A1
Authority
CA
Canada
Prior art keywords
drill collar
transmitter
acoustic
stop band
drilling
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
CA002147456A
Other languages
French (fr)
Other versions
CA2147456C (en
Inventor
Sergio Kostek
Shu-Kong Chang
Gordon L. Mcdaniel
Thomas Plona
Curtis Randall
Jean-Pierre Masson
James C. Mayes
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
Sergio Kostek
Shu-Kong Chang
Gordon L. Mcdaniel
Thomas Plona
Curtis Randall
Jean-Pierre Masson
James C. Mayes
Kai Hsu
Schlumberger Technology Corporation
Schlumberger Canada Limited
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 Sergio Kostek, Shu-Kong Chang, Gordon L. Mcdaniel, Thomas Plona, Curtis Randall, Jean-Pierre Masson, James C. Mayes, Kai Hsu, Schlumberger Technology Corporation, Schlumberger Canada Limited filed Critical Sergio Kostek
Publication of CA2147456A1 publication Critical patent/CA2147456A1/en
Application granted granted Critical
Publication of CA2147456C publication Critical patent/CA2147456C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G01V1/40—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
    • G01V1/50—Analysing data
    • 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
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
    • G01V1/52—Structural details

Abstract

The present invention is directed to sonic logging while drilling. A
transmitter and at least one receiver are mounted on a drill collar far performing sonic investigations of the formation traversed by a borehole. It has been discovered that a drill collar has a natural stop band or notch where acoustic energy propagating in this frequency range is severely attenuated. Thus, to reduce drill collar acoustic coupling, the transmitter is operated within this natural stop band of the drill collar. An imperforate stop band filter is also included between the transmitter and receiver to enhance the natural stop band.
The transmitter is mounted transverse to the longitudinal axis of the drill collar, and is preferably mounted within means that reduce drill collar acoustic coupling. The transmitter preferably includes a material whose acoustic response is more favorable along its longitudinal axis relative to its radial axis, thereby directing the acoustic energy into the formation rather than the surrounding drill collar.
Received acoustic energy waveforms are electronically processed to reliably detect, in the presence of drilling noise, those acoustic signals which are produced by the transmitter and transmitted through the formation.
CA002147456A 1994-04-29 1995-04-20 Method of sonic logging while drilling a borehole traversing an earth formation Expired - Fee Related CA2147456C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/235,625 1994-04-29
US08/235,625 US5796677A (en) 1988-12-22 1994-04-29 Method of sonic logging while drilling a borehole traversing an earth formation

Publications (2)

Publication Number Publication Date
CA2147456A1 true CA2147456A1 (en) 1995-10-30
CA2147456C CA2147456C (en) 2006-06-06

Family

ID=22886301

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002147456A Expired - Fee Related CA2147456C (en) 1994-04-29 1995-04-20 Method of sonic logging while drilling a borehole traversing an earth formation

Country Status (5)

Country Link
US (1) US5796677A (en)
EP (1) EP0679910B1 (en)
CA (1) CA2147456C (en)
DE (1) DE69527393D1 (en)
NO (1) NO314860B1 (en)

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US9062535B2 (en) 2009-12-28 2015-06-23 Schlumberger Technology Corporation Wireless network discovery algorithm and system
DE102010001257A1 (en) * 2010-01-27 2011-07-28 Robert Bosch GmbH, 70469 Method and control device for determining a future speed
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AU2013403956A1 (en) * 2013-10-31 2016-03-10 Halliburton Energy Services, Inc. Acoustic signal attenuator for LWD/MWD logging systems
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WO2015142352A1 (en) * 2014-03-21 2015-09-24 Halliburton Energy Services, Inc. Electromagnetic formation evaluation tool apparatus and method
US10379246B2 (en) * 2015-05-22 2019-08-13 Halliburton Energy Services, Inc. Dynamic gain system with azimuthal averaging for downhole logging tools
US20180164460A1 (en) * 2016-12-13 2018-06-14 Pgs Geophysical As Dipole-Type Source for Generating Low Frequency Pressure Wave Fields
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US11512586B2 (en) 2020-10-06 2022-11-29 Halliburton Energy Services, Inc. Logging while drilling tool
CN112832753A (en) * 2021-01-26 2021-05-25 中国科学院声学研究所 While-drilling acoustic logging drill collar grooving method based on sound source excitation frequency

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Also Published As

Publication number Publication date
NO951636L (en) 1995-10-30
CA2147456C (en) 2006-06-06
DE69527393D1 (en) 2002-08-22
NO314860B1 (en) 2003-06-02
US5796677A (en) 1998-08-18
EP0679910A2 (en) 1995-11-02
EP0679910A3 (en) 1997-06-18
NO951636D0 (en) 1995-04-28
EP0679910B1 (en) 2002-07-17

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130422