CA2371464A1 - Acoustic isolator for downhole applications - Google Patents

Acoustic isolator for downhole applications Download PDF

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Publication number
CA2371464A1
CA2371464A1 CA002371464A CA2371464A CA2371464A1 CA 2371464 A1 CA2371464 A1 CA 2371464A1 CA 002371464 A CA002371464 A CA 002371464A CA 2371464 A CA2371464 A CA 2371464A CA 2371464 A1 CA2371464 A1 CA 2371464A1
Authority
CA
Canada
Prior art keywords
irregularities
collar
mass
mass irregularities
pipe
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
CA002371464A
Other languages
French (fr)
Other versions
CA2371464C (en
Inventor
Sergey Egerev
Vladimir Belov
Vladimir Dubinsky
Alexei Bolshakov
Victor Tiutekin
Victor Yushin
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
Individual
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 Individual filed Critical Individual
Priority to CA002453891A priority Critical patent/CA2453891A1/en
Publication of CA2371464A1 publication Critical patent/CA2371464A1/en
Application granted granted Critical
Publication of CA2371464C publication Critical patent/CA2371464C/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
    • G01V1/52—Structural details
    • G01V1/523—Damping devices

Abstract

A plurality of heavy mass irregularities (54, 56, 58) attached to an inner wall (60) of the drill collar (52) attenuate waves traveling through the collar. The plurality of heavy mass irregularities (54, 56, 58) are spaced and sized for the maximum attenuation of acoustic pulses in a predetermined frequency range. The mass irregularities may be rings secured to the inner surface (60) of the collar by neck pieces (62), extending outwardly from the outer circumference of the ring. The mass irregularities may be made of steel or tungsten and are between six and ten in number. The spacing of the irregularities may lie between twelve and fourteen centimeters. A center pipe (64) may be included to isolate the irregularities from the fluid flow associated with the drilling operation. The pipe may be of a soft material such as rubber to reduce transfer of acoustic noise along the drill string.
CA002371464A 1999-06-03 2000-06-01 Acoustic isolator for downhole applications Expired - Fee Related CA2371464C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002453891A CA2453891A1 (en) 1999-06-03 2000-06-01 Acoustic isolator for downhole applications

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US13738899P 1999-06-03 1999-06-03
US60/137,388 1999-06-03
PCT/US2000/015230 WO2000075694A1 (en) 1999-06-03 2000-06-01 Acoustic isolator for downhole applications

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002453891A Division CA2453891A1 (en) 1999-06-03 2000-06-01 Acoustic isolator for downhole applications

Publications (2)

Publication Number Publication Date
CA2371464A1 true CA2371464A1 (en) 2000-12-14
CA2371464C CA2371464C (en) 2005-05-24

Family

ID=22477202

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002371464A Expired - Fee Related CA2371464C (en) 1999-06-03 2000-06-01 Acoustic isolator for downhole applications

Country Status (6)

Country Link
US (3) US6615949B1 (en)
AU (2) AU776561B2 (en)
CA (1) CA2371464C (en)
GB (1) GB2366351B (en)
NO (1) NO334711B1 (en)
WO (1) WO2000075694A1 (en)

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US8436618B2 (en) * 2007-02-19 2013-05-07 Schlumberger Technology Corporation Magnetic field deflector in an induction resistivity tool
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US8299795B2 (en) * 2007-02-19 2012-10-30 Schlumberger Technology Corporation Independently excitable resistivity units
US8395388B2 (en) * 2007-02-19 2013-03-12 Schlumberger Technology Corporation Circumferentially spaced magnetic field generating devices
US20090230969A1 (en) * 2007-02-19 2009-09-17 Hall David R Downhole Acoustic Receiver with Canceling Element
US7970544B2 (en) * 2007-06-26 2011-06-28 Baker Hughes Incorporated Method and apparatus for characterizing and estimating permeability using LWD Stoneley-wave data
US20090000859A1 (en) * 2007-06-28 2009-01-01 Baker Hughes Incorporated Method and Apparatus for Phased Array Acoustic Well Logging
US20090107757A1 (en) * 2007-10-24 2009-04-30 Baker Hughes Incorporated Acoustic Isolator
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US8117907B2 (en) * 2008-12-19 2012-02-21 Pathfinder Energy Services, Inc. Caliper logging using circumferentially spaced and/or angled transducer elements
US9121966B2 (en) 2011-11-28 2015-09-01 Baker Hughes Incorporated Media displacement device and method of improving transfer of electromagnetic energy between a tool and an earth formation
WO2014084868A1 (en) * 2012-12-01 2014-06-05 Halliburton Energy Services, Inc. Protection of electronic devices used with perforating guns
US9557435B2 (en) * 2012-12-20 2017-01-31 Schlumberger Technology Corporation Acoustic isolators
US9217808B2 (en) 2013-11-07 2015-12-22 Schlumberger Technology Corporation Wellbore signal monitor with tangential seismic sensors for tube-wave noise reduction
WO2015099800A1 (en) 2013-12-28 2015-07-02 Halliburton Energy Services, Inc. Amplification of data-encoded sound waves within a resonant area
CA2984784C (en) 2015-04-29 2023-08-29 Conocophillips Company Downhole inertial mass system
MX2017016618A (en) 2015-07-31 2018-05-15 Halliburton Energy Services Inc Acoustic device for reducing cable wave induced seismic noises.
RU2604561C1 (en) * 2015-08-27 2016-12-10 Общество с Ограниченной Ответственностью "ТНГ-Групп" Insulator for acoustic logging instrument during drilling
US11762117B2 (en) * 2018-11-19 2023-09-19 ExxonMobil Technology and Engineering Company Downhole tools and methods for detecting a downhole obstruction within a wellbore
US11513249B2 (en) 2019-10-11 2022-11-29 Scientific Drilling International, Inc. Downhole acoustic device
US11662495B2 (en) * 2019-10-29 2023-05-30 Halliburton Energy Services, Inc. Sonic through tubing cement evaluation
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WO2023003964A1 (en) * 2021-07-20 2023-01-26 Baker Hughes Oilfield Operations Llc System and method for acoustic isolators
US11840924B2 (en) 2021-11-24 2023-12-12 Halliburton Energy Services, Inc. Short and wideband isolator for acoustic tools

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US6915875B2 (en) * 1999-06-03 2005-07-12 Baker Hughes Incorporated Acoustic isolator for downhole applications
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Also Published As

Publication number Publication date
NO334711B1 (en) 2014-05-12
US7032707B2 (en) 2006-04-25
AU776561B2 (en) 2004-09-16
AU2004208724A1 (en) 2004-11-04
US20040104068A1 (en) 2004-06-03
WO2000075694A1 (en) 2000-12-14
GB0129148D0 (en) 2002-01-23
NO20015852L (en) 2002-02-01
GB2366351B (en) 2003-05-28
CA2371464C (en) 2005-05-24
AU5178300A (en) 2000-12-28
US20060260864A1 (en) 2006-11-23
US6615949B1 (en) 2003-09-09
AU2004208724B2 (en) 2008-03-06
WO2000075694B1 (en) 2001-02-08
GB2366351A (en) 2002-03-06
NO20015852D0 (en) 2001-11-30

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