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(12) Patent: | (11) CA 2466416 |
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(54) English Title: | PROCEDE DE TRAITEMENT SISMIQUE, NOTAMMENT POUR LA COMPENSATION DE BIREFRINGENCE SUR DES TRACES SISMIQUES |
(54) French Title: | METHOD FOR SEISMIC PROCESSING, IN PARTICULAR FOR COMPENSATING BIREFRINGENCE ON SEISMIC TRACES |
Status: | Expired and beyond the Period of Reversal |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | CRAIG WILSON AND COMPANY |
(74) Associate agent: | |
(45) Issued: | 2013-07-09 |
(86) PCT Filing Date: | 2002-11-07 |
(87) Open to Public Inspection: | 2003-05-15 |
Examination requested: | 2007-10-31 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | French |
Patent Cooperation Treaty (PCT): | Yes |
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(86) PCT Filing Number: | PCT/FR2002/003821 |
(87) International Publication Number: | FR2002003821 |
(85) National Entry: | 2004-05-06 |
(30) Application Priority Data: | ||||||
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The invention concerns a method for seismic processing to obtain data of geophysical condition of an underground formation, comprising steps which consist in: a) acquiring in at least a point at the underground surface or in the underground formation seismic traces corresponding each time to two perpendicular components of a shear wave emitted in the underground formation and reflected by different interfaces thereof; b) applying to at least a temporal portion of said traces a succession of transforms (.perp.) which are inverse transforms of the transforms assumed to be those encountered by the wave when passing through a succession of the underground formation layers, said operation being repeated for different hypotheses of birefringence in said different layers; c) for each of those hypotheses, determining the value of a parameter representing coherence/similarity of two result traces obtained; d) selecting on the basis of the obtained values the one hypothesis which is considered to be the most representative of the underground, the two result traces obtained for said hypothesis being compensated traces of the underground formation birefringence.
L'invention concerne un procédé de traitement sismique en vue de l'obtention
d'informations sur la géophysique d'un sous-sol, comportant les étapes selon
lesquelles a) on acquiert en au moins un point à la surface du sous-sol ou
dans le sous-sol des traces sismiques correspondant à chaque fois à deux
composantes perpendiculaires d'une onde de cisaillement émise dans le sous-sol
et réfléchie par différentes interfaces de celui-ci, b) on applique à au moins
une portion temporelle de ces traces une succession de transformations
(.perp.) qui sont les transformations inverses de transformations supposées
être celles rencontrées par l'onde lors de sa traversée d'une succession de
couches du sous-sol, cette opération étant répétée pour différentes hypothèses
de biréfringence dans ces différentes couches, c) pour chacune de ces
hypothèses, on détermine la valeur d'un paramètre représentatif de la
cohérence/similarité des deux traces-résultats ainsi obtenues, d) on
sélectionne en fonction des valeurs ainsi obtenues celle de ces hypothèses que
l'on considère comme la plus représentative du sous-sol, les deux traces
résultats obtenues pour cette hypothèse étant des traces compensées de la
biréfringence du sous-sol.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
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Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.
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Description | Date |
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Time Limit for Reversal Expired | 2017-11-07 |
Letter Sent | 2016-11-07 |
Grant by Issuance | 2013-07-09 |
Inactive: Cover page published | 2013-07-08 |
Inactive: Final fee received | 2013-04-26 |
Pre-grant | 2013-04-26 |
Notice of Allowance is Issued | 2013-01-15 |
Letter Sent | 2013-01-15 |
4 | 2013-01-15 |
Notice of Allowance is Issued | 2013-01-15 |
Inactive: Approved for allowance (AFA) | 2012-12-18 |
Inactive: Correspondence - PCT | 2012-10-18 |
Revocation of Agent Requirements Determined Compliant | 2012-09-04 |
Inactive: Office letter | 2012-09-04 |
Inactive: Office letter | 2012-09-04 |
Appointment of Agent Requirements Determined Compliant | 2012-09-04 |
Appointment of Agent Request | 2012-08-16 |
Revocation of Agent Request | 2012-08-16 |
Amendment Received - Voluntary Amendment | 2012-06-26 |
Inactive: S.30(2) Rules - Examiner requisition | 2012-02-16 |
Amendment Received - Voluntary Amendment | 2009-07-22 |
Letter Sent | 2009-06-03 |
Letter Sent | 2009-06-03 |
Letter Sent | 2009-06-03 |
Letter Sent | 2007-12-06 |
All Requirements for Examination Determined Compliant | 2007-10-31 |
Request for Examination Requirements Determined Compliant | 2007-10-31 |
Request for Examination Received | 2007-10-31 |
Inactive: Delete abandonment | 2006-01-05 |
Inactive: Office letter | 2006-01-05 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2005-11-07 |
Letter Sent | 2005-05-30 |
Inactive: Single transfer | 2005-04-18 |
Inactive: Courtesy letter - Evidence | 2004-07-20 |
Inactive: Cover page published | 2004-07-15 |
Inactive: Notice - National entry - No RFE | 2004-07-13 |
Application Received - PCT | 2004-06-09 |
National Entry Requirements Determined Compliant | 2004-05-06 |
National Entry Requirements Determined Compliant | 2004-05-06 |
Application Published (Open to Public Inspection) | 2003-05-15 |
Abandonment Date | Reason | Reinstatement Date |
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2005-11-07 |
The last payment was received on 2012-10-26
Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following
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Fee Type | Anniversary Year | Due Date | Paid Date |
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Basic national fee - standard | 2004-05-06 | ||
MF (application, 2nd anniv.) - standard | 02 | 2004-11-08 | 2004-05-06 |
Registration of a document | 2005-04-18 | ||
MF (application, 3rd anniv.) - standard | 03 | 2005-11-07 | 2005-10-13 |
MF (application, 4th anniv.) - standard | 04 | 2006-11-07 | 2006-10-10 |
MF (application, 5th anniv.) - standard | 05 | 2007-11-07 | 2007-10-23 |
Request for examination - standard | 2007-10-31 | ||
MF (application, 6th anniv.) - standard | 06 | 2008-11-07 | 2008-10-08 |
Registration of a document | 2009-03-23 | ||
MF (application, 7th anniv.) - standard | 07 | 2009-11-09 | 2009-10-14 |
MF (application, 8th anniv.) - standard | 08 | 2010-11-08 | 2010-10-12 |
MF (application, 9th anniv.) - standard | 09 | 2011-11-07 | 2011-10-11 |
MF (application, 10th anniv.) - standard | 10 | 2012-11-07 | 2012-10-26 |
Final fee - standard | 2013-04-26 | ||
MF (patent, 11th anniv.) - standard | 2013-11-07 | 2013-10-16 | |
MF (patent, 12th anniv.) - standard | 2014-11-07 | 2014-10-20 | |
MF (patent, 13th anniv.) - standard | 2015-11-09 | 2015-10-26 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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CGGVERITAS SERVICES SA |
Past Owners on Record |
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ROBERT GAROTTA |