(19)
(11) EP 2 605 046 A8

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

(15) Correction information:
Corrected version no 1 (W1 A3)

(48) Corrigendum issued on:
12.02.2014 Bulletin 2014/07

(88) Date of publication A3:
14.08.2013 Bulletin 2013/33

(43) Date of publication:
19.06.2013 Bulletin 2013/25

(21) Application number: 12197282.2

(22) Date of filing: 14.12.2012
(51) International Patent Classification (IPC): 
G01V 1/28(2006.01)
 G01V 1/36(2006.01)
(84) Designated Contracting States:
AL 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 RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 15.12.2011 US 201161576019 P

(71) Applicant: CGGVeritas Services SA
91300 Massy (FR)

(72) Inventors:
  • Rebel, Estelle
    91300 MASSY (FR)
  • Meunier, Julien
    91300 MASSY (FR)

(74) Representative: Regimbeau 
20, rue de Chazelles
75847 Paris Cedex 17
75847 Paris Cedex 17 (FR)

   


(54) Device and method for locating microseismic events using array of receivers


(57) Device and method for locating a microseismic event taking place in a subsurface of the earth. The method includes receiving recorded seismic data S(t, Rc) acquired by a plurality of receivers as function of time t and position Rc; receiving a reference signal model SiMo(t, Rc) corresponding to seismic data recorded by the plurality of receivers if an explosion occurs at an injection point in the subsurface; time correlating recorded seismic data S(t, Rc) with signal model SiMo(t, Rc) to determine correlated seismic data DMSS; calculating a detection curve for each of plural cells in a given volume in the subsurface of the earth based on correlated seismic data DMSS; and determining a seismic location in the volume of the microseismic event based on a largest value of maximums of the detection curves calculated for various points of the given volume in the subsurface.