(19)
(11) EP 1 625 420 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
29.05.2013 Bulletin 2013/22

(45) Mention of the grant of the patent:
17.04.2013 Bulletin 2013/16

(21) Application number: 04785564.8

(22) Date of filing: 14.05.2004
(51) International Patent Classification (IPC): 
G01V 1/00(2006.01)
(86) International application number:
PCT/US2004/015291
(87) International publication number:
WO 2004/104636 (02.12.2004 Gazette 2004/49)

(54)

METHOD FOR SIGNAL-TO-NOISE RATIO ENHANCEMENT OF SEISMIC DATA USING AMPLITUDE NOISE ATTENUATION

VERFAHREN ZUR VERBESSERUNG DES SIGNAL/RAUSCH VERHÄLTNISSES VON SEISMISCHEN DATEN MITTELS AMPLITUDENRAUSCHDÄMPFUNG

PROCEDE PERMETTANT D'AMELIORER LE RAPPORT SIGNAL/BRUIT DES DONNEES SISMIQUES PAR ATTENUATION DU BRUIT DE L'AMPLITUDE

(84) Designated Contracting States:
FR GB NL

(30) Priority: 20.05.2003 US 442394

(43) Date of publication of application:
15.02.2006 Bulletin 2006/07

(73) Proprietor: Chevron U.S.A. Inc.
San Ramon, California 94583-0947 (US)

(72) Inventors:
  • HERKENHOFF, E., Frederic
    Orinda, CA 94563 (US)
  • BONES, Dennis, G.
    Dublin, CA 94568 (US)
  • LOUIE, Kendall, Bong, Hu
    Orinda, CA 94563 (US)

(74) Representative: Nash, David Allan et al
Haseltine Lake LLP Redcliff Quay 120 Redcliff Street
Bristol BS1 6HU
Bristol BS1 6HU (GB)


(56) References cited: : 
US-A- 3 622 967
US-A- 4 561 075
US-A- 5 197 039
US-B1- 6 535 818
 US-A- 4 468 761
US-A- 4 740 929
US-B1- 6 519 533
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).