CA2315438C - Systeme de detection acoustique pour utilisation en foration descendante sismique au moyen d'une gamme de detecteurs a fibres optiques - Google Patents

Systeme de detection acoustique pour utilisation en foration descendante sismique au moyen d'une gamme de detecteurs a fibres optiques Download PDF

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Publication number
CA2315438C
CA2315438C CA 2315438 CA2315438A CA2315438C CA 2315438 C CA2315438 C CA 2315438C CA 2315438 CA2315438 CA 2315438 CA 2315438 A CA2315438 A CA 2315438A CA 2315438 C CA2315438 C CA 2315438C
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CA
Canada
Prior art keywords
function
frequencies
delta
acoustic
frequency
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.)
Expired - Lifetime
Application number
CA 2315438
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English (en)
Other versions
CA2315438A1 (fr
Inventor
Craig W. Hodgson
Donald A. Frederick
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.)
Northrop Grumman Guidance and Electronics Co Inc
Original Assignee
Litton Systems 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
Priority claimed from US09/429,048 external-priority patent/US6728165B1/en
Priority claimed from US09/430,058 external-priority patent/US6269198B1/en
Application filed by Litton Systems Inc filed Critical Litton Systems Inc
Publication of CA2315438A1 publication Critical patent/CA2315438A1/fr
Application granted granted Critical
Publication of CA2315438C publication Critical patent/CA2315438C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
CA 2315438 1999-10-29 2000-07-27 Systeme de detection acoustique pour utilisation en foration descendante sismique au moyen d'une gamme de detecteurs a fibres optiques Expired - Lifetime CA2315438C (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/429,048 US6728165B1 (en) 1999-10-29 1999-10-29 Acoustic sensing system for downhole seismic applications utilizing an array of fiber optic sensors
US09/430,058 US6269198B1 (en) 1999-10-29 1999-10-29 Acoustic sensing system for downhole seismic applications utilizing an array of fiber optic sensors
US09/429,048 1999-10-29
US09/430,058 1999-10-29

Publications (2)

Publication Number Publication Date
CA2315438A1 CA2315438A1 (fr) 2001-04-29
CA2315438C true CA2315438C (fr) 2009-11-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2315438 Expired - Lifetime CA2315438C (fr) 1999-10-29 2000-07-27 Systeme de detection acoustique pour utilisation en foration descendante sismique au moyen d'une gamme de detecteurs a fibres optiques

Country Status (2)

Country Link
CA (1) CA2315438C (fr)
NO (1) NO333489B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114324345B (zh) * 2021-11-01 2024-01-12 清华大学深圳国际研究生院 一种材料成像方法、装置、终端设备及存储介质

Also Published As

Publication number Publication date
CA2315438A1 (fr) 2001-04-29
NO333489B1 (no) 2013-06-24
NO20005441L (no) 2001-04-30
NO20005441D0 (no) 2000-10-27

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