(19)
(11) EP 2 308 025 A2

(12)

(88) Date of publication A3:
25.03.2010

(43) Date of publication:
13.04.2011 Bulletin 2011/15

(21) Application number: 09803352.5

(22) Date of filing: 10.07.2009
(51) International Patent Classification (IPC): 
G06Q 50/00(2006.01)
(86) International application number:
PCT/US2009/050220
(87) International publication number:
WO 2010/014379 (04.02.2010 Gazette 2010/05)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated Extension States:
AL BA RS

(30) Priority: 30.07.2008 US 84672 P

(71) Applicant: Chevron U.S.A., Inc.
San Ramon, CA 94583 (US)

(72) Inventors:
  • LIU, Wei
    San Ramon CA 94582 (US)
  • BUBE, Kenneth, Paul
    Seattle WA 98125 (US)

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

   


(54) METHOD FOR PROPAGATING PSEUDO ACOUSTIC QUASI-P WAVES IN ANISOTROPIC MEDIA