GB2012422A - Apparatus and Method for Determining Velocity of Acoustic Waves in Earth Formations - Google Patents

Apparatus and Method for Determining Velocity of Acoustic Waves in Earth Formations

Info

Publication number
GB2012422A
GB2012422A GB79954A GB7900954A GB2012422A GB 2012422 A GB2012422 A GB 2012422A GB 79954 A GB79954 A GB 79954A GB 7900954 A GB7900954 A GB 7900954A GB 2012422 A GB2012422 A GB 2012422A
Authority
GB
United Kingdom
Prior art keywords
velocity
receivers
correlation
signals
provisional
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
GB79954A
Other versions
GB2012422B (en
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 NV
Original Assignee
Schlumberger NV
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 NV filed Critical Schlumberger NV
Publication of GB2012422A publication Critical patent/GB2012422A/en
Application granted granted Critical
Publication of GB2012422B publication Critical patent/GB2012422B/en
Expired 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

Abstract

To determine the velocity of acoustic wave energy propagating in formations surrounding a borehole (14), a transmitter (16) periodically transmits acoustic wave energy into the surrounding formations. This energy is received at a plurality of spaced receivers (18.1-18.4). A first portion of the signal from the receiver 18.1 is then correlated with respective first portions of the signals from the other receivers (18.2-18.4) the time reference for the correlation of each of the first portions of the signals from the other receivers (18.2-18.4) being selected, relative to the time reference of the signal from the receiver 18.1, in accordance with the spacing of the receivers (18.1-18.4) and a first estimated velocity. The correlation is repeated for four more estimated velocities, and a velocity value which yields the best correlation is selected by interpolation as a first provisional velocity. The correlation for several assumed velocities and interpolation is then performed on second portions of the signals from the receivers (18.1-18.4) to obtain a second provisional velocity. An output velocity is then determined as a function of the first and second (and possibly other similarly-generated) provisional velocities. The velocity of the compressional component and/or the shear component of the acoustic wave energy can be obtained. <IMAGE>
GB79954A 1978-01-13 1979-01-10 Apparatus and method for determining velocity of acoustic waves in earth formations Expired GB2012422B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86919378A 1978-01-13 1978-01-13

Publications (2)

Publication Number Publication Date
GB2012422A true GB2012422A (en) 1979-07-25
GB2012422B GB2012422B (en) 1982-08-18

Family

ID=25353097

Family Applications (1)

Application Number Title Priority Date Filing Date
GB79954A Expired GB2012422B (en) 1978-01-13 1979-01-10 Apparatus and method for determining velocity of acoustic waves in earth formations

Country Status (11)

Country Link
BR (1) BR7900220A (en)
CA (1) CA1153815A (en)
EG (1) EG13567A (en)
FR (1) FR2414734A1 (en)
GB (1) GB2012422B (en)
IE (1) IE48252B1 (en)
IT (1) IT1110386B (en)
MY (1) MY8500188A (en)
NO (1) NO153622C (en)
OA (1) OA06148A (en)
TR (1) TR20740A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497580A1 (en) * 1981-01-02 1982-07-09 Mobil Oil Corp METHOD FOR DETERMINING THE PERMEABILITY OF A TRAINING
GB2235534A (en) * 1989-09-01 1991-03-06 Amoco Corp Estimating velocities of seismic waves
GB2275337A (en) * 1993-02-17 1994-08-24 Csm Associates Limited Seismic detector
GB2300708A (en) * 1995-05-10 1996-11-13 Western Atlas Int Inc Acoustic array logging
CN1045343C (en) * 1993-06-18 1999-09-29 株式会社金星社 Chaos processor
CN1046362C (en) * 1993-06-19 1999-11-10 株式会社金星社 Chaos feedback system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000456A1 (en) * 1979-07-30 1981-02-19 Dorian Ind Pty Ltd Method and device for measuring distances
FR2469720B1 (en) * 1979-11-08 1987-01-09 Gaudiani Pierre SYSTEM IMPROVING ACOUSTIC MEASUREMENT METHODS
CN104594878B (en) * 2014-11-20 2017-05-10 中国石油大学(华东) Double-source flyback through-casing acoustic logging method and device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3177467A (en) * 1961-02-08 1965-04-06 Dresser Ind Acoustic velocity logging system and computer
US3696331A (en) * 1970-07-22 1972-10-03 Mobil Oil Corp Automated process for determining subsurface velocities from seismograms

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497580A1 (en) * 1981-01-02 1982-07-09 Mobil Oil Corp METHOD FOR DETERMINING THE PERMEABILITY OF A TRAINING
GB2235534A (en) * 1989-09-01 1991-03-06 Amoco Corp Estimating velocities of seismic waves
GB2235534B (en) * 1989-09-01 1993-10-20 Amoco Corp Method for determining seismic velocities
GB2275337A (en) * 1993-02-17 1994-08-24 Csm Associates Limited Seismic detector
CN1045343C (en) * 1993-06-18 1999-09-29 株式会社金星社 Chaos processor
CN1046362C (en) * 1993-06-19 1999-11-10 株式会社金星社 Chaos feedback system
GB2300708A (en) * 1995-05-10 1996-11-13 Western Atlas Int Inc Acoustic array logging
GB2300708B (en) * 1995-05-10 1999-04-07 Western Atlas Int Inc Acoustic array logging

Also Published As

Publication number Publication date
FR2414734B1 (en) 1984-08-03
OA06148A (en) 1981-06-30
CA1153815A (en) 1983-09-13
IE48252B1 (en) 1984-11-14
NO790007L (en) 1979-07-16
TR20740A (en) 1982-06-24
FR2414734A1 (en) 1979-08-10
GB2012422B (en) 1982-08-18
EG13567A (en) 1982-03-31
IE782574L (en) 1979-07-13
BR7900220A (en) 1979-08-14
MY8500188A (en) 1985-12-31
NO153622B (en) 1986-01-13
IT7919192A0 (en) 1979-01-10
IT1110386B (en) 1985-12-23
NO153622C (en) 1986-05-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee